diff --git a/external/flashcanvas.js b/external/flashcanvas.js
new file mode 100644
index 000000000..710829cbb
--- /dev/null
+++ b/external/flashcanvas.js
@@ -0,0 +1,1194 @@
+/*
+ * FlashCanvas
+ *
+ * Copyright (c) 2009      Tim Cameron Ryan
+ * Copyright (c) 2009-2011 FlashCanvas Project
+ * Released under the MIT/X License
+ */
+
+// Reference:
+//   http://www.whatwg.org/specs/web-apps/current-work/multipage/the-canvas-element.html
+//   http://dev.w3.org/html5/spec/the-canvas-element.html
+
+// If the browser is IE and does not support HTML5 Canvas
+if (window["ActiveXObject"] && !window["CanvasRenderingContext2D"]) {
+
+    (function(window, document, undefined) {
+
+        /*
+ * Constant
+ */
+
+        var NULL                        = null;
+        var CANVAS                      = "canvas";
+        var CANVAS_RENDERING_CONTEXT_2D = "CanvasRenderingContext2D";
+        var CANVAS_GRADIENT             = "CanvasGradient";
+        var CANVAS_PATTERN              = "CanvasPattern";
+        var FLASH_CANVAS                = "FlashCanvas";
+        var G_VML_CANVAS_MANAGER        = "G_vmlCanvasManager";
+        var OBJECT_ID_PREFIX            = "external";
+        var ON_FOCUS                    = "onfocus";
+        var ON_PROPERTY_CHANGE          = "onpropertychange";
+        var ON_READY_STATE_CHANGE       = "onreadystatechange";
+        var ON_UNLOAD                   = "onunload";
+
+        var config   = window[FLASH_CANVAS + "Options"] || {};
+        var BASE_URL = config["swfPath"] || getScriptUrl().replace(/[^\/]+$/, "");
+        var SWF_URL  = BASE_URL + "flashcanvas.swf";
+
+        // DOMException code
+        var INDEX_SIZE_ERR              =  1;
+        var NOT_SUPPORTED_ERR           =  9;
+        var INVALID_STATE_ERR           = 11;
+        var SYNTAX_ERR                  = 12;
+        var TYPE_MISMATCH_ERR           = 17;
+        var SECURITY_ERR                = 18;
+
+        /**
+ * @constructor
+ */
+        function Lookup(array) {
+            for (var i = 0, n = array.length; i < n; i++)
+                this[array[i]] = i;
+        }
+
+        var properties = new Lookup([
+            // Canvas element
+            "toDataURL",
+
+            // CanvasRenderingContext2D
+            "save",
+            "restore",
+            "scale",
+            "rotate",
+            "translate",
+            "transform",
+            "setTransform",
+            "globalAlpha",
+            "globalCompositeOperation",
+            "strokeStyle",
+            "fillStyle",
+            "createLinearGradient",
+            "createRadialGradient",
+            "createPattern",
+            "lineWidth",
+            "lineCap",
+            "lineJoin",
+            "miterLimit",
+            "shadowOffsetX",
+            "shadowOffsetY",
+            "shadowBlur",
+            "shadowColor",
+            "clearRect",
+            "fillRect",
+            "strokeRect",
+            "beginPath",
+            "closePath",
+            "moveTo",
+            "lineTo",
+            "quadraticCurveTo",
+            "bezierCurveTo",
+            "arcTo",
+            "rect",
+            "arc",
+            "fill",
+            "stroke",
+            "clip",
+            "isPointInPath",
+            //  "drawFocusRing",
+            "font",
+            "textAlign",
+            "textBaseline",
+            "fillText",
+            "strokeText",
+            "measureText",
+            "drawImage",
+            "createImageData",
+            "getImageData",
+            "putImageData",
+
+            // CanvasGradient
+            "addColorStop",
+
+            // Internal use
+            "direction",
+            "resize"
+            ]);
+
+        // Whether swf is ready for use
+        var isReady = {};
+
+        // Cache of images loaded by createPattern() or drawImage()
+        var images = {};
+
+        // Monitor the number of loading files
+        var lock = {};
+
+        // Callback functions passed to loadImage()
+        var callbacks = {};
+
+        // Canvas elements
+        var canvases = {};
+
+        // SPAN element embedded in the canvas
+        var spans = {};
+
+        /**
+ * 2D context
+ * @constructor
+ */
+        var CanvasRenderingContext2D = function(canvas, swf) {
+            // back-reference to the canvas
+            this.canvas = canvas;
+
+            // back-reference to the swf
+            this._swf = swf;
+
+            // unique ID of canvas
+            this._canvasId = swf.id.slice(8);
+
+            // initialize drawing states
+            this._initialize();
+
+            // Count CanvasGradient and CanvasPattern objects
+            this._gradientPatternId = 0;
+
+            // Directionality of the canvas element
+            this._direction = "";
+
+            // This ensures that font properties of the canvas element is
+            // transmitted to Flash.
+            this._font = "";
+
+            // frame update interval
+            var self = this;
+            setInterval(function() {
+                if (lock[self._canvasId] === 0) {
+                    self._executeCommand();
+                }
+            }, 30);
+        };
+
+        CanvasRenderingContext2D.prototype = {
+            /*
+     * state
+     */
+
+            save: function() {
+                // write all properties
+                this._setCompositing();
+                this._setShadows();
+                this._setStrokeStyle();
+                this._setFillStyle();
+                this._setLineStyles();
+                this._setFontStyles();
+
+                // push state
+                this._stateStack.push([
+                    this._globalAlpha,
+                    this._globalCompositeOperation,
+                    this._strokeStyle,
+                    this._fillStyle,
+                    this._lineWidth,
+                    this._lineCap,
+                    this._lineJoin,
+                    this._miterLimit,
+                    this._shadowOffsetX,
+                    this._shadowOffsetY,
+                    this._shadowBlur,
+                    this._shadowColor,
+                    this._font,
+                    this._textAlign,
+                    this._textBaseline
+                    ]);
+
+                this._queue.push(properties.save);
+            },
+
+            restore: function() {
+                // pop state
+                var stateStack = this._stateStack;
+                if (stateStack.length) {
+                    var state = stateStack.pop();
+                    this.globalAlpha              = state[0];
+                    this.globalCompositeOperation = state[1];
+                    this.strokeStyle              = state[2];
+                    this.fillStyle                = state[3];
+                    this.lineWidth                = state[4];
+                    this.lineCap                  = state[5];
+                    this.lineJoin                 = state[6];
+                    this.miterLimit               = state[7];
+                    this.shadowOffsetX            = state[8];
+                    this.shadowOffsetY            = state[9];
+                    this.shadowBlur               = state[10];
+                    this.shadowColor              = state[11];
+                    this.font                     = state[12];
+                    this.textAlign                = state[13];
+                    this.textBaseline             = state[14];
+                }
+
+                this._queue.push(properties.restore);
+            },
+
+            /*
+     * transformations
+     */
+
+            scale: function(x, y) {
+                this._queue.push(properties.scale, x, y);
+            },
+
+            rotate: function(angle) {
+                this._queue.push(properties.rotate, angle);
+            },
+
+            translate: function(x, y) {
+                this._queue.push(properties.translate, x, y);
+            },
+
+            transform: function(m11, m12, m21, m22, dx, dy) {
+                this._queue.push(properties.transform, m11, m12, m21, m22, dx, dy);
+            },
+
+            setTransform: function(m11, m12, m21, m22, dx, dy) {
+                this._queue.push(properties.setTransform, m11, m12, m21, m22, dx, dy);
+            },
+
+            /*
+     * compositing
+     */
+
+            _setCompositing: function() {
+                var queue = this._queue;
+                if (this._globalAlpha !== this.globalAlpha) {
+                    this._globalAlpha = this.globalAlpha;
+                    queue.push(properties.globalAlpha, this._globalAlpha);
+                }
+                if (this._globalCompositeOperation !== this.globalCompositeOperation) {
+                    this._globalCompositeOperation = this.globalCompositeOperation;
+                    queue.push(properties.globalCompositeOperation, this._globalCompositeOperation);
+                }
+            },
+
+            /*
+     * colors and styles
+     */
+
+            _setStrokeStyle: function() {
+                if (this._strokeStyle !== this.strokeStyle) {
+                    var style = this._strokeStyle = this.strokeStyle;
+                    if (typeof style === "string") {
+                    // OK
+                    } else if (style instanceof CanvasGradient ||
+                        style instanceof CanvasPattern) {
+                        style = style.id;
+                    } else {
+                        return;
+                    }
+                    this._queue.push(properties.strokeStyle, style);
+                }
+            },
+
+            _setFillStyle: function() {
+                if (this._fillStyle !== this.fillStyle) {
+                    var style = this._fillStyle = this.fillStyle;
+                    if (typeof style === "string") {
+                    // OK
+                    } else if (style instanceof CanvasGradient ||
+                        style instanceof CanvasPattern) {
+                        style = style.id;
+                    } else {
+                        return;
+                    }
+                    this._queue.push(properties.fillStyle, style);
+                }
+            },
+
+            createLinearGradient: function(x0, y0, x1, y1) {
+                // If any of the arguments are not finite numbers, throws a
+                // NOT_SUPPORTED_ERR exception.
+                if (!(isFinite(x0) && isFinite(y0) && isFinite(x1) && isFinite(y1))) {
+                    throwException(NOT_SUPPORTED_ERR);
+                }
+
+                this._queue.push(properties.createLinearGradient, x0, y0, x1, y1);
+                return new CanvasGradient(this);
+            },
+
+            createRadialGradient: function(x0, y0, r0, x1, y1, r1) {
+                // If any of the arguments are not finite numbers, throws a
+                // NOT_SUPPORTED_ERR exception.
+                if (!(isFinite(x0) && isFinite(y0) && isFinite(r0) &&
+                    isFinite(x1) && isFinite(y1) && isFinite(r1))) {
+                    throwException(NOT_SUPPORTED_ERR);
+                }
+
+                // If either of the radii are negative, throws an INDEX_SIZE_ERR
+                // exception.
+                if (r0 < 0 || r1 < 0) {
+                    throwException(INDEX_SIZE_ERR);
+                }
+
+                this._queue.push(properties.createRadialGradient, x0, y0, r0, x1, y1, r1);
+                return new CanvasGradient(this);
+            },
+
+            createPattern: function(image, repetition) {
+                // If the image is null, the implementation must raise a
+                // TYPE_MISMATCH_ERR exception.
+                if (!image) {
+                    throwException(TYPE_MISMATCH_ERR);
+                }
+
+                var tagName = image.tagName, src;
+                var canvasId = this._canvasId;
+
+                // If the first argument isn't an img, canvas, or video element,
+                // throws a TYPE_MISMATCH_ERR exception.
+                if (tagName) {
+                    tagName = tagName.toLowerCase();
+                    if (tagName === "img") {
+                        src = image.getAttribute("src", 2);
+                    } else if (tagName === CANVAS || tagName === "video") {
+                        // For now, only HTMLImageElement is supported.
+                        return;
+                    } else {
+                        throwException(TYPE_MISMATCH_ERR);
+                    }
+                }
+
+                // Additionally, we accept any object that has a src property.
+                // This is useful when you'd like to specify a long data URI.
+                else if (image.src) {
+                    src = image.src;
+                } else {
+                    throwException(TYPE_MISMATCH_ERR);
+                }
+
+                // If the second argument isn't one of the allowed values, throws a
+                // SYNTAX_ERR exception.
+                if (!(repetition === "repeat"   || repetition === "no-repeat" ||
+                    repetition === "repeat-x" || repetition === "repeat-y"  ||
+                    repetition === ""         || repetition === NULL)) {
+                    throwException(SYNTAX_ERR);
+                }
+
+                // Special characters in the filename need escaping.
+                this._queue.push(properties.createPattern, encodeXML(src), repetition);
+
+                // If this is the first time to access the URL, the canvas should be
+                // locked while the image is being loaded asynchronously.
+                if (!images[canvasId][src] && isReady[canvasId]) {
+                    this._executeCommand();
+                    ++lock[canvasId];
+                    images[canvasId][src] = true;
+                }
+
+                return new CanvasPattern(this);
+            },
+
+            /*
+     * line caps/joins
+     */
+
+            _setLineStyles: function() {
+                var queue = this._queue;
+                if (this._lineWidth !== this.lineWidth) {
+                    this._lineWidth = this.lineWidth;
+                    queue.push(properties.lineWidth, this._lineWidth);
+                }
+                if (this._lineCap !== this.lineCap) {
+                    this._lineCap = this.lineCap;
+                    queue.push(properties.lineCap, this._lineCap);
+                }
+                if (this._lineJoin !== this.lineJoin) {
+                    this._lineJoin = this.lineJoin;
+                    queue.push(properties.lineJoin, this._lineJoin);
+                }
+                if (this._miterLimit !== this.miterLimit) {
+                    this._miterLimit = this.miterLimit;
+                    queue.push(properties.miterLimit, this._miterLimit);
+                }
+            },
+
+            /*
+     * shadows
+     */
+
+            _setShadows: function() {
+                var queue = this._queue;
+                if (this._shadowOffsetX !== this.shadowOffsetX) {
+                    this._shadowOffsetX = this.shadowOffsetX;
+                    queue.push(properties.shadowOffsetX, this._shadowOffsetX);
+                }
+                if (this._shadowOffsetY !== this.shadowOffsetY) {
+                    this._shadowOffsetY = this.shadowOffsetY;
+                    queue.push(properties.shadowOffsetY, this._shadowOffsetY);
+                }
+                if (this._shadowBlur !== this.shadowBlur) {
+                    this._shadowBlur = this.shadowBlur;
+                    queue.push(properties.shadowBlur, this._shadowBlur);
+                }
+                if (this._shadowColor !== this.shadowColor) {
+                    this._shadowColor = this.shadowColor;
+                    queue.push(properties.shadowColor, this._shadowColor);
+                }
+            },
+
+            /*
+     * rects
+     */
+
+            clearRect: function(x, y, w, h) {
+                this._queue.push(properties.clearRect, x, y, w, h);
+            },
+
+            fillRect: function(x, y, w, h) {
+                this._setCompositing();
+                this._setShadows();
+                this._setFillStyle();
+                this._queue.push(properties.fillRect, x, y, w, h);
+            },
+
+            strokeRect: function(x, y, w, h) {
+                this._setCompositing();
+                this._setShadows();
+                this._setStrokeStyle();
+                this._setLineStyles();
+                this._queue.push(properties.strokeRect, x, y, w, h);
+            },
+
+            /*
+     * path API
+     */
+
+            beginPath: function() {
+                this._queue.push(properties.beginPath);
+            },
+
+            closePath: function() {
+                this._queue.push(properties.closePath);
+            },
+
+            moveTo: function(x, y) {
+                this._queue.push(properties.moveTo, x, y);
+            },
+
+            lineTo: function(x, y) {
+                this._queue.push(properties.lineTo, x, y);
+            },
+
+            quadraticCurveTo: function(cpx, cpy, x, y) {
+                this._queue.push(properties.quadraticCurveTo, cpx, cpy, x, y);
+            },
+
+            bezierCurveTo: function(cp1x, cp1y, cp2x, cp2y, x, y) {
+                this._queue.push(properties.bezierCurveTo, cp1x, cp1y, cp2x, cp2y, x, y);
+            },
+
+            arcTo: function(x1, y1, x2, y2, radius) {
+                // Throws an INDEX_SIZE_ERR exception if the given radius is negative.
+                if (radius < 0 && isFinite(radius)) {
+                    throwException(INDEX_SIZE_ERR);
+                }
+
+                this._queue.push(properties.arcTo, x1, y1, x2, y2, radius);
+            },
+
+            rect: function(x, y, w, h) {
+                this._queue.push(properties.rect, x, y, w, h);
+            },
+
+            arc: function(x, y, radius, startAngle, endAngle, anticlockwise) {
+                // Throws an INDEX_SIZE_ERR exception if the given radius is negative.
+                if (radius < 0 && isFinite(radius)) {
+                    throwException(INDEX_SIZE_ERR);
+                }
+
+                this._queue.push(properties.arc, x, y, radius, startAngle, endAngle, anticlockwise ? 1 : 0);
+            },
+
+            fill: function() {
+                this._setCompositing();
+                this._setShadows();
+                this._setFillStyle();
+                this._queue.push(properties.fill);
+            },
+
+            stroke: function() {
+                this._setCompositing();
+                this._setShadows();
+                this._setStrokeStyle();
+                this._setLineStyles();
+                this._queue.push(properties.stroke);
+            },
+
+            clip: function() {
+                this._queue.push(properties.clip);
+            },
+
+            isPointInPath: function(x, y) {
+            // TODO: Implement
+            },
+
+            /*
+     * text
+     */
+
+            _setFontStyles: function() {
+                var queue = this._queue;
+                if (this._font !== this.font) {
+                    try {
+                        var span = spans[this._canvasId];
+                        span.style.font = this._font = this.font;
+
+                        var style = span.currentStyle;
+                        var fontSize = span.offsetHeight;
+                        var font = [style.fontStyle, style.fontWeight, fontSize, style.fontFamily].join(" ");
+                        queue.push(properties.font, font);
+                    } catch(e) {
+                    // If this.font cannot be parsed as a CSS font value, then it
+                    // must be ignored.
+                    }
+                }
+                if (this._textAlign !== this.textAlign) {
+                    this._textAlign = this.textAlign;
+                    queue.push(properties.textAlign, this._textAlign);
+                }
+                if (this._textBaseline !== this.textBaseline) {
+                    this._textBaseline = this.textBaseline;
+                    queue.push(properties.textBaseline, this._textBaseline);
+                }
+                if (this._direction !== this.canvas.currentStyle.direction) {
+                    this._direction = this.canvas.currentStyle.direction;
+                    queue.push(properties.direction, this._direction);
+                }
+            },
+
+            fillText: function(text, x, y, maxWidth) {
+                this._setCompositing();
+                this._setFillStyle();
+                this._setShadows();
+                this._setFontStyles();
+                this._queue.push(properties.fillText, encodeXML(text), x, y,
+                    maxWidth === undefined ? Infinity : maxWidth);
+            },
+
+            strokeText: function(text, x, y, maxWidth) {
+                this._setCompositing();
+                this._setStrokeStyle();
+                this._setShadows();
+                this._setFontStyles();
+                this._queue.push(properties.strokeText, encodeXML(text), x, y,
+                    maxWidth === undefined ? Infinity : maxWidth);
+            },
+
+            measureText: function(text) {
+                var span = spans[this._canvasId];
+                try {
+                    span.style.font = this.font;
+                } catch(e) {
+                // If this.font cannot be parsed as a CSS font value, then it must
+                // be ignored.
+                }
+
+                // Replace space characters with tab characters because innerText
+                // removes trailing white spaces.
+                span.innerText = text.replace(/[ \n\f\r]/g, "\t");
+
+                return new TextMetrics(span.offsetWidth);
+            },
+
+            /*
+     * drawing images
+     */
+
+            drawImage: function(image, x1, y1, w1, h1, x2, y2, w2, h2) {
+                // If the image is null, the implementation must raise a
+                // TYPE_MISMATCH_ERR exception.
+               
+                if (!image) {
+                    throwException(TYPE_MISMATCH_ERR);
+                }
+
+                var tagName = image.tagName, src, argc = arguments.length;
+                var canvasId = this._canvasId;
+
+                // If the first argument isn't an img, canvas, or video element,
+                // throws a TYPE_MISMATCH_ERR exception.
+                if (tagName) {
+                    tagName = tagName.toLowerCase();
+                    if (tagName === "img") {
+                        src = image.getAttribute("src", 2);
+                    } else if (tagName === CANVAS || tagName === "video") {
+                        // For now, only HTMLImageElement is supported.
+                        return;
+                    } else {
+                        throwException(TYPE_MISMATCH_ERR);
+                    }
+                }
+
+                // Additionally, we accept any object that has a src property.
+                // This is useful when you'd like to specify a long data URI.
+                else if (image.src) {
+                    src = image.src;
+                } else {
+                    throwException(TYPE_MISMATCH_ERR);
+                }
+
+                this._setCompositing();
+                this._setShadows();
+
+                // Special characters in the filename need escaping.
+                src = encodeXML(src);
+                
+                if (argc === 3) {
+                    this._queue.push(properties.drawImage, argc, src, x1, y1);
+                } else if (argc === 5) {
+                    this._queue.push(properties.drawImage, argc, src, x1, y1, w1, h1);
+                } else if (argc === 9) {
+                    // If one of the sw or sh arguments is zero, the implementation
+                    // must raise an INDEX_SIZE_ERR exception.
+                    if (w1 === 0 || h1 === 0) {
+                        throwException(INDEX_SIZE_ERR);
+                    }
+
+                    this._queue.push(properties.drawImage, argc, src, x1, y1, w1, h1, x2, y2, w2, h2);
+                } else {
+                    return;
+                }
+
+                // If this is the first time to access the URL, the canvas should be
+                // locked while the image is being loaded asynchronously.
+                if (!images[canvasId][src] && isReady[canvasId]) {
+                    this._executeCommand();
+                    ++lock[canvasId];
+                    images[canvasId][src] = true;
+                }
+            },
+
+            /*
+     * pixel manipulation
+     */
+
+            // ImageData createImageData(in float sw, in float sh);
+            // ImageData createImageData(in ImageData imagedata);
+            createImageData: function() {
+            // TODO: Implement
+            },
+
+            // ImageData getImageData(in float sx, in float sy, in float sw, in float sh);
+            getImageData: function(sx, sy, sw, sh) {
+            // TODO: Implement
+            },
+
+            // void putImageData(in ImageData imagedata, in float dx, in float dy, [Optional] in float dirtyX, in float dirtyY, in float dirtyWidth, in float dirtyHeight);
+            putImageData: function(imagedata, dx, dy, dirtyX, dirtyY, dirtyWidth, dirtyHeight) {
+            // TODO: Implement
+            },
+
+            /*
+     * extended functions
+     */
+
+            loadImage: function(image, onload, onerror) {
+                var tagName = image.tagName, src;
+                var canvasId = this._canvasId;
+
+                // Get the URL of the image.
+                if (tagName) {
+                    if (tagName.toLowerCase() === "img") {
+                        src = image.getAttribute("src", 2);
+                    }
+                } else if (image.src) {
+                    src = image.src;
+                }
+
+                // Do nothing in the following cases:
+                //  - The first argument is neither an img element nor an object
+                //    with a src property,
+                //  - The image has been already cached.
+                if (!src || images[canvasId][src]) {
+                    return;
+                }
+
+                // Store the objects.
+                if (onload || onerror) {
+                    callbacks[canvasId][src] = [image, onload, onerror];
+                }
+
+                // Load the image without drawing.
+                this._queue.push(properties.drawImage, 1, encodeXML(src));
+
+                // Execute the command immediately if possible.
+                if (isReady[canvasId]) {
+                    this._executeCommand();
+                    ++lock[canvasId];
+                    images[canvasId][src] = true;
+                }
+            },
+
+            /*
+     * private methods
+     */
+
+            _initialize: function() {
+                // compositing
+                this.globalAlpha = this._globalAlpha = 1.0;
+                this.globalCompositeOperation = this._globalCompositeOperation = "source-over";
+
+                // colors and styles
+                this.strokeStyle = this._strokeStyle = "#000000";
+                this.fillStyle   = this._fillStyle   = "#000000";
+
+                // line caps/joins
+                this.lineWidth  = this._lineWidth  = 1.0;
+                this.lineCap    = this._lineCap    = "butt";
+                this.lineJoin   = this._lineJoin   = "miter";
+                this.miterLimit = this._miterLimit = 10.0;
+
+                // shadows
+                this.shadowOffsetX = this._shadowOffsetX = 0;
+                this.shadowOffsetY = this._shadowOffsetY = 0;
+                this.shadowBlur    = this._shadowBlur    = 0;
+                this.shadowColor   = this._shadowColor   = "rgba(0, 0, 0, 0.0)";
+
+                // text
+                this.font         = this._font         = "10px sans-serif";
+                this.textAlign    = this._textAlign    = "start";
+                this.textBaseline = this._textBaseline = "alphabetic";
+
+                // command queue
+                this._queue = [];
+
+                // stack of drawing states
+                this._stateStack = [];
+            },
+
+            _flush: function() {
+                var queue = this._queue;
+                this._queue = [];
+                return queue;
+            },
+
+            _executeCommand: function() {
+                // execute commands
+                var commands = this._flush();
+                if (commands.length > 0) {
+                    return eval(this._swf.CallFunction(
+                        '<invoke name="executeCommand" returntype="javascript"><arguments><string>'
+                        + commands.join("&#0;") + "</string></arguments></invoke>"
+                        ));
+                }
+            },
+
+            _resize: function(width, height) {
+                // Flush commands in the queue
+                this._executeCommand();
+
+                // Clear back to the initial state
+                this._initialize();
+
+                // Adjust the size of Flash to that of the canvas
+                if (width > 0) {
+                    this._swf.width = width;
+                }
+                if (height > 0) {
+                    this._swf.height = height;
+                }
+
+                // Execute a resize command at the start of the next frame
+                this._queue.push(properties.resize, width, height);
+            }
+        };
+
+        /**
+ * CanvasGradient stub
+ * @constructor
+ */
+        var CanvasGradient = function(ctx) {
+            this._ctx = ctx;
+            this.id   = ctx._gradientPatternId++;
+        };
+
+        CanvasGradient.prototype = {
+            addColorStop: function(offset, color) {
+                // Throws an INDEX_SIZE_ERR exception if the offset is out of range.
+                if (isNaN(offset) || offset < 0 || offset > 1) {
+                    throwException(INDEX_SIZE_ERR);
+                }
+
+                this._ctx._queue.push(properties.addColorStop, this.id, offset, color);
+            }
+        };
+
+        /**
+ * CanvasPattern stub
+ * @constructor
+ */
+        var CanvasPattern = function(ctx) {
+            this.id = ctx._gradientPatternId++;
+        };
+
+        /**
+ * TextMetrics stub
+ * @constructor
+ */
+        var TextMetrics = function(width) {
+            this.width = width;
+        };
+
+        /**
+ * DOMException
+ * @constructor
+ */
+        var DOMException = function(code) {
+            this.code    = code;
+            this.message = DOMExceptionNames[code];
+        };
+
+        DOMException.prototype = new Error;
+
+        var DOMExceptionNames = {
+            1:  "INDEX_SIZE_ERR",
+            9:  "NOT_SUPPORTED_ERR",
+            11: "INVALID_STATE_ERR",
+            12: "SYNTAX_ERR",
+            17: "TYPE_MISMATCH_ERR",
+            18: "SECURITY_ERR"
+        };
+
+        /*
+ * Event handlers
+ */
+
+        function onReadyStateChange() {
+            if (document.readyState === "complete") {
+                document.detachEvent(ON_READY_STATE_CHANGE, onReadyStateChange);
+
+                var canvases = document.getElementsByTagName(CANVAS);
+                for (var i = 0, n = canvases.length; i < n; ++i) {
+                    FlashCanvas.initElement(canvases[i]);
+                }
+            }
+        }
+
+        function onFocus() {
+            // forward the event to the parent
+            var swf = event.srcElement, canvas = swf.parentNode;
+            swf.blur();
+            canvas.focus();
+        }
+
+        function onPropertyChange() {
+            var prop = event.propertyName;
+            if (prop === "width" || prop === "height") {
+                var canvas = event.srcElement;
+                var value  = canvas[prop];
+                var number = parseInt(value, 10);
+
+                if (isNaN(number) || number < 0) {
+                    number = (prop === "width") ? 300 : 150;
+                }
+
+                if (value === number) {
+                    canvas.style[prop] = number + "px";
+                    canvas.getContext("2d")._resize(canvas.width, canvas.height);
+                } else {
+                    canvas[prop] = number;
+                }
+            }
+        }
+
+        function onUnload() {
+            window.detachEvent(ON_UNLOAD, onUnload);
+
+            for (var canvasId in canvases) {
+                var canvas = canvases[canvasId], swf = canvas.firstChild, prop;
+
+                // clean up the references of swf.executeCommand and swf.resize
+                for (prop in swf) {
+                    if (typeof swf[prop] === "function") {
+                        swf[prop] = NULL;
+                    }
+                }
+
+                // clean up the references of canvas.getContext and canvas.toDataURL
+                for (prop in canvas) {
+                    if (typeof canvas[prop] === "function") {
+                        canvas[prop] = NULL;
+                    }
+                }
+
+                // remove event listeners
+                swf.detachEvent(ON_FOCUS, onFocus);
+                canvas.detachEvent(ON_PROPERTY_CHANGE, onPropertyChange);
+            }
+
+            // delete exported symbols
+            window[CANVAS_RENDERING_CONTEXT_2D] = NULL;
+            window[CANVAS_GRADIENT]             = NULL;
+            window[CANVAS_PATTERN]              = NULL;
+            window[FLASH_CANVAS]                = NULL;
+            window[G_VML_CANVAS_MANAGER]        = NULL;
+        }
+
+        /*
+ * FlashCanvas API
+ */
+
+        var FlashCanvas = {
+            initElement: function(canvas) {
+                // Check whether the initialization is required or not.
+                if (canvas.getContext) {
+                    return canvas;
+                }
+
+                // initialize lock
+                var canvasId        = getUniqueId();
+                var objectId        = OBJECT_ID_PREFIX + canvasId;
+                isReady[canvasId]   = false;
+                images[canvasId]    = {};
+                lock[canvasId]      = 1;
+                callbacks[canvasId] = {};
+
+                // Set the width and height attributes.
+                setCanvasSize(canvas);
+
+                // embed swf and SPAN element
+                canvas.innerHTML =
+                '<object classid="clsid:d27cdb6e-ae6d-11cf-96b8-444553540000"' +
+                ' codebase="' + location.protocol + '//fpdownload.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=9,0,0,0"' +
+                ' width="100%" height="100%" id="' + objectId + '">' +
+                '<param name="allowScriptAccess" value="always">' +
+                '<param name="flashvars" value="id=' + objectId + '">' +
+                '<param name="wmode" value="transparent">' +
+                '</object>' +
+                '<span style="margin:0;padding:0;border:0;display:inline-block;position:static;height:1em;overflow:visible;white-space:nowrap">' +
+                '</span>';
+
+                canvases[canvasId] = canvas;
+                var swf            = canvas.firstChild;
+                spans[canvasId]    = canvas.lastChild;
+
+                // Check whether the canvas element is in the DOM tree
+                var documentContains = document.body.contains;
+                if (documentContains(canvas)) {
+                    // Load swf file immediately
+                    swf["movie"] = SWF_URL;
+                } else {
+                    // Wait until the element is added to the DOM tree
+                    var intervalId = setInterval(function() {
+                        if (documentContains(canvas)) {
+                            clearInterval(intervalId);
+                            swf["movie"] = SWF_URL;
+                        }
+                    }, 0);
+                }
+
+                // If the browser is IE6 or in quirks mode
+                if (document.compatMode === "BackCompat" || !window.XMLHttpRequest) {
+                    spans[canvasId].style.overflow = "hidden";
+                }
+
+                // initialize context
+                var ctx = new CanvasRenderingContext2D(canvas, swf);
+
+                // canvas API
+                canvas.getContext = function(contextId) {
+                    return contextId === "2d" ? ctx : NULL;
+                };
+
+                canvas.toDataURL = function(type, quality) {
+                    if (("" + type).replace(/[A-Z]+/g, toLowerCase) === "image/jpeg") {
+                        ctx._queue.push(properties.toDataURL, type,
+                            typeof quality === "number" ? quality : "");
+                    } else {
+                        ctx._queue.push(properties.toDataURL, type);
+                    }
+                    return ctx._executeCommand();
+                };
+
+                // add event listener
+                swf.attachEvent(ON_FOCUS, onFocus);
+
+                return canvas;
+            },
+
+            saveImage: function(canvas) {
+                var swf = canvas.firstChild;
+                swf.saveImage();
+            },
+
+            setOptions: function(options) {
+            // TODO: Implement
+            },
+
+            trigger: function(canvasId, type) {
+                var canvas = canvases[canvasId];
+                canvas.fireEvent("on" + type);
+            },
+
+            unlock: function(canvasId, url, error) {
+                var canvas, swf, width, height;
+                var _callback, image, callback;
+
+                if (lock[canvasId]) {
+                    --lock[canvasId];
+                }
+
+                // If Flash becomes ready
+                if (url === undefined) {
+                    canvas = canvases[canvasId];
+                    swf    = canvas.firstChild;
+
+                    // Set the width and height attributes of the canvas element.
+                    setCanvasSize(canvas);
+                    width  = canvas.width;
+                    height = canvas.height;
+
+                    canvas.style.width  = width  + "px";
+                    canvas.style.height = height + "px";
+
+                    // Adjust the size of Flash to that of the canvas
+                    if (width > 0) {
+                        swf.width = width;
+                    }
+                    if (height > 0) {
+                        swf.height = height;
+                    }
+                    swf.resize(width, height);
+
+                    // Add event listener
+                    canvas.attachEvent(ON_PROPERTY_CHANGE, onPropertyChange);
+
+                    // ExternalInterface is now ready for use
+                    isReady[canvasId] = true;
+
+                    // Call the onload event handler
+                    if (typeof canvas.onload === "function") {
+                        setTimeout(function() {
+                            canvas.onload();
+                        }, 0);
+                    }
+                }
+
+                // If callback functions were defined
+                else if (_callback = callbacks[canvasId][url]) {
+                    image    = _callback[0];
+                    callback = _callback[1 + error];
+                    delete callbacks[canvasId][url];
+
+                    // Call the onload or onerror callback function.
+                    if (typeof callback === "function") {
+                        callback.call(image);
+                    }
+                }
+            }
+        };
+
+        /*
+ * Utility methods
+ */
+
+        // Get the absolute URL of flashcanvas.js
+        function getScriptUrl() {
+            var scripts = document.getElementsByTagName("script");
+            var script  = scripts[scripts.length - 1];
+
+            // @see http://msdn.microsoft.com/en-us/library/ms536429(VS.85).aspx
+            if (document.documentMode >= 8) {
+                return script.src;
+            } else {
+                return script.getAttribute("src", 4);
+            }
+        }
+
+        // Get a unique ID composed of alphanumeric characters.
+        function getUniqueId() {
+            return Math.random().toString(36).slice(2) || "0";
+        }
+
+        // Escape characters not permitted in XML.
+        function encodeXML(str) {
+            return ("" + str).replace(/&/g, "&amp;").replace(/</g, "&lt;");
+        }
+
+        function toLowerCase(str) {
+            return str.toLowerCase();
+        }
+
+        function throwException(code) {
+            throw new DOMException(code);
+        }
+
+        // The width and height attributes of a canvas element must have values that
+        // are valid non-negative integers.
+        function setCanvasSize(canvas) {
+            var width  = parseInt(canvas.width, 10);
+            var height = parseInt(canvas.height, 10);
+
+            if (isNaN(width) || width < 0) {
+                width = 300;
+            }
+            if (isNaN(height) || height < 0) {
+                height = 150;
+            }
+
+            canvas.width  = width;
+            canvas.height = height;
+        }
+
+        /*
+ * initialization
+ */
+
+        // IE HTML5 shiv
+        document.createElement(CANVAS);
+
+        // setup default CSS
+        document.createStyleSheet().cssText =
+        CANVAS + "{display:inline-block;overflow:hidden;width:300px;height:150px}";
+
+        // initialize canvas elements
+        if (document.readyState === "complete") {
+            onReadyStateChange();
+        } else {
+            document.attachEvent(ON_READY_STATE_CHANGE, onReadyStateChange);
+        }
+
+        // prevent IE6 memory leaks
+        window.attachEvent(ON_UNLOAD, onUnload);
+
+        // preload SWF file if it's in the same domain
+        if (SWF_URL.indexOf(location.protocol + "//" + location.host + "/") === 0) {
+            var req = new ActiveXObject("Microsoft.XMLHTTP");
+            req.open("GET", SWF_URL, false);
+            req.send(NULL);
+        }
+
+        /*
+ * public API
+ */
+
+        window[CANVAS_RENDERING_CONTEXT_2D] = CanvasRenderingContext2D;
+        window[CANVAS_GRADIENT]             = CanvasGradient;
+        window[CANVAS_PATTERN]              = CanvasPattern;
+        window[FLASH_CANVAS]                = FlashCanvas;
+
+        // ExplorerCanvas-compatible APIs for convenience
+        window[G_VML_CANVAS_MANAGER] = {
+            init:  function(){},
+            init_: function(){},
+            initElement: FlashCanvas.initElement
+        };
+
+        // Prevent Closure Compiler from removing the function.
+        keep = [
+        CanvasRenderingContext2D.measureText,
+        CanvasRenderingContext2D.loadImage
+        ];
+
+    })(window, document);
+
+}
\ No newline at end of file
diff --git a/external/flashcanvas.min.js b/external/flashcanvas.min.js
new file mode 100644
index 000000000..dc0eee006
--- /dev/null
+++ b/external/flashcanvas.min.js
@@ -0,0 +1,28 @@
+/*
+ * FlashCanvas
+ *
+ * Copyright (c) 2009      Tim Cameron Ryan
+ * Copyright (c) 2009-2011 FlashCanvas Project
+ * Released under the MIT/X License
+ */
+window.ActiveXObject&&!window.CanvasRenderingContext2D&&function(h,j){function D(a){this.code=a;this.message=T[a]}function U(a){this.width=a}function E(a){this.id=a.C++}function t(a){this.G=a;this.id=a.C++}function u(a,b){this.canvas=a;this.B=b;this.d=a.uniqueID;this.D();this.C=0;this.t="";var c=this;setInterval(function(){n[c.d]===0&&c.e()},30)}function A(){if(j.readyState==="complete"){j.detachEvent(F,A);for(var a=j.getElementsByTagName(r),b=0,c=a.length;b<c;++b)B.initElement(a[b])}}function G(){var a=
+event.srcElement,b=a.parentNode;a.blur();b.focus()}function H(){var a=event.propertyName;if(a==="width"||a==="height"){var b=event.srcElement,c=b[a],d=parseInt(c,10);if(isNaN(d)||d<0)d=a==="width"?300:150;if(c===d){b.style[a]=d+"px";b.getContext("2d").I(b.width,b.height)}else b[a]=d}}function I(){h.detachEvent(J,I);for(var a in s){var b=s[a],c=b.firstChild,d;for(d in c)if(typeof c[d]==="function")c[d]=k;for(d in b)if(typeof b[d]==="function")b[d]=k;c.detachEvent(K,G);b.detachEvent(L,H)}h[M]=k;h[N]=
+k;h[O]=k;h[C]=k;h[P]=k}function V(){var a=j.getElementsByTagName("script");a=a[a.length-1];return j.documentMode>=8?a.src:a.getAttribute("src",4)}function v(a){return(""+a).replace(/&/g,"&amp;").replace(/</g,"&lt;")}function W(a){return a.toLowerCase()}function i(a){throw new D(a);}function Q(a){var b=parseInt(a.width,10),c=parseInt(a.height,10);if(isNaN(b)||b<0)b=300;if(isNaN(c)||c<0)c=150;a.width=b;a.height=c}var k=null,r="canvas",M="CanvasRenderingContext2D",N="CanvasGradient",O="CanvasPattern",
+C="FlashCanvas",P="G_vmlCanvasManager",K="onfocus",L="onpropertychange",F="onreadystatechange",J="onunload",w=((h[C+"Options"]||{}).swfPath||V().replace(/[^\/]+$/,""))+"flashcanvas.swf",e=new function(a){for(var b=0,c=a.length;b<c;b++)this[a[b]]=b}(["toDataURL","save","restore","scale","rotate","translate","transform","setTransform","globalAlpha","globalCompositeOperation","strokeStyle","fillStyle","createLinearGradient","createRadialGradient","createPattern","lineWidth","lineCap","lineJoin","miterLimit",
+"shadowOffsetX","shadowOffsetY","shadowBlur","shadowColor","clearRect","fillRect","strokeRect","beginPath","closePath","moveTo","lineTo","quadraticCurveTo","bezierCurveTo","arcTo","rect","arc","fill","stroke","clip","isPointInPath","font","textAlign","textBaseline","fillText","strokeText","measureText","drawImage","createImageData","getImageData","putImageData","addColorStop","direction","resize"]),x={},n={},s={},y={};u.prototype={save:function(){this.b();this.c();this.m();this.l();this.z();this.w();
+this.F.push([this.f,this.g,this.A,this.u,this.j,this.h,this.i,this.k,this.p,this.q,this.n,this.o,this.v,this.r,this.s]);this.a.push(e.save)},restore:function(){var a=this.F;if(a.length){a=a.pop();this.globalAlpha=a[0];this.globalCompositeOperation=a[1];this.strokeStyle=a[2];this.fillStyle=a[3];this.lineWidth=a[4];this.lineCap=a[5];this.lineJoin=a[6];this.miterLimit=a[7];this.shadowOffsetX=a[8];this.shadowOffsetY=a[9];this.shadowBlur=a[10];this.shadowColor=a[11];this.font=a[12];this.textAlign=a[13];
+this.textBaseline=a[14]}this.a.push(e.restore)},scale:function(a,b){this.a.push(e.scale,a,b)},rotate:function(a){this.a.push(e.rotate,a)},translate:function(a,b){this.a.push(e.translate,a,b)},transform:function(a,b,c,d,f,g){this.a.push(e.transform,a,b,c,d,f,g)},setTransform:function(a,b,c,d,f,g){this.a.push(e.setTransform,a,b,c,d,f,g)},b:function(){var a=this.a;if(this.f!==this.globalAlpha){this.f=this.globalAlpha;a.push(e.globalAlpha,this.f)}if(this.g!==this.globalCompositeOperation){this.g=this.globalCompositeOperation;
+a.push(e.globalCompositeOperation,this.g)}},m:function(){if(this.A!==this.strokeStyle){var a=this.A=this.strokeStyle;this.a.push(e.strokeStyle,typeof a==="object"?a.id:a)}},l:function(){if(this.u!==this.fillStyle){var a=this.u=this.fillStyle;this.a.push(e.fillStyle,typeof a==="object"?a.id:a)}},createLinearGradient:function(a,b,c,d){isFinite(a)&&isFinite(b)&&isFinite(c)&&isFinite(d)||i(9);this.a.push(e.createLinearGradient,a,b,c,d);return new t(this)},createRadialGradient:function(a,b,c,d,f,g){isFinite(a)&&
+isFinite(b)&&isFinite(c)&&isFinite(d)&&isFinite(f)&&isFinite(g)||i(9);if(c<0||g<0)i(1);this.a.push(e.createRadialGradient,a,b,c,d,f,g);return new t(this)},createPattern:function(a,b){a||i(17);var c=a.tagName,d,f=this.d;if(c){c=c.toLowerCase();if(c==="img")d=a.getAttribute("src",2);else if(c===r||c==="video")return;else i(17)}else if(a.src)d=a.src;else i(17);b==="repeat"||b==="no-repeat"||b==="repeat-x"||b==="repeat-y"||b===""||b===k||i(12);this.a.push(e.createPattern,v(d),b);if(x[f]){this.e();++n[f]}return new E(this)},
+z:function(){var a=this.a;if(this.j!==this.lineWidth){this.j=this.lineWidth;a.push(e.lineWidth,this.j)}if(this.h!==this.lineCap){this.h=this.lineCap;a.push(e.lineCap,this.h)}if(this.i!==this.lineJoin){this.i=this.lineJoin;a.push(e.lineJoin,this.i)}if(this.k!==this.miterLimit){this.k=this.miterLimit;a.push(e.miterLimit,this.k)}},c:function(){var a=this.a;if(this.p!==this.shadowOffsetX){this.p=this.shadowOffsetX;a.push(e.shadowOffsetX,this.p)}if(this.q!==this.shadowOffsetY){this.q=this.shadowOffsetY;
+a.push(e.shadowOffsetY,this.q)}if(this.n!==this.shadowBlur){this.n=this.shadowBlur;a.push(e.shadowBlur,this.n)}if(this.o!==this.shadowColor){this.o=this.shadowColor;a.push(e.shadowColor,this.o)}},clearRect:function(a,b,c,d){this.a.push(e.clearRect,a,b,c,d)},fillRect:function(a,b,c,d){this.b();this.c();this.l();this.a.push(e.fillRect,a,b,c,d)},strokeRect:function(a,b,c,d){this.b();this.c();this.m();this.z();this.a.push(e.strokeRect,a,b,c,d)},beginPath:function(){this.a.push(e.beginPath)},closePath:function(){this.a.push(e.closePath)},
+moveTo:function(a,b){this.a.push(e.moveTo,a,b)},lineTo:function(a,b){this.a.push(e.lineTo,a,b)},quadraticCurveTo:function(a,b,c,d){this.a.push(e.quadraticCurveTo,a,b,c,d)},bezierCurveTo:function(a,b,c,d,f,g){this.a.push(e.bezierCurveTo,a,b,c,d,f,g)},arcTo:function(a,b,c,d,f){f<0&&isFinite(f)&&i(1);this.a.push(e.arcTo,a,b,c,d,f)},rect:function(a,b,c,d){this.a.push(e.rect,a,b,c,d)},arc:function(a,b,c,d,f,g){c<0&&isFinite(c)&&i(1);this.a.push(e.arc,a,b,c,d,f,g?1:0)},fill:function(){this.b();this.c();
+this.l();this.a.push(e.fill)},stroke:function(){this.b();this.c();this.m();this.z();this.a.push(e.stroke)},clip:function(){this.a.push(e.clip)},w:function(){var a=this.a;if(this.v!==this.font)try{var b=y[this.d];b.style.font=this.v=this.font;var c=b.currentStyle;a.push(e.font,[c.fontStyle,c.fontWeight,b.offsetHeight,c.fontFamily].join(" "))}catch(d){}if(this.r!==this.textAlign){this.r=this.textAlign;a.push(e.textAlign,this.r)}if(this.s!==this.textBaseline){this.s=this.textBaseline;a.push(e.textBaseline,
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