diff --git a/src/configs/defaults.ini b/src/configs/defaults.ini
index bdc657ee8..742c9c576 100644
--- a/src/configs/defaults.ini
+++ b/src/configs/defaults.ini
@@ -3,6 +3,9 @@ theme=beisel
 lastCodeVersion=0.0.0
 currentCodeVersion=1.3.1
 
+[site]
+mode=dev
+
 [epi]
 cache=EpiCache_File
 session=EpiSession_Php
diff --git a/src/html/assets/themes/beisel/templates/template.php b/src/html/assets/themes/beisel/templates/template.php
index 7add5598f..1ad5c0962 100644
--- a/src/html/assets/themes/beisel/templates/template.php
+++ b/src/html/assets/themes/beisel/templates/template.php
@@ -11,9 +11,11 @@
     <meta name="viewport" content="width=device-width, initial-scale=1.0">
     <link rel="shortcut icon" href="<?php getTheme()->asset('image', 'favicon.png'); ?>">
     <link rel="apple-touch-icon" href="<?php getTheme()->asset('image', 'apple-touch-icon.png'); ?>">
-    <link rel="stylesheet" href="<?php getTheme()->asset('stylesheet', 'bootstrap.min.css'); ?>">
-    <link rel="stylesheet" href="<?php getTheme()->asset('stylesheet', 'main.css'); ?>">
-    <link rel="stylesheet" href="/assets/stylesheets/upload.css">
+    <link rel="stylesheet" href="<?php echo getAssetPipeline(true)->addCss(getTheme()->asset('stylesheet', 'bootstrap.min.css', false))->
+                                                               addCss(getTheme()->asset('stylesheet', 'main.css', false))->
+                                                               addCss("/assets/stylesheets/upload.css")->
+                                                               getUrl(AssetPipeline::css, 'a'); ?>">
+
     <?php getPlugin()->invoke('onHead', array('page' => $page)); ?>
 </head>
 
@@ -47,8 +49,8 @@
     
   </div>
   <div id="modal" class="modal hide fade"></div>
-  <script type="text/javascript" src="<?php getTheme()->asset(getConfig()->get('dependencies')->javascript); ?>"></script>
-  <script type="text/javascript" src="<?php getTheme()->asset('util'); ?>"></script>
+  <script type="text/javascript" src="<?php echo getAssetPipeline(true)->addJs(getTheme()->asset(getConfig()->get('dependencies')->javascript, null, false))->
+                                                                    addJs(getTheme()->asset('util', null, false))->getUrl(AssetPipeline::js, 'a'); ?>"></script>
   <script>
     OP.Util.init(jQuery, {
       eventMap: {
@@ -94,17 +96,17 @@
       js: {
         assets: [
           <?php if(isset($_GET['__route__']) && stristr($_GET['__route__'], 'upload')) { ?> 
-            <?php if(isset($_GET['debug'])) { ?>
+            <?php if(getConfig()->get('site')->mode === 'dev') { ?>
               '<?php getTheme()->asset('javascript', 'plupload.js'); ?>',
               '<?php getTheme()->asset('javascript', 'plupload.html5.js'); ?>',
               '<?php getTheme()->asset('javascript', 'jquery.plupload.queue.js'); ?>',
               '/assets/javascripts/openphoto-upload.js',
             <?php } else { ?>
-              '/assets/javascripts/openphoto-upload.min.js',
+              '<?php echo getAssetPipeline(true)->addJs('/assets/javascripts/openphoto-upload.min.js')->getUrl(AssetPipeline::js, 'a'); ?>',
             <?php } ?>
           <?php } ?>
 
-          <?php if(isset($_GET['debug'])) { ?>
+            <?php if(getConfig()->get('site')->mode === 'dev') { ?>
             '/assets/javascripts/openphoto-batch.js',
             '<?php getTheme()->asset('javascript', 'jquery.scrollTo-1.4.2-min.js'); ?>',
             '<?php getTheme()->asset('javascript', 'jquery.flexslider-min.js'); ?>',
@@ -112,8 +114,9 @@
             '<?php getTheme()->asset('javascript', 'bootstrap-modal.js'); ?>',
             '<?php getTheme()->asset('javascript', 'openphoto-theme.js'); ?>'
           <?php } else { ?>
-            '/assets/javascripts/openphoto-batch.min.js',
-            '<?php getTheme()->asset('javascript', 'openphoto-theme-full-min.js'); ?>'
+            '<?php echo getAssetPipeline(true)->addJs('/assets/javascripts/openphoto-batch.min.js')->
+                                                addJs(getTheme()->asset('javascript', 'openphoto-theme-full-min.js', false))->
+                                                getUrl(AssetPipeline::js, 'a'); ?>'
           <?php } ?>
         ],
         onComplete: function(){ 
diff --git a/src/libraries/controllers/AssetsController.php b/src/libraries/controllers/AssetsController.php
new file mode 100644
index 000000000..917f2b5ce
--- /dev/null
+++ b/src/libraries/controllers/AssetsController.php
@@ -0,0 +1,32 @@
+<?php
+/**
+  * Tag controller for API endpoints
+  *
+  * This controller does much of the dispatching to the Tag controller for all tag requests.
+  * @author Jaisen Mathai <jaisen@jmathai.com>
+  */
+class AssetsController extends BaseController
+{
+  public static function get($type, $compression, $files)
+  {
+    $files = (array)explode(',', $files);
+    $pipeline = getAssetPipeline();
+    foreach($files as $file)
+    {
+      if($type === 'css')
+        $pipeline->addCss($file);
+      elseif($type === 'js')
+        $pipeline->addJs($file);
+    }
+
+    if($type === 'css')
+      header('Content-type: text/css');
+    elseif($type === 'js')
+      header('Content-type: text/javascript');
+
+    if($compression === 'm')
+      echo $pipeline->getMinified('css');
+    elseif($compression === 'c')
+      echo $pipeline->getCombined('css');
+  }
+}
diff --git a/src/libraries/dependencies.php b/src/libraries/dependencies.php
index f41573cc4..410f11d72 100644
--- a/src/libraries/dependencies.php
+++ b/src/libraries/dependencies.php
@@ -6,6 +6,7 @@
 require getConfig()->get('paths')->controllers . '/BaseController.php';
 require getConfig()->get('paths')->controllers . '/ApiController.php';
 require getConfig()->get('paths')->controllers . '/GeneralController.php';
+require getConfig()->get('paths')->controllers . '/AssetsController.php';
 require getConfig()->get('paths')->controllers . '/ApiActionController.php';
 require getConfig()->get('paths')->controllers . '/ActionController.php';
 require getConfig()->get('paths')->controllers . '/ApiGroupController.php';
@@ -28,6 +29,8 @@
 require getConfig()->get('paths')->external . '/aws/sdk.class.php';
 require getConfig()->get('paths')->external . '/Dropbox/autoload.php';
 require getConfig()->get('paths')->external . '/Mobile_Detect/Mobile_Detect.php';
+require getConfig()->get('paths')->external . '/JSMin/JSMin.php';
+require getConfig()->get('paths')->external . '/CssMin/CssMin.php';
 require getConfig()->get('paths')->libraries . '/functions.php';
 
 // adapters
@@ -45,6 +48,7 @@
 require getConfig()->get('paths')->adapters . '/LoginFacebook.php';
 
 // models
+require getConfig()->get('paths')->models . '/AssetPipeline.php';
 require getConfig()->get('paths')->models . '/Utility.php';
 require getConfig()->get('paths')->models . '/Url.php';
 require getConfig()->get('paths')->models . '/Authentication.php';
diff --git a/src/libraries/external/CssMin/CssMin.php b/src/libraries/external/CssMin/CssMin.php
new file mode 100644
index 000000000..c90cb751a
--- /dev/null
+++ b/src/libraries/external/CssMin/CssMin.php
@@ -0,0 +1,1745 @@
+<?php
+/**
+ * CssMin - A (simple) css minifier with benefits
+ * 
+ * --
+ * 
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING 
+ * BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, 
+ * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ * --
+ *
+ * @package		CssMin
+ * @link		http://code.google.com/p/cssmin/
+ * @author		Joe Scylla <joe.scylla@gmail.com>
+ * @copyright	2008 - 2011 Joe Scylla <joe.scylla@gmail.com>
+ * @license		http://opensource.org/licenses/mit-license.php MIT License
+ * @version		2.0.2.2 (2011-03-28)
+ */
+class CssMin
+	{
+	/**
+	 * Null-Token.
+	 * 
+	 * @var integer
+	 */
+	const T_NULL = 0;
+	/**
+	 * State: Is in document
+	 * 
+	 * @var integer
+	 */
+	const T_DOCUMENT = 1;
+	/**
+	 * Token: Comment
+	 * 
+	 * @var integer
+	 */
+	const T_COMMENT = 2;
+	/**
+	 * Token: Generic at-rule
+	 * 
+	 * @var integer
+	 */
+	const T_AT_RULE = 3;
+	/**
+	 * Token: Generic at-rule
+	 * 
+	 * @var integer
+	 */
+	const T_AT_IMPORT = 22;
+	/**
+	 * Token: Start of @media block
+	 * 
+	 * @var integer
+	 */
+	const T_AT_MEDIA_START = 4;
+	/**
+	 * State: Is in @media block
+	 * 
+	 * @var integer
+	 */
+	const T_AT_MEDIA = 5;
+	/**
+	 * Token: End of @media block
+	 * 
+	 * @var integer
+	 */
+	const T_AT_MEDIA_END = 6;
+	/**
+	 * Token: Start of @font-face block
+	 * 
+	 * @var integer
+	 */
+	const T_AT_FONT_FACE_START = 7;
+	/**
+	 * State: Is in @font-face block
+	 * 
+	 * @var integer
+	 */
+	const T_AT_FONT_FACE = 8;
+	/**
+	 * Token: @font-face declaration
+	 * 
+	 * @var integer
+	 */
+	const T_FONT_FACE_DECLARATION = 9;
+	/**
+	 * Token: End of @font-face block
+	 * 
+	 * @var integer
+	 */
+	const T_AT_FONT_FACE_END = 10;
+	/**
+	 * Token: Start of @page block
+	 * 
+	 * @var integer
+	 */
+	const T_AT_PAGE_START = 11;
+	/**
+	 * State: Is in @page block
+	 * 
+	 * @var integer
+	 */
+	const T_AT_PAGE = 12;
+	/**
+	 * Token: @page declaration
+	 * 
+	 * @var integer
+	 */
+	const T_PAGE_DECLARATION = 13;
+	/**
+	 * Token: End of @page block
+	 * 
+	 * @var integer
+	 */
+	const T_AT_PAGE_END = 14;
+	/**
+	 * Token: Start of ruleset
+	 * 
+	 * @var integer
+	 */
+	const T_RULESET_START = 15;
+	/**
+	 * Token: Ruleset selectors
+	 * 
+	 * @var integer
+	 */
+	const T_SELECTORS = 16;
+	/**
+	 * Token: Start of declarations
+	 * 
+	 * @var integer
+	 */
+	const T_DECLARATIONS_START = 17;
+	/**
+	 * State: Is in declarations
+	 * 
+	 * @var integer
+	 */
+	const T_DECLARATIONS = 18;
+	/**
+	 * Token: Declaration
+	 * 
+	 * @var integer
+	 */
+	const T_DECLARATION = 19;
+	/**
+	 * Token: End of declarations
+	 * 
+	 * @var integer
+	 */
+	const T_DECLARATIONS_END = 20;
+	/**
+	 * Token: End of ruleset
+	 * 
+	 * @var integer
+	 */
+	const T_RULESET_END = 21;
+	/**
+	 * Token: Start of @variables block
+	 * 
+	 * @var integer
+	 */
+	const T_AT_VARIABLES_START = 100;
+	/**
+	 * State: Is in @variables block
+	 * 
+	 * @var integer
+	 */
+	const T_AT_VARIABLES = 101;
+	/**
+	 * Token: @variables declaration
+	 * 
+	 * @var integer
+	 */
+	const T_VARIABLE_DECLARATION = 102;
+	/**
+	 * Token: End of @variables block
+	 * 
+	 * @var integer
+	 */
+	const T_AT_VARIABLES_END = 103;
+	/**
+	 * State: Is in string
+	 * 
+	 * @var integer
+	 */
+	const T_STRING = 253;
+	/**
+	 * State: Is in url string property
+	 * 
+	 * @var integer
+	 */
+	const T_STRING_URL = 254;
+	/**
+	 * State: Is in expression string property
+	 * 
+	 * @var integer
+	 */
+	const T_STRING_EXPRESSION = 255;
+	/**
+	 * Default configuration.
+	 * 
+	 * @var array
+	 */
+	private static $defaultConfiguration = array
+		(
+		"remove-empty-blocks"			=> true,
+		"remove-empty-rulesets"			=> true,
+		"remove-last-semicolons"		=> true,
+		"remove-comments"				=> true,
+		"convert-css3-properties"		=> false,
+		"convert-font-weight-values"	=> false,
+		"convert-named-color-values"	=> false,
+		"convert-hsl-color-values"		=> false,
+		"convert-rgb-color-values"		=> false,
+		"compress-color-values"			=> false,
+		"compress-unit-values"			=> false,
+		"emulate-css3-variables"		=> true,
+		"import-imports"				=> false,
+		"import-base-path"				=> null,
+		"import-remove-invalid"			=> false
+		);
+	/**
+	 * Css color transformations table. Used to convert named colors to hexadecimal notation.
+	 * 
+	 * @var array
+	 */
+	private static $colorTransformations = array
+		(
+		"aliceblue"						=> "#f0f8ff",
+		"antiquewhite"					=> "#faebd7",
+		"aqua"							=> "#0ff",
+		"aquamarine"					=> "#7fffd4",
+		"azure"							=> "#f0ffff",
+		"beige"							=> "#f5f5dc",
+		"black"							=> "#000",
+		"blue"							=> "#00f",
+		"blueviolet"					=> "#8a2be2",
+		"brown"							=> "#a52a2a",
+		"burlywood"						=> "#deb887",
+		"cadetblue"						=> "#5f9ea0",
+		"chartreuse"					=> "#7fff00",
+		"chocolate"						=> "#d2691e",
+		"coral"							=> "#ff7f50",
+		"cornflowerblue"				=> "#6495ed",
+		"cornsilk"						=> "#fff8dc",
+		"crimson"						=> "#dc143c",
+		"darkblue"						=> "#00008b",
+		"darkcyan"						=> "#008b8b",
+		"darkgoldenrod"					=> "#b8860b",
+		"darkgray"						=> "#a9a9a9",
+		"darkgreen"						=> "#006400",
+		"darkkhaki"						=> "#bdb76b",
+		"darkmagenta"					=> "#8b008b",
+		"darkolivegreen"				=> "#556b2f",
+		"darkorange"					=> "#ff8c00",
+		"darkorchid"					=> "#9932cc",
+		"darkred"						=> "#8b0000",
+		"darksalmon"					=> "#e9967a",
+		"darkseagreen"					=> "#8fbc8f",
+		"darkslateblue"					=> "#483d8b",
+		"darkslategray"					=> "#2f4f4f",
+		"darkturquoise"					=> "#00ced1",
+		"darkviolet"					=> "#9400d3",
+		"deeppink"						=> "#ff1493",
+		"deepskyblue"					=> "#00bfff",
+		"dimgray"						=> "#696969",
+		"dodgerblue"					=> "#1e90ff",
+		"firebrick"						=> "#b22222",
+		"floralwhite"					=> "#fffaf0",
+		"forestgreen"					=> "#228b22",
+		"fuchsia"						=> "#f0f",
+		"gainsboro"						=> "#dcdcdc",
+		"ghostwhite"					=> "#f8f8ff",
+		"gold"							=> "#ffd700",
+		"goldenrod"						=> "#daa520",
+		"gray"							=> "#808080",
+		"green"							=> "#008000",
+		"greenyellow"					=> "#adff2f",
+		"honeydew"						=> "#f0fff0",
+		"hotpink"						=> "#ff69b4",
+		"indianred"						=> "#cd5c5c",
+		"indigo"						=> "#4b0082",
+		"ivory"							=> "#fffff0",
+		"khaki"							=> "#f0e68c",
+		"lavender"						=> "#e6e6fa",
+		"lavenderblush"					=> "#fff0f5",
+		"lawngreen"						=> "#7cfc00",
+		"lemonchiffon"					=> "#fffacd",
+		"lightblue"						=> "#add8e6",
+		"lightcoral"					=> "#f08080",
+		"lightcyan"						=> "#e0ffff",
+		"lightgoldenrodyellow"			=> "#fafad2",
+		"lightgreen"					=> "#90ee90",
+		"lightgrey"						=> "#d3d3d3",
+		"lightpink"						=> "#ffb6c1",
+		"lightsalmon"					=> "#ffa07a",
+		"lightseagreen"					=> "#20b2aa",
+		"lightskyblue"					=> "#87cefa",
+		"lightslategray"				=> "#789",
+		"lightsteelblue"				=> "#b0c4de",
+		"lightyellow"					=> "#ffffe0",
+		"lime"							=> "#0f0",
+		"limegreen"						=> "#32cd32",
+		"linen"							=> "#faf0e6",
+		"maroon"						=> "#800000",
+		"mediumaquamarine"				=> "#66cdaa",
+		"mediumblue"					=> "#0000cd",
+		"mediumorchid"					=> "#ba55d3",
+		"mediumpurple"					=> "#9370db",
+		"mediumseagreen"				=> "#3cb371",
+		"mediumslateblue"				=> "#7b68ee",
+		"mediumspringgreen"				=> "#00fa9a",
+		"mediumturquoise"				=> "#48d1cc",
+		"mediumvioletred"				=> "#c71585",
+		"midnightblue"					=> "#191970",
+		"mintcream"						=> "#f5fffa",
+		"mistyrose"						=> "#ffe4e1",
+		"moccasin"						=> "#ffe4b5",
+		"navajowhite"					=> "#ffdead",
+		"navy"							=> "#000080",
+		"oldlace"						=> "#fdf5e6",
+		"olive"							=> "#808000",
+		"olivedrab"						=> "#6b8e23",
+		"orange"						=> "#ffa500",
+		"orangered"						=> "#ff4500",
+		"orchid"						=> "#da70d6",
+		"palegoldenrod"					=> "#eee8aa",
+		"palegreen"						=> "#98fb98",
+		"paleturquoise"					=> "#afeeee",
+		"palevioletred"					=> "#db7093",
+		"papayawhip"					=> "#ffefd5",
+		"peachpuff"						=> "#ffdab9",
+		"peru"							=> "#cd853f",
+		"pink"							=> "#ffc0cb",
+		"plum"							=> "#dda0dd",
+		"powderblue"					=> "#b0e0e6",
+		"purple"						=> "#800080",
+		"red"							=> "#f00",
+		"rosybrown"						=> "#bc8f8f",
+		"royalblue"						=> "#4169e1",
+		"saddlebrown"					=> "#8b4513",
+		"salmon"						=> "#fa8072",
+		"sandybrown"					=> "#f4a460",
+		"seagreen"						=> "#2e8b57",
+		"seashell"						=> "#fff5ee",
+		"sienna"						=> "#a0522d",
+		"silver"						=> "#c0c0c0",
+		"skyblue"						=> "#87ceeb",
+		"slateblue"						=> "#6a5acd",
+		"slategray"						=> "#708090",
+		"snow"							=> "#fffafa",
+		"springgreen"					=> "#00ff7f",
+		"steelblue"						=> "#4682b4",
+		"tan"							=> "#d2b48c",
+		"teal"							=> "#008080",
+		"thistle"						=> "#d8bfd8",
+		"tomato"						=> "#ff6347",
+		"turquoise"						=> "#40e0d0",
+		"violet"						=> "#ee82ee",
+		"wheat"							=> "#f5deb3",
+		"white"							=> "#fff",
+		"whitesmoke"					=> "#f5f5f5",
+		"yellow"						=> "#ff0",
+		"yellowgreen"					=> "#9acd32"
+		);
+	/**
+	 * 
+	 * @var array
+	 */
+	private static $fontWeightTransformations = array
+ 		(
+ 		"normal"						=> "400",
+ 		"bold"							=> "700"
+ 		);
+	/**
+	 * Css property transformations table. Used to convert CSS3 and proprietary properties to the browser-specific counterparts.
+	 * 
+	 * @var array
+	 */
+	private static $propertyTransformations = array
+		(
+		// Property						Array(Mozilla, Webkit, Opera, Internet Explorer); NULL values are placeholders and will get ignored
+		"animation"						=> array(null, "-webkit-animation", null, null),
+		"animation-delay"				=> array(null, "-webkit-animation-delay", null, null),
+		"animation-direction" 			=> array(null, "-webkit-animation-direction", null, null),
+		"animation-duration"			=> array(null, "-webkit-animation-duration", null, null),
+		"animation-fill-mode"			=> array(null, "-webkit-animation-fill-mode", null, null),
+		"animation-iteration-count"		=> array(null, "-webkit-animation-iteration-count", null, null),
+		"animation-name"				=> array(null, "-webkit-animation-name", null, null),
+		"animation-play-state"			=> array(null, "-webkit-animation-play-state", null, null),
+		"animation-timing-function"		=> array(null, "-webkit-animation-timing-function", null, null),
+		"appearance"					=> array("-moz-appearance", "-webkit-appearance", null, null),
+		"backface-visibility"			=> array(null, "-webkit-backface-visibility", null, null),
+		"background-clip"				=> array(null, "-webkit-background-clip", null, null),
+		"background-composite"			=> array(null, "-webkit-background-composite", null, null),
+		"background-inline-policy"		=> array("-moz-background-inline-policy", null, null, null),
+		"background-origin"				=> array(null, "-webkit-background-origin", null, null),
+		"background-position-x"			=> array(null, null, null, "-ms-background-position-x"),
+		"background-position-y"			=> array(null, null, null, "-ms-background-position-y"),
+		"background-size"				=> array(null, "-webkit-background-size", null, null),
+		"behavior"						=> array(null, null, null, "-ms-behavior"),
+		"binding"						=> array("-moz-binding", null, null, null),
+		"border-after"					=> array(null, "-webkit-border-after", null, null),
+		"border-after-color"			=> array(null, "-webkit-border-after-color", null, null),
+		"border-after-style"			=> array(null, "-webkit-border-after-style", null, null),
+		"border-after-width"			=> array(null, "-webkit-border-after-width", null, null),
+		"border-before"					=> array(null, "-webkit-border-before", null, null),
+		"border-before-color"			=> array(null, "-webkit-border-before-color", null, null),
+		"border-before-style"			=> array(null, "-webkit-border-before-style", null, null),
+		"border-before-width"			=> array(null, "-webkit-border-before-width", null, null),
+		"border-border-bottom-colors"	=> array("-moz-border-bottom-colors", null, null, null),
+		"border-bottom-left-radius"		=> array("-moz-border-radius-bottomleft", "-webkit-border-bottom-left-radius", null, null),
+		"border-bottom-right-radius"	=> array("-moz-border-radius-bottomright", "-webkit-border-bottom-right-radius", null, null),
+		"border-end"					=> array("-moz-border-end", "-webkit-border-end", null, null),
+		"border-end-color"				=> array("-moz-border-end-color", "-webkit-border-end-color", null, null),
+		"border-end-style"				=> array("-moz-border-end-style", "-webkit-border-end-style", null, null),
+		"border-end-width"				=> array("-moz-border-end-width", "-webkit-border-end-width", null, null),
+		"border-fit"					=> array(null, "-webkit-border-fit", null, null),
+		"border-horizontal-spacing"		=> array(null, "-webkit-border-horizontal-spacing", null, null),
+		"border-image"					=> array("-moz-border-image", "-webkit-border-image", null, null),
+		"border-left-colors"			=> array("-moz-border-left-colors", null, null, null),
+		"border-radius"					=> array("-moz-border-radius", "-webkit-border-radius", null, null),
+		"border-border-right-colors"	=> array("-moz-border-right-colors", null, null, null),
+		"border-start"					=> array("-moz-border-start", "-webkit-border-start", null, null),
+		"border-start-color"			=> array("-moz-border-start-color", "-webkit-border-start-color", null, null),
+		"border-start-style"			=> array("-moz-border-start-style", "-webkit-border-start-style", null, null),
+		"border-start-width"			=> array("-moz-border-start-width", "-webkit-border-start-width", null, null),
+		"border-top-colors"				=> array("-moz-border-top-colors", null, null, null),
+		"border-top-left-radius"		=> array("-moz-border-radius-topleft", "-webkit-border-top-left-radius", null, null),
+		"border-top-right-radius"		=> array("-moz-border-radius-topright", "-webkit-border-top-right-radius", null, null),
+		"border-vertical-spacing"		=> array(null, "-webkit-border-vertical-spacing", null, null),
+		"box-align"						=> array("-moz-box-align", "-webkit-box-align", null, null),
+		"box-direction"					=> array("-moz-box-direction", "-webkit-box-direction", null, null),
+		"box-flex"						=> array("-moz-box-flex", "-webkit-box-flex", null, null),
+		"box-flex-group"				=> array(null, "-webkit-box-flex-group", null, null),
+		"box-flex-lines"				=> array(null, "-webkit-box-flex-lines", null, null),
+		"box-ordinal-group"				=> array("-moz-box-ordinal-group", "-webkit-box-ordinal-group", null, null),
+		"box-orient"					=> array("-moz-box-orient", "-webkit-box-orient", null, null),
+		"box-pack"						=> array("-moz-box-pack", "-webkit-box-pack", null, null),
+		"box-reflect"					=> array(null, "-webkit-box-reflect", null, null),
+		"box-shadow"					=> array("-moz-box-shadow", "-webkit-box-shadow", null, null),
+		"box-sizing"					=> array("-moz-box-sizing", null, null, null),
+		"color-correction"				=> array(null, "-webkit-color-correction", null, null),
+		"column-break-after"			=> array(null, "-webkit-column-break-after", null, null),
+		"column-break-before"			=> array(null, "-webkit-column-break-before", null, null),
+		"column-break-inside"			=> array(null, "-webkit-column-break-inside", null, null),
+		"column-count"					=> array("-moz-column-count", "-webkit-column-count", null, null),
+		"column-gap"					=> array("-moz-column-gap", "-webkit-column-gap", null, null),
+		"column-rule"					=> array("-moz-column-rule", "-webkit-column-rule", null, null),
+		"column-rule-color"				=> array("-moz-column-rule-color", "-webkit-column-rule-color", null, null),
+		"column-rule-style"				=> array("-moz-column-rule-style", "-webkit-column-rule-style", null, null),
+		"column-rule-width"				=> array("-moz-column-rule-width", "-webkit-column-rule-width", null, null),
+		"column-span"					=> array(null, "-webkit-column-span", null, null),
+		"column-width"					=> array("-moz-column-width", "-webkit-column-width", null, null),
+		"columns"						=> array(null, "-webkit-columns", null, null),
+		"filter"						=> array(null, null, null, "-ms-filter"),
+		"float-edge"					=> array("-moz-float-edge", null, null, null),
+		"font-feature-settings"			=> array("-moz-font-feature-settings", null, null, null),
+		"font-language-override"		=> array("-moz-font-language-override", null, null, null),
+		"font-size-delta"				=> array(null, "-webkit-font-size-delta", null, null),
+		"font-smoothing"				=> array(null, "-webkit-font-smoothing", null, null),
+		"force-broken-image-icon"		=> array("-moz-force-broken-image-icon", null, null, null),
+		"highlight"						=> array(null, "-webkit-highlight", null, null),
+		"hyphenate-character"			=> array(null, "-webkit-hyphenate-character", null, null),
+		"hyphenate-locale"				=> array(null, "-webkit-hyphenate-locale", null, null),
+		"hyphens"						=> array(null, "-webkit-hyphens", null, null),
+		"force-broken-image-icon"		=> array("-moz-image-region", null, null, null),
+		"ime-mode"						=> array(null, null, null, "-ms-ime-mode"),
+		"interpolation-mode"			=> array(null, null, null, "-ms-interpolation-mode"),
+		"layout-flow"					=> array(null, null, null, "-ms-layout-flow"),
+		"layout-grid"					=> array(null, null, null, "-ms-layout-grid"),
+		"layout-grid-char"				=> array(null, null, null, "-ms-layout-grid-char"),
+		"layout-grid-line"				=> array(null, null, null, "-ms-layout-grid-line"),
+		"layout-grid-mode"				=> array(null, null, null, "-ms-layout-grid-mode"),
+		"layout-grid-type"				=> array(null, null, null, "-ms-layout-grid-type"),
+		"line-break"					=> array(null, "-webkit-line-break", null, "-ms-line-break"),
+		"line-clamp"					=> array(null, "-webkit-line-clamp", null, null),
+		"line-grid-mode"				=> array(null, null, null, "-ms-line-grid-mode"),
+		"logical-height"				=> array(null, "-webkit-logical-height", null, null),
+		"logical-width"					=> array(null, "-webkit-logical-width", null, null),
+		"margin-after"					=> array(null, "-webkit-margin-after", null, null),
+		"margin-after-collapse"			=> array(null, "-webkit-margin-after-collapse", null, null),
+		"margin-before"					=> array(null, "-webkit-margin-before", null, null),
+		"margin-before-collapse"		=> array(null, "-webkit-margin-before-collapse", null, null),
+		"margin-bottom-collapse"		=> array(null, "-webkit-margin-bottom-collapse", null, null),
+		"margin-collapse"				=> array(null, "-webkit-margin-collapse", null, null),
+		"margin-end"					=> array("-moz-margin-end", "-webkit-margin-end", null, null),
+		"margin-start"					=> array("-moz-margin-start", "-webkit-margin-start", null, null),
+		"margin-top-collapse"			=> array(null, "-webkit-margin-top-collapse", null, null),
+		"marquee "						=> array(null, "-webkit-marquee", null, null),
+		"marquee-direction"				=> array(null, "-webkit-marquee-direction", null, null),
+		"marquee-increment"				=> array(null, "-webkit-marquee-increment", null, null),
+		"marquee-repetition"			=> array(null, "-webkit-marquee-repetition", null, null),
+		"marquee-speed"					=> array(null, "-webkit-marquee-speed", null, null),
+		"marquee-style"					=> array(null, "-webkit-marquee-style", null, null),
+		"mask"							=> array(null, "-webkit-mask", null, null),
+		"mask-attachment"				=> array(null, "-webkit-mask-attachment", null, null),
+		"mask-box-image"				=> array(null, "-webkit-mask-box-image", null, null),
+		"mask-clip"						=> array(null, "-webkit-mask-clip", null, null),
+		"mask-composite"				=> array(null, "-webkit-mask-composite", null, null),
+		"mask-image"					=> array(null, "-webkit-mask-image", null, null),
+		"mask-origin"					=> array(null, "-webkit-mask-origin", null, null),
+		"mask-position"					=> array(null, "-webkit-mask-position", null, null),
+		"mask-position-x"				=> array(null, "-webkit-mask-position-x", null, null),
+		"mask-position-y"				=> array(null, "-webkit-mask-position-y", null, null),
+		"mask-repeat"					=> array(null, "-webkit-mask-repeat", null, null),
+		"mask-repeat-x"					=> array(null, "-webkit-mask-repeat-x", null, null),
+		"mask-repeat-y"					=> array(null, "-webkit-mask-repeat-y", null, null),
+		"mask-size"						=> array(null, "-webkit-mask-size", null, null),
+		"match-nearest-mail-blockquote-color" => array(null, "-webkit-match-nearest-mail-blockquote-color", null, null),
+		"max-logical-height"			=> array(null, "-webkit-max-logical-height", null, null),
+		"max-logical-width"				=> array(null, "-webkit-max-logical-width", null, null),
+		"min-logical-height"			=> array(null, "-webkit-min-logical-height", null, null),
+		"min-logical-width"				=> array(null, "-webkit-min-logical-width", null, null),
+		"object-fit"					=> array(null, null, "-o-object-fit", null),
+		"object-position"				=> array(null, null, "-o-object-position", null),
+		"opacity"						=> array(array(__CLASS__, "_opacityTransformation")),
+		"outline-radius"				=> array("-moz-outline-radius", null, null, null),
+		"outline-bottom-left-radius"	=> array("-moz-outline-radius-bottomleft", null, null, null),
+		"outline-bottom-right-radius"	=> array("-moz-outline-radius-bottomright", null, null, null),
+		"outline-top-left-radius"		=> array("-moz-outline-radius-topleft", null, null, null),
+		"outline-top-right-radius"		=> array("-moz-outline-radius-topright", null, null, null),
+		"padding-after"					=> array(null, "-webkit-padding-after", null, null),
+		"padding-before"				=> array(null, "-webkit-padding-before", null, null),
+		"padding-end"					=> array("-moz-padding-end", "-webkit-padding-end", null, null),
+		"padding-start"					=> array("-moz-padding-start", "-webkit-padding-start", null, null),
+		"perspective"					=> array(null, "-webkit-perspective", null, null),
+		"perspective-origin"			=> array(null, "-webkit-perspective-origin", null, null),
+		"perspective-origin-x"			=> array(null, "-webkit-perspective-origin-x", null, null),
+		"perspective-origin-y"			=> array(null, "-webkit-perspective-origin-y", null, null),
+		"rtl-ordering"					=> array(null, "-webkit-rtl-ordering", null, null),
+		"scrollbar-3dlight-color"		=> array(null, null, null, "-ms-scrollbar-3dlight-color"),
+		"scrollbar-arrow-color"			=> array(null, null, null, "-ms-scrollbar-arrow-color"),
+		"scrollbar-base-color"			=> array(null, null, null, "-ms-scrollbar-base-color"),
+		"scrollbar-darkshadow-color"	=> array(null, null, null, "-ms-scrollbar-darkshadow-color"),
+		"scrollbar-face-color"			=> array(null, null, null, "-ms-scrollbar-face-color"),
+		"scrollbar-highlight-color"		=> array(null, null, null, "-ms-scrollbar-highlight-color"),
+		"scrollbar-shadow-color"		=> array(null, null, null, "-ms-scrollbar-shadow-color"),
+		"scrollbar-track-color"			=> array(null, null, null, "-ms-scrollbar-track-color"),
+		"stack-sizing"					=> array("-moz-stack-sizing", null, null, null),
+		"svg-shadow"					=> array(null, "-webkit-svg-shadow", null, null),
+		"tab-size"						=> array("-moz-tab-size", null, "-o-tab-size", null),
+		"table-baseline"				=> array(null, null, "-o-table-baseline", null),
+		"text-align-last"				=> array(null, null, null, "-ms-text-align-last"),
+		"text-autospace"				=> array(null, null, null, "-ms-text-autospace"),
+		"text-combine"					=> array(null, "-webkit-text-combine", null, null),
+		"text-decorations-in-effect"	=> array(null, "-webkit-text-decorations-in-effect", null, null),
+		"text-emphasis"					=> array(null, "-webkit-text-emphasis", null, null),
+		"text-emphasis-color"			=> array(null, "-webkit-text-emphasis-color", null, null),
+		"text-emphasis-position"		=> array(null, "-webkit-text-emphasis-position", null, null),
+		"text-emphasis-style"			=> array(null, "-webkit-text-emphasis-style", null, null),
+		"text-fill-color"				=> array(null, "-webkit-text-fill-color", null, null),
+		"text-justify"					=> array(null, null, null, "-ms-text-justify"),
+		"text-kashida-space"			=> array(null, null, null, "-ms-text-kashida-space"),
+		"text-overflow"					=> array(null, null, "-o-text-overflow", "-ms-text-overflow"),
+		"text-security"					=> array(null, "-webkit-text-security", null, null),
+		"text-size-adjust"				=> array(null, "-webkit-text-size-adjust", null, "-ms-text-size-adjust"),
+		"text-stroke"					=> array(null, "-webkit-text-stroke", null, null),
+		"text-stroke-color"				=> array(null, "-webkit-text-stroke-color", null, null),
+		"text-stroke-width"				=> array(null, "-webkit-text-stroke-width", null, null),
+		"text-underline-position"		=> array(null, null, null, "-ms-text-underline-position"),
+		"transform"						=> array("-moz-transform", "-webkit-transform", "-o-transform", null),
+		"transform-origin"				=> array("-moz-transform-origin", "-webkit-transform-origin", "-o-transform-origin", null),
+		"transform-origin-x"			=> array(null, "-webkit-transform-origin-x", null, null),
+		"transform-origin-y"			=> array(null, "-webkit-transform-origin-y", null, null),
+		"transform-origin-z"			=> array(null, "-webkit-transform-origin-z", null, null),
+		"transform-style"				=> array(null, "-webkit-transform-style", null, null),
+		"transition"					=> array("-moz-transition", "-webkit-transition", "-o-transition", null),
+		"transition-delay"				=> array("-moz-transition-delay", "-webkit-transition-delay", "-o-transition-delay", null),
+		"transition-duration"			=> array("-moz-transition-duration", "-webkit-transition-duration", "-o-transition-duration", null),
+		"transition-property"			=> array("-moz-transition-property", "-webkit-transition-property", "-o-transition-property", null),
+		"transition-timing-function"	=> array("-moz-transition-timing-function", "-webkit-transition-timing-function", "-o-transition-timing-function", null),
+		"user-drag"						=> array(null, "-webkit-user-drag", null, null),
+		"user-focus"					=> array("-moz-user-focus", null, null, null),
+		"user-input"					=> array("-moz-user-input", null, null, null),
+		"user-modify"					=> array("-moz-user-modify", "-webkit-user-modify", null, null),
+		"user-select"					=> array("-moz-user-select", "-webkit-user-select", null, null),
+		"white-space"					=> array(array(__CLASS__, "_whiteSpacePreWrapTransformation")),
+		"window-shadow"					=> array("-moz-window-shadow", null, null, null),
+		"word-break"					=> array(null, null, null, "-ms-word-break"),
+		"word-wrap"						=> array(null, null, null, "-ms-word-wrap"),
+		"writing-mode"					=> array(null, "-webkit-writing-mode", null, "-ms-writing-mode"),
+		"zoom"							=> array(null, null, null, "-ms-zoom")
+		);
+	/**
+	 * Minifies the Css.
+	 * 
+	 * @param string $css Css as string
+	 * @param array $config {@link http://code.google.com/p/cssmin/wiki/Configuration Configuration} as array [optional]
+	 * @return string Minified css
+	 */
+	public static function minify($css, $config = array())
+		{
+		$tokens = self::parse($css);
+		// Normalize configuration parameters
+		if (count($config) > 0)
+			{
+			$config = array_combine(array_map("trim", array_map("strtolower", array_keys($config))), array_values($config));
+			}
+		$config = array_merge(self::$defaultConfiguration, $config);
+		// Minification options/variables
+		$sRemoveEmptyBlocks				= $config["remove-empty-blocks"];
+		$sRemoveEmptyRulesets			= $config["remove-empty-rulesets"];
+		$sRemoveLastSemicolon			= $config["remove-last-semicolons"];
+		$sRemoveComments				= $config["remove-comments"];
+		$sConvertCss3Properties 		= $config["convert-css3-properties"];
+		$sCss3Variables					= array();
+		$sConvertFontWeightValues		= $config["convert-font-weight-values"];
+		$rConvertFontWeightValues		= "/(^|\s)+(normal|bold)(\s|$)+/ie";
+		$rConvertFontWeightValuesR		= "'\\1'.self::\$fontWeightTransformations['\\2'].'\\3'";
+		$sConvertNamedColorValues		= $config["convert-named-color-values"];
+		$rConvertNamedColorValues 		= "/(^|\s)+(" . implode("|", array_keys(self::$colorTransformations)) . ")(\s|$)+/ie";
+		$rConvertNamedColorValuesR 		= "'\\1'.self::\$colorTransformations['\\2'].'\\3'";
+		$sConvertRgbColorValues			= $config["convert-rgb-color-values"];
+		$rConvertRgbColorValues			= "/rgb\s*\(\s*([0-9%]+)\s*,\s*([0-9%]+)\s*,\s*([0-9%]+)\s*\)/iS";
+		$sConvertHslColorValues			= $config["convert-rgb-color-values"];
+		$rConvertHslColorValues			= "/^hsl\s*\(\s*([0-9]+)\s*,\s*([0-9]+)\s*%\s*,\s*([0-9]+)\s*%\s*\)/iS";
+		$sCompressColorValues			= $config["compress-color-values"];
+		$rCompressColorValues			= "/\#([0-9a-f]{6})/iS";
+		$sCompressUnitValues			= $config["compress-unit-values"];
+		$rCompressUnitValues1			= "/(^| |-)0\.([0-9]+?)(0+)?(%|em|ex|px|in|cm|mm|pt|pc)/iS";
+		$rCompressUnitValues1R			= "\${1}.\${2}\${4}";
+		$rCompressUnitValues2			= "/(^| )-?(\.?)0(%|em|ex|px|in|cm|mm|pt|pc)/iS";
+		$rCompressUnitValues2R			= "\${1}0";
+		$sEmulateCcss3Variables			= $config["emulate-css3-variables"];
+		$sImportImports					= $config["import-imports"];
+		$sImportBasePath				= $config["import-base-path"];
+		$sImportRemoveInvalid			= $config["import-remove-invalid"];
+		$sImportStartBlockTokens		= array(self::T_AT_MEDIA_START, self::T_AT_FONT_FACE_START, self::T_AT_PAGE_START);
+		$sImportEndBlockTokens 			= array(self::T_AT_MEDIA_END, self::T_AT_FONT_FACE_END, self::T_AT_PAGE_END);
+		$sImportStatementTokens 		= array(self::T_AT_RULE, self::T_AT_IMPORT);
+		$sImportMediaEndToken			= array(self::T_AT_MEDIA_END);
+		$sImportImportedFiles			= array();
+		$sRemoveTokens					= array_filter(array(self::T_NULL, ($sRemoveComments ? self::T_COMMENT : false)));
+		
+		/*
+		 * Import @import at-rules.
+		 * 
+		 * If the @import at-rule defines one or more media type the imported tokens wil get wrapped into T_AT_MEDIA_START 
+		 * and T_AT_MEDIA_END token. @font-face, @media and @page at-rule blocks and at-rule statements will get excluded
+		 * of the wraping.
+		 * 
+		 * Additional @media at-rule blocks with media types not defined in the @import at-rule have to get removed.
+		 * Browsers ignore @media at-rule block with media types incompatible to the media types defined in the @import
+		 * at-rule.
+		 * 
+		 * Also @import rules require special treatment. If a included @import at-rule has no media type or only the 
+		 * "all" media type defined the media type of the @import at-rule will get set to the ones defined in the parent
+		 * @import at-rule. Media types not defined in the parent @import at-rule will get filtered. @import at-rule
+		 * with not matching media types will get removed.
+		 * 
+		 * For compression if a @media at-rule block is defined the same media type as the @import at-rule the 
+		 * T_AT_MEDIA_START and T_AT_MEDIA_END tokens will get removed.
+		 */
+		if ($sImportImports && is_dir($sImportBasePath))
+			{
+			$importFile				= "";
+			$importTokens			= array();
+			$importMediaStartToken	= array(self::T_NULL);
+			$importBlocks			= array();
+			for($i = 0, $l = count($tokens); $i < $l; $i++)
+				{
+				if ($tokens[$i][0] == self::T_AT_IMPORT && file_exists($sImportBasePath . $tokens[$i][1]))
+					{
+					$importFile = $sImportBasePath . $tokens[$i][1];
+					// Import file already imported; remove this @import at-rule to prevent any recursion
+					if (in_array($importFile, $sImportImportedFiles))
+						{
+						$tokens[$i] = array(self::T_NULL);
+						}
+					else
+						{
+						$sImportImportedFiles[]	= $sImportBasePath . $tokens[$i][1];
+						$importTokens			= self::parse(file_get_contents($importFile));
+						// The @import at-rule has media types defined requires special handling
+						if (count($tokens[$i][2]) > 0 && !(count($tokens[$i][2]) == 1 && $tokens[$i][2][0] == "all"))
+							{
+							// Create T_AT_MEDIA_START token used for wrapping and array for blocks
+							$importMediaStartToken	= array(self::T_AT_MEDIA_START, $tokens[$i][2]);
+							$importBlocks			= array();
+							// Filter or set media types of @import at-rule or remove the @import at-rule if no media type is matching the parent @import at-rule
+							for($ii = 0, $ll = count($importTokens); $ii < $ll; $ii++)
+								{
+								if ($importTokens[$ii][0] == self::T_AT_IMPORT)
+									{
+									// @import at-rule defines no media type or only the "all" media type; set the media types to the one defined in the parent @import at-rule
+									if (count($importTokens[$ii][2]) == 0 || (count($importTokens[$ii][2]) == 1 && $importTokens[$ii][2][0]) == "all")
+										{
+										$importTokens[$ii][2] = $tokens[$i][2];
+										}
+									// @import at-rule defineds one or more media types; filter out media types not matching with the  parent @import at-rule
+									elseif (count($importTokens[$ii][2] > 0))
+										{
+										foreach ($importTokens[$ii][2] as $index => $mediaType)
+											{
+											if (!in_array($mediaType, $tokens[$i][2]))
+												{
+												unset($importTokens[$ii][2][$index]);
+												}
+											}
+										$importTokens[$ii][2] = array_values($importTokens[$ii][2]);
+										// If there are no media types left in the @import at-rule remove the @import at-rule
+										if (count($importTokens[$ii][2]) == 0)
+											{
+											$importTokens[$ii] = array(self::T_NULL);
+											}
+										}
+									}
+								}
+							// Remove media types of @media at-rule block not defined in the @import at-rule
+							for($ii = 0, $ll = count($importTokens); $ii < $ll; $ii++)
+								{
+								if ($importTokens[$ii][0] == self::T_AT_MEDIA_START)
+									{
+									foreach ($importTokens[$ii][1] as $index => $mediaType)
+										{
+										if (!in_array($mediaType, $tokens[$i][2]))
+											{
+											unset($importTokens[$ii][1][$index]);
+											}
+										$importTokens[$ii][1] = array_values($importTokens[$ii][1]);
+										}
+									}
+								}
+							// If no media types left of the @media at-rule block remove the complete block
+							for($ii = 0, $ll = count($importTokens); $ii < $ll; $ii++)
+								{
+								if ($importTokens[$ii][0] == self::T_AT_MEDIA_START)
+									{
+									if (count($importTokens[$ii][1]) == 0)
+										{
+										for ($iii = $ii; $iii < $ll; $iii++)
+											{
+											if ($importTokens[$iii][0] == self::T_AT_MEDIA_END)
+												{
+												break;
+												}
+											}
+										if ($importTokens[$iii][0] == self::T_AT_MEDIA_END)
+											{
+											array_splice($importTokens, $ii, $iii - $ii + 1, array());
+											$ll = count($importTokens);
+											}
+										}
+									}
+								}
+							// If the media types of the @media at-rule equals the media types defined in the @import at-rule remove the T_AT_MEDIA_START and T_AT_MEDIA_END token
+							for($ii = 0, $ll = count($importTokens); $ii < $ll; $ii++)
+								{
+								if ($importTokens[$ii][0] == self::T_AT_MEDIA_START && count(array_diff($tokens[$i][2], $importTokens[$ii][1])) == 0)
+									{
+									for ($iii = $ii; $iii < $ll; $iii++)
+										{
+										if ($importTokens[$iii][0] == self::T_AT_MEDIA_END)
+											{
+											break;
+											}
+										}
+									if ($importTokens[$iii][0] == self::T_AT_MEDIA_END)
+										{
+										unset($importTokens[$ii]);
+										unset($importTokens[$iii]);
+										$importTokens = array_values($importTokens);
+										$ll = count($importTokens);
+										}
+									}
+								}
+							// Extract @import at-rule tokens
+							for($ii = 0, $ll = count($importTokens); $ii < $ll; $ii++)
+								{
+								if ($importTokens[$ii][0] == self::T_AT_IMPORT)
+									{
+									$importBlocks = array_merge($importBlocks, array_splice($importTokens, $ii, 1, array()));
+									$ll = count($importTokens);
+									}
+								}
+							// Extract T_AT_RULE tokens
+							for($ii = 0, $ll = count($importTokens); $ii < $ll; $ii++)
+								{
+								if ($importTokens[$ii][0] == self::T_AT_RULE)
+									{
+									$importBlocks = array_merge($importBlocks, array_splice($importTokens, $ii, 1, array()));
+									$ll = count($importTokens);
+									}
+								}
+							// Extract the @font-face, @media and @page at-rule block
+							for($ii = 0, $ll = count($importTokens); $ii < $ll; $ii++)
+								{
+								if (in_array($importTokens[$ii][0], $sImportStartBlockTokens))
+									{
+									for ($iii = $ii; $iii < $ll; $iii++)
+										{
+										if (in_array($importTokens[$iii][0], $sImportEndBlockTokens))
+											{
+											break;
+											}
+										}
+									if (isset($importTokens[$iii][0]) && in_array($importTokens[$iii][0], $sImportEndBlockTokens))
+										{
+										$importBlocks = array_merge($importBlocks, array_splice($importTokens, $ii, $iii - $ii + 1, array()));
+										$ll = count($importTokens);
+										}
+									}
+								}
+							// Create the array with imported tokens for @import at-rules with defined media types
+							$importTokens = array_merge($importBlocks, array($importMediaStartToken), $importTokens, array($sImportMediaEndToken));
+							}
+						array_splice($tokens, $i, 1, $importTokens);
+						// Modify parameters of the for-loop
+						$i--;
+						$l = count($tokens);
+						}
+					}
+				}
+			}
+		/*
+		 * Remove tokens.
+		 * 
+		 * Remove tokens not required for minification. Defaults to T_NULL and T_COMMENT tokens.
+		 * 
+		 * If CSS Level 3 Variables (emulate-css3-variables) is disabled add T_AT_VARIABLES_START, T_VARIABLE_DECLARATION 
+		 * and T_AT_VARIABLES_END tokens.
+		 * 
+		 * If the configuration options "import-imports" and "import-remove-invalid" is enabled remove also remaining 
+		 * T_AT_IMPORT tokens.
+		 */
+		if (!$sEmulateCcss3Variables)
+			{
+			$sRemoveTokens = array_merge($sRemoveTokens, array(self::T_AT_VARIABLES_START, self::T_VARIABLE_DECLARATION, self::T_AT_VARIABLES_END));
+			}
+		if ($sImportImports && is_dir($sImportBasePath) && $sImportRemoveInvalid)
+			{
+			$sRemoveTokens[] = self::T_AT_IMPORT;
+			}
+		for($i = 0, $l = count($tokens); $i < $l; $i++)
+			{
+			if (in_array($tokens[$i][0], $sRemoveTokens))
+				{
+				unset($tokens[$i]);
+				}
+			}
+		$tokens = array_values($tokens);
+		/*
+		 * Remove empty rulesets
+		 * 
+		 * The ruleset is empty if it only contains the tokens T_RULESET_START, T_SELECTORS, T_DECLARATIONS_START, 
+		 * T_DECLARATIONS_END and T_RULESET_END
+		 */
+		if ($sRemoveEmptyRulesets)
+			{
+			for($i = 0, $l = count($tokens); $i < $l; $i++)
+				{
+				if ($tokens[$i][0] == self::T_RULESET_START && $tokens[$i+4][0] == self::T_RULESET_END)
+					{
+					unset($tokens[$i]); 	// T_RULESET_START
+					unset($tokens[++$i]);	// T_SELECTORS
+					unset($tokens[++$i]);	// T_DECLARATIONS_START
+					unset($tokens[++$i]);	// T_DECLARATIONS_END
+					unset($tokens[++$i]);	// T_RULESET_END
+					}
+				}
+			$tokens = array_values($tokens);
+			}
+		/*
+		 * Remove empty @media, @font-face or @page blocks
+		 */
+		if ($sRemoveEmptyBlocks)
+			{
+			for($i = 0, $l = count($tokens); $i < $l; $i++)
+				{
+				if (($tokens[$i][0] == self::T_AT_MEDIA_START && $tokens[$i+1][0] == self::T_AT_MEDIA_END)
+					|| ($tokens[$i][0] == self::T_AT_FONT_FACE_START && $tokens[$i+1][0] == self::T_AT_FONT_FACE_END)
+					|| ($tokens[$i][0] == self::T_AT_PAGE_START && $tokens[$i+1][0] == self::T_AT_PAGE_END))
+					{
+					unset($tokens[$i]);		// T_AT_MEDIA_START, T_AT_FONT_FACE_START, T_AT_PAGE_START
+					unset($tokens[++$i]);	// T_AT_MEDIA_END, T_AT_FONT_FACE_END, T_AT_PAGE_END
+					}
+				}
+			$tokens = array_values($tokens);
+			}
+		/*
+		 * Parse CSS Level 3 variables if the configuration option "emulate-css3-variables" is enabled. 
+		 */
+		if ($sEmulateCcss3Variables)
+			{
+			for($i = 0, $l = count($tokens); $i < $l; $i++)
+				{
+				// Found a variable declaration
+				if ($tokens[$i][0] == self::T_VARIABLE_DECLARATION)
+					{
+					for($i2 = 0, $l2 = count($tokens[$i][3]); $i2 < $l2; $i2++)
+						{
+						// Create the scope (all, screen, print, etc.) if not defined
+						if (!isset($sCss3Variables[$tokens[$i][3][$i2]]))
+							{
+							$sCss3Variables[$tokens[$i][3][$i2]] = array();
+							}
+						// Store variable and value
+						$sCss3Variables[$tokens[$i][3][$i2]][$tokens[$i][1]] = $tokens[$i][2];
+						}
+					}
+				}
+			}
+		/*
+		 * Conversion and compression
+		 */
+		for($i = 0, $l = count($tokens); $i < $l; $i++)
+			{
+			if ($tokens[$i][0] == self::T_DECLARATION)
+				{
+				/*
+				 * Search for CSS Level 3 variable statement if the configuration option "emulate-css3-variables" is
+				 * enabled. 
+				 * 
+				 * The variable value depends on the media type of the declaration. Primary the variable value
+				 * of the media type of the declaration will get used if available. If no variable value for the media 
+				 * type of the declaration is defined use the variable value definition for the media type "all". 
+				 */
+				if ($sEmulateCcss3Variables)
+					{
+					// Found a 'var' statement
+					if (strtolower(substr($tokens[$i][2], 0, 4)) == "var(" && substr($tokens[$i][2], -1, 1) == ")")
+						{
+						// Extract the variable name
+						$variable = trim(substr($tokens[$i][2], 4, -1));
+						// Append the media type "all" to the declaration
+						$tokens[$i][3][] = "all"; 
+						for($i2 = 0, $l2 = count($tokens[$i][3]); $i2 < $l2; $i2++)
+							{
+							// Found a variable value for the current media type scope
+							if (isset($sCss3Variables[$tokens[$i][3][$i2]][$variable]))
+								{
+								$tokens[$i][2] = $sCss3Variables[$tokens[$i][3][$i2]][$variable];
+								break;
+								}
+							}
+						}
+					}
+				/* 
+				 * Convert font-weight values if the configuration option "convert-font-weight-values" is enabled.
+				 *  
+				 * Will convert font weight values "normal" to "400" and "bold" to "700". Restricted to "font-weight"
+				 * and "font" declarations.
+				 */
+				if ($sConvertFontWeightValues && in_array(strtolower($tokens[$i][1]), array("font-weight", "font")) && preg_match($rConvertFontWeightValues, $tokens[$i][2]))
+					{
+					$tokens[$i][2] = preg_replace($rConvertFontWeightValues, $rConvertFontWeightValuesR, $tokens[$i][2]);
+					}
+				/**
+				 * Compress unit values if the configuration option "compress-unit-values" is enabled.
+				 * 
+				 * This will compress:
+				 * 	1. "0.5px" to ".5px"
+				 * 	2. "0px" to "0"
+				 * 	3. "0 0 0 0", "0 0 0" or "0 0" to "0"
+				 */
+				if ($sCompressUnitValues)
+					{
+					$tokens[$i][2] = preg_replace($rCompressUnitValues1, $rCompressUnitValues1R, $tokens[$i][2]);
+					$tokens[$i][2] = preg_replace($rCompressUnitValues2, $rCompressUnitValues2R, $tokens[$i][2]);
+					if (strtolower($tokens[$i][1]) != "background-position")
+						{
+						if ($tokens[$i][2] == "0 0 0 0" || $tokens[$i][2] == "0 0 0" || $tokens[$i][2] == "0 0") {$tokens[$i][2] = "0";}
+						}
+					}
+				/*
+				 * Convert RGB color values if the configuration option "convert-rgb-color-values" is enabled.
+				 * 
+				 * This will convert values like "rgb(200,60%,5)" to "#c89905".
+				 */
+				if ($sConvertRgbColorValues && preg_match($rConvertRgbColorValues, $tokens[$i][2], $m))
+					{
+					for ($i2 = 1, $l2 = count($m); $i2 < $l2; $i2++)
+						{
+						if (strpos("%", $m[$i2]) !== false)
+							{
+							$m[$i2] = substr($m[$i2], 0, -1);
+							$m[$i2] = (int) (256 * ($m[$i2] / 100));
+							}
+						$m[$i2] = str_pad(dechex($m[$i2]),  2, "0", STR_PAD_LEFT);
+						}
+					$tokens[$i][2] = str_replace($m[0], "#" . $m[1] . $m[2] . $m[3], $tokens[$i][2]);
+					}
+				/**
+				 * Convert HSL color values if the configuration option "convert-hsl-color-values" is enabled.
+				 * 
+				 * This will convert values like "hsl(232,36%,48%)" to "#4e5aa7".
+				 */
+				if ($sConvertHslColorValues && preg_match($rConvertHslColorValues, $tokens[$i][2], $m))
+					{
+					$tokens[$i][2] = str_replace($m[0], self::_hsl2hex($m[1], $m[2], $m[3]), $tokens[$i][2]);
+					}
+				/**
+				 * Compress color values if the configuration option "compress-color-values" is enabled.
+				 * 
+				 * This will convert color value like "#aabbcc" to their short notation "#abc". 
+				 */
+				if ($sCompressColorValues && preg_match($rCompressColorValues, $tokens[$i][2], $m))
+					{
+					$m[1] = strtolower($m[1]);
+					if (substr($m[1], 0, 1) == substr($m[1], 1, 1) && substr($m[1], 2, 1) == substr($m[1], 3, 1) && substr($m[1], 4, 1) == substr($m[1], 5, 1))
+						{
+						$tokens[$i][2] = str_replace($m[0], "#" . substr($m[1], 0, 1) . substr($m[1], 2, 1) . substr($m[1], 4, 1), $tokens[$i][2]);
+						}
+					}
+				/**
+				 * Convert named color values if the configuration option "convert-named-color-values" is enabled.
+				 * 
+				 * This will convert named color value like "black" to their hexadecimal notation "#000".
+				 */
+				if ($sConvertNamedColorValues && preg_match($rConvertNamedColorValues, $tokens[$i][2]))
+					{
+					$tokens[$i][2] = preg_replace($rConvertNamedColorValues, $rConvertNamedColorValuesR, $tokens[$i][2]);
+					}
+				}
+			}
+		/*
+		 * Create minified css
+		 */
+		$r = "";
+		for($i = 0, $l = count($tokens); $i < $l; $i++)
+			{
+			// T_AT_RULE
+			if ($tokens[$i][0] == self::T_AT_RULE)
+				{
+				$r .= "@" . $tokens[$i][1] . " " . $tokens[$i][2] . ";";
+				}
+			// T_AT_IMPORT
+			if ($tokens[$i][0] == self::T_AT_IMPORT)
+				{
+				$r .= "@import \"" . $tokens[$i][1] . "\" " . implode(",", $tokens[$i][2]) . ";";
+				}
+			// T_AT_MEDIA_START
+			elseif ($tokens[$i][0] == self::T_AT_MEDIA_START)
+				{
+				if (count($tokens[$i][1]) == 1 && $tokens[$i][1][0] == "all")
+					{
+					$r .= "@media{";
+					}
+				else
+					{
+					$r .= "@media " . implode(",", $tokens[$i][1]) . "{";
+					}
+				}
+			// T_AT_FONT_FACE_START
+			elseif ($tokens[$i][0] == self::T_AT_FONT_FACE_START)
+				{
+				$r .= "@font-face{";
+				}
+			// T_FONT_FACE_DECLARATION
+			elseif ($tokens[$i][0] == self::T_FONT_FACE_DECLARATION)
+				{
+				$r .= $tokens[$i][1] . ":" . $tokens[$i][2] . ($sRemoveLastSemicolon && $tokens[$i+1][0] == self::T_AT_FONT_FACE_END ? "" : ";");
+				}
+			// T_AT_PAGE_START
+			elseif ($tokens[$i][0] == self::T_AT_PAGE_START)
+				{
+				$r .= "@page{";
+				}
+			// T_PAGE_DECLARATION
+			elseif ($tokens[$i][0] == self::T_PAGE_DECLARATION)
+				{
+				$r .= $tokens[$i][1] . ":" . $tokens[$i][2] . ($sRemoveLastSemicolon && $tokens[$i+1][0] == self::T_AT_PAGE_END ? "" : ";");
+				}
+			// T_SELECTORS
+			elseif ($tokens[$i][0] == self::T_SELECTORS)
+				{
+				$r .= implode(",", $tokens[$i][1]);
+				}
+			// Start of declarations
+			elseif ($tokens[$i][0] == self::T_DECLARATIONS_START)
+				{
+				$r .= "{";
+				}
+			// T_DECLARATION
+			elseif ($tokens[$i][0] == self::T_DECLARATION)
+				{
+				// Convert CSS Level 3 and browser specific properties if "convert-css3-properties" is enabled
+				if ($sConvertCss3Properties && isset(self::$propertyTransformations[$tokens[$i][1]]))
+					{
+					foreach (self::$propertyTransformations[$tokens[$i][1]] as $value)
+						{
+						if (!is_null($value) && !is_array($value))
+							{
+							$r .= $value . ":" . $tokens[$i][2] . ";";
+							}
+						elseif (is_array($value) && is_callable($value))
+							{
+							$r .= call_user_func_array($value, array($tokens[$i][1], $tokens[$i][2]));
+							}
+						}
+					}
+				$r .= $tokens[$i][1] . ":" . $tokens[$i][2] . ($sRemoveLastSemicolon && (isset($tokens[$i+1]) &&$tokens[$i+1][0] == self::T_DECLARATIONS_END) ? "" : ";");
+				}
+			// T_DECLARATIONS_END, T_AT_MEDIA_END, T_AT_FONT_FACE_END, T_AT_PAGE_END
+			elseif (in_array($tokens[$i][0], array(self::T_DECLARATIONS_END, self::T_AT_MEDIA_END, self::T_AT_FONT_FACE_END, self::T_AT_PAGE_END)))
+				{
+				$r .= "}";
+				}
+			elseif ($tokens[$i][0] == self::T_COMMENT)
+				{
+				$r .= "\n" . $tokens[$i][1] . "\n";
+				}
+			else
+				{
+				// Tokens with no output: T_NULL, T_COMMENT, T_RULESET_START, T_RULESET_END, T_AT_VARIABLES_START, T_VARIABLE_DECLARATION and T_AT_VARIABLES_END
+				}
+			}
+		return $r;
+		}
+	/**
+	 * Parses the Css and returns an array of tokens.
+	 * 
+	 * @param string $css
+	 * @return array Array of tokens
+	 */
+	public static function parse($css)
+		{
+		/*
+		 * Settings
+		 */
+		$sDefaultScope		= array("all");						// Default scope
+		$sDefaultTrim		= " \t\n\r\0\x0B";					// Default trim charlist
+		$sTokenChars		= "@{}();:\n\"'/*,";				// Tokens triggering parser processing
+		$sWhitespaceChars	= $sDefaultTrim;					// Whitespace chars
+		/*
+		 * Basic variables
+		 */
+		$c					= null;								// Current char
+		$p					= null;								// Previous char
+		$buffer 			= "";								// Buffer
+		$errors				= array();
+		$saveBuffer			= "";								// Saved buffer
+		$state				= array(self::T_DOCUMENT);			// State stack
+		$currentState		= self::T_DOCUMENT;					// Current state
+		$scope				= $sDefaultScope;					// Current scope
+		$stringChar			= null;								// Current string delimiter char
+		$isFilterWs			= true;								// Filter double whitespaces? Will get disabled for comments, selectors, etc.
+		$selectors			= array();							// Array with collected selectors
+		$importUrl			= "";								// @import Url
+		$line				= 1;								// Line
+		$r 					= array();							// Return value
+		/*
+		 * Prepare: normalize line endings
+		 */
+		$css = str_replace("\r\n", "\n", $css); // Windows to Unix line endings
+		$css = str_replace("\r", "\n", $css); // Mac to Unix line endings
+		/**
+		 * Parse:
+		 */
+		for ($i = 0, $l = strlen($css); $i < $l; $i++)
+			{
+			// Set the current Char
+			$c = substr($css, $i, 1);
+			// Increments line number on line endings
+			if ($c == "\n")
+				{
+				$line++;
+				}
+			// Whitespace handling
+			if ($isFilterWs && strpos($sWhitespaceChars, $c) !== false)
+				{
+				// Filter double whitespaces if the previous char is also a whitespace
+				if (strpos($sWhitespaceChars, $p) !== false)
+					{
+					continue;
+					}
+				// Normalize whitespace chars to space
+				elseif ($c != " " && strpos($sWhitespaceChars, $c) !== false)
+					{
+					$c = " ";
+					}
+				}
+			$buffer .= $c;
+			// Extended processing only if the current char is a token char
+			if (strpos($sTokenChars, $c) !== false)
+				{
+				// Set the current state
+				$currentState = $state[count($state) - 1];
+				/*
+				 * Start of comment
+				 * 
+				 * The current buffer will get saved and restored at the end of the comment because comments are 
+				 * allowed within many parsable elements.
+				 */
+				if ($p == "/" && $c == "*" && $currentState != self::T_STRING && $currentState != self::T_COMMENT)
+					{
+					$saveBuffer = substr($buffer, 0, -2); // Save the current buffer 
+					$buffer 	= $p . $c;
+					$isFilterWs	= false;
+					array_push($state, self::T_COMMENT);
+					}
+				/*
+				 * End of comment
+				 */
+				elseif ($p == "*" && $c == "/" && $currentState == self::T_COMMENT)
+					{
+					$r[]		= array(self::T_COMMENT, trim($buffer));
+					$buffer		= $saveBuffer; // Restore the buffer
+					$isFilterWs	= true;
+					array_pop($state);
+					}
+				/*
+				 * Start of string
+				 */
+				elseif (($c == "\"" || $c == "'") && $currentState != self::T_STRING && $currentState != self::T_COMMENT && $currentState != self::T_STRING_URL)
+					{
+					$stringChar	= $c;
+					$isFilterWs	= false;
+					array_push($state, self::T_STRING);
+					}
+				/**
+				 * Escaped LF in string => remove escape backslash and LF
+				 */
+				elseif ($c == "\n" && $p == "\\" && $currentState == self::T_STRING)
+					{
+					$buffer = substr($buffer, 0, -2);
+					}
+				/**
+				 * Parse error: Unescaped LF in string literal
+				 */
+				elseif ($c == "\n" && $p != "\\" && $currentState == self::T_STRING)
+					{
+					$errorStart	= strrpos($css, "\n", - ($l - strrpos($css, ":", -($l - $i + 2))));
+					$errorEnd	= strpos($css, "\n", $errorStart + 1);
+					$errorLine = trim(substr($css, $errorStart, $errorEnd - $errorStart));
+					trigger_error("Line #" . $line . ": Unescaped line ending in string literal:\n<code>" . $errorLine . "_</code>", E_USER_WARNING);
+					$buffer		= substr($buffer, 0, -1) . $stringChar; // Replace the LF with the current string char
+					$stringChar	= null;
+					$isFilterWs	= true;
+					array_pop($state);
+					}
+				/*
+				 * End of string
+				 */
+				elseif ($c === $stringChar && $currentState == self::T_STRING)
+					{
+					if ($p == "\\") // Previous char is a escape char
+						{
+						$count = 1; 
+						$i2 = $i -2;
+						while (substr($css, $i2, 1) == "\\")
+							{
+							$count++;
+							$i2--;
+							}
+						// if count of escape chars is uneven => continue with string...
+						if ($count % 2)
+							{
+							continue;
+							}
+						}
+					// ...else end the string
+					$isFilterWs	= true;
+					// Special handling for @import url strings
+					if ($state[count($state) - 2] == self::T_AT_IMPORT)
+						{
+						$importUrl	= $buffer;
+						$buffer		= "";
+						}
+					array_pop($state);
+					$stringChar = null;
+					}
+				/**
+				 * Start of expression string property
+				 */
+				elseif ($c == "(" && ($currentState != self::T_COMMENT && $currentState != self::T_STRING && $currentState != self::T_STRING_URL) && strtolower(substr($css, $i - 10, 10) == "expression") 
+					&& ($currentState == self::T_DECLARATION || $currentState == self::T_FONT_FACE_DECLARATION || $currentState == self::T_PAGE_DECLARATION || $currentState == self::T_VARIABLE_DECLARATION))
+					{
+					array_push($state, self::T_STRING_EXPRESSION);
+					}
+				/**
+				 * End of expression string property
+				 */
+				elseif (($c == ";" || $c == "}") && $p == ")" && $currentState == self::T_STRING_EXPRESSION)
+					{
+					$buffer = substr($buffer, 0, -2);
+					array_pop($state);
+					$i = $i - 2;
+					}
+				/**
+				 * Start of url string property
+				 */
+				elseif ($c == "(" && ($currentState != self::T_COMMENT && $currentState != self::T_STRING && $currentState != self::T_STRING_EXPRESSION) && strtolower(substr($css, $i - 3, 3) == "url") 
+					&& ($currentState == self::T_DECLARATION || $currentState == self::T_FONT_FACE_DECLARATION || $currentState == self::T_PAGE_DECLARATION || $currentState == self::T_VARIABLE_DECLARATION || $currentState == self::T_AT_IMPORT))
+					{
+					array_push($state, self::T_STRING_URL);
+					}
+				/**
+				 * End of url string property
+				 */
+				elseif (($c == ")" || $c == "\n") && $currentState == self::T_STRING_URL)
+					{
+					if ($p == "\\")
+						{
+						continue;
+						}
+					// Special handling for @import urls
+					if ($state[count($state) - 2] == self::T_AT_IMPORT)
+						{
+						$importUrl = $buffer;
+						$buffer = "";
+						}
+					array_pop($state);
+					}
+				/*
+				 * Start of at-rule @media block
+				 */
+				elseif ($c == "@" && $currentState == self::T_DOCUMENT && strtolower(substr($css, $i, 6)) == "@media")
+					{
+					$i			= $i + 6;
+					$buffer 	= "";
+					array_push($state, self::T_AT_MEDIA_START);
+					}
+				/*
+				 * At-rule @media block media types
+				 */
+				elseif ($c == "{" && $currentState == self::T_AT_MEDIA_START)
+					{
+					$buffer 	= strtolower(trim($buffer, $sDefaultTrim . "{"));
+					$scope		= $buffer != "" ? array_filter(array_map("trim", explode(",", $buffer))) : $sDefaultScope;
+					$r[]		= array(self::T_AT_MEDIA_START, $scope);
+					$i			= $i++;
+					$buffer		= "";
+					array_pop($state);
+					array_push($state, self::T_AT_MEDIA);
+					}
+				/*
+				 * End of at-rule @media block
+				 */
+				elseif ($currentState == self::T_AT_MEDIA && $c == "}")
+					{
+					$r[]		= array(self::T_AT_MEDIA_END);
+					$scope		= $sDefaultScope;
+					$buffer		= "";
+					array_pop($state);
+					}
+				/*
+				 * Start of at-rule @font-face block
+				 */
+				elseif ($c == "@" && $currentState == self::T_DOCUMENT && strtolower(substr($css, $i, 10)) == "@font-face")
+					{
+					$r[]		= array(self::T_AT_FONT_FACE_START);
+					$i			= $i + 10;
+					$buffer 	= "";
+					array_push($state, self::T_AT_FONT_FACE);
+					}
+				/*
+				 * @font-face declaration: Property
+				 */
+				elseif ($c == ":" && $currentState == self::T_AT_FONT_FACE)
+					{
+					$property	= trim($buffer, $sDefaultTrim . ":{");
+					$buffer		= "";
+					array_push($state, self::T_FONT_FACE_DECLARATION);
+					}
+				/*
+				 * @font-face declaration: Value
+				 */
+				elseif (($c == ";" || $c == "}") && $currentState == self::T_FONT_FACE_DECLARATION)
+					{
+					$value		= trim($buffer, $sDefaultTrim . ";}");
+					$r[]		= array(self::T_FONT_FACE_DECLARATION, $property, $value, $scope);
+					$buffer		= "";
+					array_pop($state);
+					if ($c == "}") // @font-face declaration closed with a right curly brace => closes @font-face block
+						{
+						array_pop($state);
+						$r[]	= array(self::T_AT_FONT_FACE_END);
+						}
+					}
+				/*
+				 * Parse error: @font-face declaration value 
+				 */
+				elseif ($c == ":" && $currentState == self::T_FONT_FACE_DECLARATION)
+					{
+					$errorStart	= strrpos($css, "\n", -($l - strrpos($css, ":", -($l - $i + 2))));
+					$errorEnd	= strpos($css, "\n", $errorStart + 1);
+					$errorLine = trim(substr($css, $errorStart, $errorEnd - $errorStart));
+					trigger_error("Line #" . $line . ": Unterminated @font-face declaration:\n<code>" . $errorLine . "_</code>", E_USER_WARNING);
+					}
+				/*
+				 * End of at-rule @font-face block
+				 */
+				elseif ($c == "}" && $currentState == self::T_AT_FONT_FACE)
+					{
+					$r[]		= array(self::T_AT_FONT_FACE_END);
+					$buffer		= "";
+					array_pop($state);
+					}
+				/*
+				 * Start of at-rule @page block
+				 */
+				elseif ($c == "@" && $currentState == self::T_DOCUMENT && strtolower(substr($css, $i, 5)) == "@page")
+					{
+					$r[]		= array(self::T_AT_PAGE_START);
+					$i			= $i + 5;
+					$buffer 	= "";
+					array_push($state, self::T_AT_PAGE);
+					}
+				/*
+				 * @page declaration: Property
+				 */
+				elseif ($c == ":" && $currentState == self::T_AT_PAGE)
+					{
+					$property	= trim($buffer, $sDefaultTrim . ":{");
+					$buffer		= "";
+					array_push($state, self::T_PAGE_DECLARATION);
+					}
+				/*
+				 * @page declaration: Value
+				 */
+				elseif (($c == ";" || $c == "}") && $currentState == self::T_PAGE_DECLARATION)
+					{
+					$value		= trim($buffer, $sDefaultTrim . ";}");
+					$r[]		= array(self::T_PAGE_DECLARATION, $property, $value, $scope);
+					$buffer		= "";
+					array_pop($state);
+					if ($c == "}") // @page declaration closed with a right curly brace => closes @page block
+						{
+						array_pop($state);
+						$r[]	= array(self::T_AT_PAGE_END);
+						}
+					}
+				/*
+				 * 
+				 */
+				elseif ($c == ":" && $currentState == self::T_PAGE_DECLARATION)
+					{
+					$errorStart	= strrpos($css, "\n", -($l - strrpos($css, ":", -($l - $i + 2))));
+					$errorEnd	= strpos($css, "\n", $errorStart + 1);
+					$errorLine	= trim(substr($css, $errorStart, $errorEnd - $errorStart));
+					trigger_error("Line #" . $line . ": Unterminated @page declaration:\n<code>" . $errorLine . "_</code>", E_USER_WARNING);
+					}
+				/*
+				 * End of at-rule @page block
+				 */
+				elseif ($c == "}" && $currentState == self::T_AT_PAGE)
+					{
+					$r[]		= array(self::T_AT_PAGE_END);
+					$buffer		= "";
+					array_pop($state);
+					}
+				/*
+				 * Start of at-rule @variables block
+				 */
+				elseif ($c == "@" && $currentState == self::T_DOCUMENT &&  strtolower(substr($css, $i, 10)) == "@variables")
+					{
+					$i			= $i + 10;
+					$buffer 	= "";
+					array_push($state, self::T_AT_VARIABLES_START);
+					}
+				/*
+				 * @variables media types
+				 */
+				elseif ($c == "{" && $currentState == self::T_AT_VARIABLES_START)
+					{
+					$buffer 	= strtolower(trim($buffer, $sDefaultTrim . "{"));
+					$r[]		= array(self::T_AT_VARIABLES_START, $scope);
+					$scope		= $buffer != "" ? array_filter(array_map("trim", explode(",", $buffer))) : $sDefaultScope;
+					$i			= $i++;
+					$buffer		= "";
+					array_pop($state);
+					array_push($state, self::T_AT_VARIABLES);
+					}
+				/*
+				 * @variables declaration: Property
+				 */
+				elseif ($c == ":" && $currentState == self::T_AT_VARIABLES)
+					{
+					$property	= trim($buffer, $sDefaultTrim . ":");
+					$buffer		= "";
+					array_push($state, self::T_VARIABLE_DECLARATION);
+					}
+				/*
+				 * @variables declaration: Value
+				 */
+				elseif (($c == ";" || $c == "}") && $currentState == self::T_VARIABLE_DECLARATION)
+					{
+					$value		= trim($buffer, $sDefaultTrim . ";}");
+					$r[]		= array(self::T_VARIABLE_DECLARATION, $property, $value, $scope);
+					$buffer		= "";
+					array_pop($state);
+					if ($c == "}") // @variable declaration closed with a right curly brace => closes @variables block
+						{
+						array_pop($state);
+						$r[]	= array(self::T_AT_VARIABLES_END);
+						$scope	= $sDefaultScope;
+						}
+					}
+				/*
+				 * Parse error: @variable declaration value 
+				 */
+				elseif ($c == ":" && $currentState == self::T_VARIABLE_DECLARATION)
+					{
+					$errorStart	= strrpos($css, "\n", -($l - strrpos($css, ":", -($l - $i + 2))));
+					$errorEnd	= strpos($css, "\n", $errorStart + 1);
+					$errorLine	= trim(substr($css, $errorStart, $errorEnd - $errorStart));
+					trigger_error("Line #" . $line . ": Unterminated @variable declaration:\n<code>" . $errorLine . "_</code>", E_USER_WARNING);
+					}
+				/*
+				 * End of at-rule @variables block
+				 */
+				elseif ($c == "}" && $currentState == self::T_AT_VARIABLES)
+					{
+					$r[]		= array(self::T_AT_VARIABLES_END);
+					$scope		= $sDefaultScope;
+					$buffer		= "";
+					array_pop($state);
+					}
+				/*
+				 * Start of at-rule @import
+				 */
+				elseif ($c == "@" && $currentState == self::T_DOCUMENT && strtolower(substr($css, $i, 7)) == "@import")
+					{
+					$i			= $i + 7;
+					$buffer 	= "";
+					array_push($state, self::T_AT_IMPORT);
+					}
+				/*
+				 * End of at-rule @import
+				 */
+				elseif (($c == ";" || $c == "\n") && $currentState == self::T_AT_IMPORT)
+					{
+					$scopes = array_filter(array_map("trim", explode(",", strtolower(trim($buffer, $sDefaultTrim . ";")))));
+					if (stripos($importUrl, "url(") !== false)
+						{
+						$importUrl = rtrim(substr($importUrl, 4), $sDefaultTrim . ")");
+						}
+					$importUrl	= trim($importUrl, $sDefaultTrim . "\"'");
+					$r[]		= array(self::T_AT_IMPORT, $importUrl, $scopes);
+					$buffer 	= "";
+					array_pop($state);
+					}
+				/*
+				 * Start of document level at-rule
+				 */
+				elseif ($c == "@" && $currentState == self::T_DOCUMENT)
+					{
+					$buffer		= "";
+					array_push($state, self::T_AT_RULE);
+					}
+				/*
+				 * End of document level at-rule
+				 */
+				elseif ($c == ";" && $currentState == self::T_AT_RULE)
+					{
+					$pos		= strpos($buffer, " ");
+					$rule		= substr($buffer, 0, $pos);
+					$value		= trim(substr($buffer, $pos), $sDefaultTrim . ";");
+					$r[]		= array(self::T_AT_RULE, $rule, $value);
+					$buffer		= "";
+					array_pop($state);
+					}
+				/**
+				 * Selector
+				 */
+				elseif ($c == "," && ($currentState == self::T_AT_MEDIA || $currentState ==  self::T_DOCUMENT))
+					{
+					$selectors[]= trim($buffer, $sDefaultTrim . ",");
+					$buffer		= "";
+					}
+				/*
+				 * Start of ruleset
+				 */
+				elseif ($c == "{" && ($currentState == self::T_AT_MEDIA || $currentState == self::T_DOCUMENT))
+					{
+					$selectors[]= trim($buffer, $sDefaultTrim . "{");
+					$selectors 	= array_filter(array_map("trim", $selectors));
+					$r[]		= array(self::T_RULESET_START);
+					$r[]		= array(self::T_SELECTORS, $selectors);
+					$r[]		= array(self::T_DECLARATIONS_START);
+					$buffer		= "";
+					$selectors	= array();
+					array_push($state, self::T_DECLARATIONS);
+					}
+				/*
+				 * Declaration: Property
+				 */
+				elseif ($c == ":" && $currentState == self::T_DECLARATIONS)
+					{
+					$property	= trim($buffer, $sDefaultTrim . ":;");
+					$buffer		= "";
+					array_push($state, self::T_DECLARATION);
+					}
+				/*
+				 * Declaration: Value
+				 */
+				elseif (($c == ";" || $c == "}") && $currentState == self::T_DECLARATION)
+					{
+					$value		= trim($buffer, $sDefaultTrim . ";}");
+					$r[]		= array(self::T_DECLARATION, $property, $value, $scope);
+					$buffer		= "";
+					array_pop($state);
+					if ($c == "}") // declaration closed with a right curly brace => close ruleset
+						{
+						array_pop($state);
+						$r[]	= array(self::T_DECLARATIONS_END);
+						$r[]	= array(self::T_RULESET_END);
+						}
+					}
+				/*
+				 * Parse error: declaration value
+				 */
+				elseif ($c == ":" && $currentState == self::T_DECLARATION)
+					{
+					// Fix for Internet Explorer declaration filter as the declaration value conrains a colon (Ex.: progid:DXImageTransform.Microsoft.Alpha(Opacity=85);)
+					if (strpos(strtolower($property), "filter") !== false && strtolower(trim($buffer)) == "progid:")
+						{
+						continue;
+						}
+					$errorStart	= strrpos($css, "\n", -($l - strrpos($css, ":", -($l - $i + 2))));
+					$errorEnd	= strpos($css, "\n", $errorStart + 1);
+					$errorLine	= trim(substr($css, $errorStart, $errorEnd - $errorStart));
+					trigger_error("Line #" . $line . ": Unterminated declaration:\n<code>" . $errorLine . "_</code>", E_USER_WARNING);
+					}
+				/*
+				 * End of ruleset
+				 */
+				elseif ($c == "}" && $currentState == self::T_DECLARATIONS)
+					{
+					$r[]		= array(self::T_DECLARATIONS_END);
+					$r[]		= array(self::T_RULESET_END);
+					$buffer		= "";
+					array_pop($state);
+					}
+				}
+			$p = $c; // Set the parent char
+			}
+		return $r;
+		}
+	/**
+	 * Transforms "opacity: {value}" into browser specific counterparts.
+	 * 
+	 * @param string $property Property
+	 * @param string $value Value
+	 * @return string
+	 */
+	private static function _opacityTransformation($property, $value)
+		{
+		// Calculate the value for Internet Explorer filter statement
+		$ieValue = (int) ((float) $value * 100);
+		$r  = "-moz-opacity:" . $value . ";";						// Firefox < 3.5
+		$r .= "-ms-filter: \"alpha(opacity=" . $ieValue . ")\";";	// Internet Explorer 8
+		$r .= "filter: alpha(opacity=" . $ieValue . ");zoom:1;";	// Internet Explorer 4 - 7
+		return $r;
+		}
+	/**
+	 * Transforms "white-space: pre-wrap" into browser specific counterparts.
+	 * 
+	 * @param string $property Property
+	 * @param string $value Value
+	 * @return string
+	 */
+	private static function _whiteSpacePreWrapTransformation($property, $value)
+		{
+		if (strtolower($value) == "pre-wrap")
+			{
+			$r  = "white-space:-moz-pre-wrap;";		// Mozilla
+			$r .= "white-space:-webkit-pre-wrap;";	// Webkit
+			$r .= "white-space:-pre-wrap;";			// Opera 4 - 6
+			$r .= "white-space:-o-pre-wrap;";		// Opera 7+
+			$r .= "word-wrap:break-word;";			// Internet Explorer 5.5+
+			return $r;
+			}
+		else
+			{
+			return "";
+			}
+		}
+	/**
+	 * Convert a HSL value to hexadecimal notation.
+	 * 
+	 * Based on: {@link http://www.easyrgb.com/index.php?X=MATH&H=19#text19}.
+	 * 
+	 * @param integer $hue Hue
+	 * @param integer $saturation Saturation
+	 * @param integer $lightness Lightnesss
+	 * @return string
+	 */
+	private static function _hsl2hex($hue, $saturation, $lightness)
+		{
+		$hue		= $hue / 360;
+		$saturation	= $saturation / 100;
+		$lightness	= $lightness / 100;
+		if ($saturation == 0)
+			{
+			$red	= $lightness * 255;
+			$green	= $lightness * 255;
+			$blue	= $lightness * 255;
+			}
+		else
+			{
+			if ($lightness < 0.5 )
+				{
+				$v2 = $lightness * (1 + $saturation);
+				}
+			else
+				{
+				$v2 = ($lightness + $saturation) - ($saturation * $lightness);
+				}
+			$v1		= 2 * $lightness - $v2;
+			$red	= 255 * self::_hue2rgb($v1, $v2, $hue + (1 / 3));
+			$green	= 255 * self::_hue2rgb($v1, $v2, $hue);
+			$blue	= 255 * self::_hue2rgb($v1, $v2, $hue - (1 / 3));
+			}
+		return "#" . str_pad(dechex(round($red)), 2, "0", STR_PAD_LEFT) . str_pad(dechex(round($green)), 2, "0", STR_PAD_LEFT) . str_pad(dechex(round($blue)), 2, "0", STR_PAD_LEFT);
+		}
+	/**
+	 * Apply hue to a rgb color value.
+	 * 
+	 * @param integer $v1 Value 1
+	 * @param integer $v2 Value 2
+	 * @param integer $hue Hue
+	 * @return integer
+	 */
+	private static function _hue2rgb($v1, $v2, $hue)
+		{
+		if ($hue < 0)
+			{
+			$hue += 1;
+			}
+		if ($hue > 1)
+			{
+			$hue -= 1;
+			}
+		if ((6 * $hue) < 1)
+			{
+			return ($v1 + ($v2 - $v1) * 6 * $hue);
+			}
+		if ((2 * $hue) < 1)
+			{
+			return ($v2);
+			}
+		if ((3 * $hue) < 2)
+			{
+			return ($v1 + ($v2 - $v1) * (( 2 / 3) - $hue) * 6);
+			}
+		return $v1;
+		}
+	}
diff --git a/src/libraries/external/JSMin/JSMin.php b/src/libraries/external/JSMin/JSMin.php
new file mode 100644
index 000000000..e79f8dbc3
--- /dev/null
+++ b/src/libraries/external/JSMin/JSMin.php
@@ -0,0 +1,374 @@
+<?php
+/**
+ * jsmin.php - PHP implementation of Douglas Crockford's JSMin.
+ *
+ * This is pretty much a direct port of jsmin.c to PHP with just a few
+ * PHP-specific performance tweaks. Also, whereas jsmin.c reads from stdin and
+ * outputs to stdout, this library accepts a string as input and returns another
+ * string as output.
+ *
+ * PHP 5 or higher is required.
+ *
+ * Permission is hereby granted to use this version of the library under the
+ * same terms as jsmin.c, which has the following license:
+ *
+ * --
+ * Copyright (c) 2002 Douglas Crockford  (www.crockford.com)
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy of
+ * this software and associated documentation files (the "Software"), to deal in
+ * the Software without restriction, including without limitation the rights to
+ * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
+ * of the Software, and to permit persons to whom the Software is furnished to do
+ * so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * The Software shall be used for Good, not Evil.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ * --
+ *
+ * @package JSMin
+ * @author Ryan Grove <ryan@wonko.com>
+ * @copyright 2002 Douglas Crockford <douglas@crockford.com> (jsmin.c)
+ * @copyright 2008 Ryan Grove <ryan@wonko.com> (PHP port)
+ * @license http://opensource.org/licenses/mit-license.php MIT License
+ * @version 1.1.1 (2008-03-02)
+ * @link https://github.com/rgrove/jsmin-php/
+ */
+
+class JSMin {
+  const ORD_LF            = 10;
+  const ORD_SPACE         = 32;
+  const ACTION_KEEP_A     = 1;
+  const ACTION_DELETE_A   = 2;
+  const ACTION_DELETE_A_B = 3;
+
+  protected $a           = '';
+  protected $b           = '';
+  protected $input       = '';
+  protected $inputIndex  = 0;
+  protected $inputLength = 0;
+  protected $lookAhead   = null;
+  protected $output      = '';
+
+  // -- Public Static Methods --------------------------------------------------
+
+  /**
+   * Minify Javascript
+   *
+   * @uses __construct()
+   * @uses min()
+   * @param string $js Javascript to be minified
+   * @return string
+   */
+  public static function minify($js) {
+    $jsmin = new JSMin($js);
+    return $jsmin->min();
+  }
+
+  // -- Public Instance Methods ------------------------------------------------
+
+  /**
+   * Constructor
+   *
+   * @param string $input Javascript to be minified
+   */
+  public function __construct($input) {
+    $this->input       = str_replace("\r\n", "\n", $input);
+    $this->inputLength = strlen($this->input);
+  }
+
+  // -- Protected Instance Methods ---------------------------------------------
+
+  /**
+   * Action -- do something! What to do is determined by the $command argument.
+   *
+   * action treats a string as a single character. Wow!
+   * action recognizes a regular expression if it is preceded by ( or , or =.
+   *
+   * @uses next()
+   * @uses get()
+   * @throws JSMinException If parser errors are found:
+   *         - Unterminated string literal
+   *         - Unterminated regular expression set in regex literal
+   *         - Unterminated regular expression literal
+   * @param int $command One of class constants:
+   *      ACTION_KEEP_A      Output A. Copy B to A. Get the next B.
+   *      ACTION_DELETE_A    Copy B to A. Get the next B. (Delete A).
+   *      ACTION_DELETE_A_B  Get the next B. (Delete B).
+  */
+  protected function action($command) {
+    switch($command) {
+      case self::ACTION_KEEP_A:
+        $this->output .= $this->a;
+
+      case self::ACTION_DELETE_A:
+        $this->a = $this->b;
+
+        if ($this->a === "'" || $this->a === '"') {
+          for (;;) {
+            $this->output .= $this->a;
+            $this->a       = $this->get();
+
+            if ($this->a === $this->b) {
+              break;
+            }
+
+            if (ord($this->a) <= self::ORD_LF) {
+              throw new JSMinException('Unterminated string literal.');
+            }
+
+            if ($this->a === '\\') {
+              $this->output .= $this->a;
+              $this->a       = $this->get();
+            }
+          }
+        }
+
+      case self::ACTION_DELETE_A_B:
+        $this->b = $this->next();
+
+        if ($this->b === '/' && (
+            $this->a === '(' || $this->a === ',' || $this->a === '=' ||
+            $this->a === ':' || $this->a === '[' || $this->a === '!' ||
+            $this->a === '&' || $this->a === '|' || $this->a === '?' ||
+            $this->a === '{' || $this->a === '}' || $this->a === ';' ||
+            $this->a === "\n" )) {
+
+          $this->output .= $this->a . $this->b;
+
+          for (;;) {
+            $this->a = $this->get();
+
+            if ($this->a === '[') {
+              /*
+                inside a regex [...] set, which MAY contain a '/' itself. Example: mootools Form.Validator near line 460:
+                  return Form.Validator.getValidator('IsEmpty').test(element) || (/^(?:[a-z0-9!#$%&'*+/=?^_`{|}~-]\.?){0,63}[a-z0-9!#$%&'*+/=?^_`{|}~-]@(?:(?:[a-z0-9](?:[a-z0-9-]{0,61}[a-z0-9])?\.)*[a-z0-9](?:[a-z0-9-]{0,61}[a-z0-9])?|\[(?:(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.){3}(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\])$/i).test(element.get('value'));
+              */
+              for (;;) {
+                $this->output .= $this->a;
+                $this->a = $this->get();
+
+                if ($this->a === ']') {
+                    break;
+                } elseif ($this->a === '\\') {
+                  $this->output .= $this->a;
+                  $this->a       = $this->get();
+                } elseif (ord($this->a) <= self::ORD_LF) {
+                  throw new JSMinException('Unterminated regular expression set in regex literal.');
+                }
+              }
+            } elseif ($this->a === '/') {
+              break;
+            } elseif ($this->a === '\\') {
+              $this->output .= $this->a;
+              $this->a       = $this->get();
+            } elseif (ord($this->a) <= self::ORD_LF) {
+              throw new JSMinException('Unterminated regular expression literal.');
+            }
+
+            $this->output .= $this->a;
+          }
+
+          $this->b = $this->next();
+        }
+    }
+  }
+
+  /**
+   * Get next char. Convert ctrl char to space.
+   *
+   * @return string|null
+   */
+  protected function get() {
+    $c = $this->lookAhead;
+    $this->lookAhead = null;
+
+    if ($c === null) {
+      if ($this->inputIndex < $this->inputLength) {
+        $c = substr($this->input, $this->inputIndex, 1);
+        $this->inputIndex += 1;
+      } else {
+        $c = null;
+      }
+    }
+
+    if ($c === "\r") {
+      return "\n";
+    }
+
+    if ($c === null || $c === "\n" || ord($c) >= self::ORD_SPACE) {
+      return $c;
+    }
+
+    return ' ';
+  }
+
+  /**
+   * Is $c a letter, digit, underscore, dollar sign, or non-ASCII character.
+   *
+   * @return bool
+   */
+  protected function isAlphaNum($c) {
+    return ord($c) > 126 || $c === '\\' || preg_match('/^[\w\$]$/', $c) === 1;
+  }
+
+  /**
+   * Perform minification, return result
+   *
+   * @uses action()
+   * @uses isAlphaNum()
+   * @return string
+   */
+  protected function min() {
+    $this->a = "\n";
+    $this->action(self::ACTION_DELETE_A_B);
+
+    while ($this->a !== null) {
+      switch ($this->a) {
+        case ' ':
+          if ($this->isAlphaNum($this->b)) {
+            $this->action(self::ACTION_KEEP_A);
+          } else {
+            $this->action(self::ACTION_DELETE_A);
+          }
+          break;
+
+        case "\n":
+          switch ($this->b) {
+            case '{':
+            case '[':
+            case '(':
+            case '+':
+            case '-':
+              $this->action(self::ACTION_KEEP_A);
+              break;
+
+            case ' ':
+              $this->action(self::ACTION_DELETE_A_B);
+              break;
+
+            default:
+              if ($this->isAlphaNum($this->b)) {
+                $this->action(self::ACTION_KEEP_A);
+              }
+              else {
+                $this->action(self::ACTION_DELETE_A);
+              }
+          }
+          break;
+
+        default:
+          switch ($this->b) {
+            case ' ':
+              if ($this->isAlphaNum($this->a)) {
+                $this->action(self::ACTION_KEEP_A);
+                break;
+              }
+
+              $this->action(self::ACTION_DELETE_A_B);
+              break;
+
+            case "\n":
+              switch ($this->a) {
+                case '}':
+                case ']':
+                case ')':
+                case '+':
+                case '-':
+                case '"':
+                case "'":
+                  $this->action(self::ACTION_KEEP_A);
+                  break;
+
+                default:
+                  if ($this->isAlphaNum($this->a)) {
+                    $this->action(self::ACTION_KEEP_A);
+                  }
+                  else {
+                    $this->action(self::ACTION_DELETE_A_B);
+                  }
+              }
+              break;
+
+            default:
+              $this->action(self::ACTION_KEEP_A);
+              break;
+          }
+      }
+    }
+
+    return $this->output;
+  }
+
+  /**
+   * Get the next character, skipping over comments. peek() is used to see
+   *  if a '/' is followed by a '/' or '*'.
+   *
+   * @uses get()
+   * @uses peek()
+   * @throws JSMinException On unterminated comment.
+   * @return string
+   */
+  protected function next() {
+    $c = $this->get();
+
+    if ($c === '/') {
+      switch($this->peek()) {
+        case '/':
+          for (;;) {
+            $c = $this->get();
+
+            if (ord($c) <= self::ORD_LF) {
+              return $c;
+            }
+          }
+
+        case '*':
+          $this->get();
+
+          for (;;) {
+            switch($this->get()) {
+              case '*':
+                if ($this->peek() === '/') {
+                  $this->get();
+                  return ' ';
+                }
+                break;
+
+              case null:
+                throw new JSMinException('Unterminated comment.');
+            }
+          }
+
+        default:
+          return $c;
+      }
+    }
+
+    return $c;
+  }
+
+  /**
+   * Get next char. If is ctrl character, translate to a space or newline.
+   *
+   * @uses get()
+   * @return string|null
+   */
+  protected function peek() {
+    $this->lookAhead = $this->get();
+    return $this->lookAhead;
+  }
+}
+
+// -- Exceptions ---------------------------------------------------------------
+class JSMinException extends Exception {}
diff --git a/src/libraries/models/AssetPipeline.php b/src/libraries/models/AssetPipeline.php
new file mode 100644
index 000000000..2d9d4cd1d
--- /dev/null
+++ b/src/libraries/models/AssetPipeline.php
@@ -0,0 +1,112 @@
+<?php
+/**
+ * AssetPipeline model.
+ *
+ * This handles pipelining static assets.
+ * JS and CSS are combined, minified and cached.
+ *
+ * @author Jaisen Mathai <jaisen@jmathai.com>
+ */
+class AssetPipeline
+{
+  const css = 'css';
+  const js = 'js';
+  const minified = 'm';
+  const combined = 'c';
+  private $assets, $assetsRel, $docroot, $cacheDir, $mode;
+
+  public function __construct()
+  {
+    $this->docroot = getConfig()->get('paths')->docroot;
+    $this->cacheDir = sprintf('%s/assets/cache', $this->docroot);;
+    $this->assets = $this->assetsRel = array('js' => array(), 'css' => array());
+    $siteMode = getConfig()->get('site')->mode;
+    if($siteMode === 'prod')
+      $this->mode = self::minified;
+    else
+      $this->mode = self::combined;
+  }
+
+  public function getCombined($type)
+  {
+    $retval = '';
+    $files = $this->assets[$type];
+    foreach($files as $file)
+      $retval .= ($type === self::css ? $this->normalizeUrls($file) : file_get_contents($file)) . "\n";
+
+    return $retval;
+  }
+
+  public function getMinified($type)
+  {
+    $retval = '';
+    $files = $this->assets[$type];
+    foreach($files as $file)
+      $retval .= ($type === self::css ? /*CssMin::minify($this->normalizeUrls($file))*/ $this->normalizeUrls($file) : JSMin::minify(file_get_contents($file))) . "\n";
+
+    return $retval;
+
+  }
+
+  public function getUrl($type, $version = 'a')
+  {
+    $url = sprintf('/assets/cache/%s/%s/%s%s', $version, $type, $this->mode, implode(',', $this->assetsRel[$type]));
+    $hash = sha1($url);
+    if(is_dir($this->cacheDir) && file_exists($assetPath = sprintf('%s/%s.%s', $this->cacheDir, $hash, $type)))
+      return str_replace($this->docroot, '', $assetPath);
+
+    
+    if(is_dir($this->cacheDir) && is_writable($this->cacheDir))
+    {
+      $contents = $this->mode === self::minified ? $this->getMinified($type) : $this->getCombined($type);
+      file_put_contents($assetPath, $contents);
+    }
+    
+    return $url;
+  }
+
+  public function addCss($src)
+  {
+    if(file_exists($path = sprintf('%s%s', $this->docroot, $src)))
+      $this->addAsset($path, 'css');
+    return $this;
+  }
+
+  public function addJs($src)
+  {
+    if(file_exists($path = sprintf('%s%s', $this->docroot, $src)))
+      $this->addAsset($path, 'js');
+
+    return $this;
+  }
+
+  private function addAsset($src, $type)
+  {
+    // verify this file exists
+    if(file_exists($src))
+    {
+      $this->assets[$type][] = $src;
+      $this->assetsRel[$type][] = str_replace($this->docroot, '', $src);
+    }
+  }
+
+  private function normalizeUrls($file)
+  {
+    $contents = file_get_contents($file);
+    $pathToFile = str_replace($this->docroot, '', dirname($file));
+    return str_replace('../', "{$pathToFile}/../", $contents);
+  }
+}
+
+function getAssetPipeline($new = false)
+{
+  if($new)
+    return new AssetPipeline;
+
+  static $assetPipeline;
+  if($assetPipeline)
+    return $assetPipeline;
+
+  $assetPipeline = new AssetPipeline;
+  return $assetPipeline;
+}
diff --git a/src/libraries/models/Theme.php b/src/libraries/models/Theme.php
index a5968eddd..32929b596 100644
--- a/src/libraries/models/Theme.php
+++ b/src/libraries/models/Theme.php
@@ -30,29 +30,29 @@ public function __construct()
     $this->themeDirWeb = str_replace(sprintf('%s/html', dirname(dirname(dirname(__FILE__)))), '', $this->themeDir);
   }
 
-  public function asset($type, $filename = '')
+  public function asset($type, $filename = '', $write = true)
   {
     $filename = "/{$filename}";
     switch($type)
     {
       case 'base':
-        echo "{$this->themeDirWeb}{$filename}";
+        return Utility::returnValue("{$this->themeDirWeb}{$filename}", $write);
         break;
       case 'image':
-        echo "{$this->themeDirWeb}/images{$filename}";
+        return Utility::returnValue("{$this->themeDirWeb}/images{$filename}", $write);
         break;
       case 'javascript':
-        echo "{$this->themeDirWeb}/javascripts{$filename}";
+        return Utility::returnValue("{$this->themeDirWeb}/javascripts{$filename}", $write);
         break;
       case 'stylesheet':
-        echo "{$this->themeDirWeb}/stylesheets{$filename}";
+        return Utility::returnValue("{$this->themeDirWeb}/stylesheets{$filename}", $write);
         break;
       //
       case 'jquery':
-        echo '/assets/javascripts/jquery-1.6.2.min.js';
+        return Utility::returnValue('/assets/javascripts/jquery-1.6.2.min.js', $write);
         break;
       case 'util':
-        echo '/assets/javascripts/openphoto-util.js';
+        return Utility::returnValue('/assets/javascripts/openphoto-util.js', $write);
         break;
     }
   }
diff --git a/src/libraries/routes.php b/src/libraries/routes.php
index 180c6de61..701303f0a 100644
--- a/src/libraries/routes.php
+++ b/src/libraries/routes.php
@@ -6,15 +6,13 @@
  */
 getRoute()->get('/', array('GeneralController', 'home'));
 
-
-
 /*
- * Action endpoints
- * All action endpoints follow the same convention.
+ * Asset endpoints
+ * All asset endpoints follow the same convention.
  * Everything in []'s are optional
- * /action/{id}[/{additional}]
+ * /assets/cache/:version/:type/:file[,:file]
  */
-getRoute()->post('/action/([a-zA-Z0-9]+)/(photo)/create', array('ActionController', 'create'), EpiApi::external); // post an action
+getRoute()->get('/assets/cache/[^/]+/(js|css)/(c|m)(/.+)', array('AssetsController', 'get'));
 
 
 /*