diff --git a/src/javascript/plupload.flash.js b/src/javascript/plupload.flash.js
index 872ca9f5c..54b4d133b 100644
--- a/src/javascript/plupload.flash.js
+++ b/src/javascript/plupload.flash.js
@@ -153,16 +153,16 @@
 			browseButton = flashContainer = null;
 
 			// Wait for Flash to send init event
-			uploader.bind("Flash:Init", function() {
-								
+			uploader.bind("Flash:Init", function() {	
 				var lookup = {}, i, resize = uploader.settings.resize || {};
-				
+
 				getFlashObj().setFileFilters(uploader.settings.filters, uploader.settings.multi_selection);
-				
+
 				// Prevent eventual reinitialization of the instance
-				if (initialized[uploader.id])
+				if (initialized[uploader.id]) {
 					return;
-				
+				}
+
 				initialized[uploader.id] = true;
 
 				uploader.bind("UploadFile", function(up, file) {
diff --git a/src/javascript/plupload.html4.js b/src/javascript/plupload.html4.js
index cae28f4e6..f46f14cbf 100644
--- a/src/javascript/plupload.html4.js
+++ b/src/javascript/plupload.html4.js
@@ -301,20 +301,22 @@
 						// for IE and WebKit place input element underneath the browse button and route onclick event 
 						// TODO: revise when browser support for this feature will change
 						if (up.features.canOpenDialog) {
-							pzIndex = parseInt(browseButton.parentNode.style.zIndex);
-							if (isNaN(pzIndex))
+							pzIndex = parseInt(browseButton.parentNode.style.zIndex, 10);
+
+							if (isNaN(pzIndex)) {
 								pzIndex = 0;
-								
+							}
+
 							plupload.extend(browseButton.style, {
 								position : 'relative',
 								zIndex : pzIndex
 							});
-												
+
 							plupload.extend(inputContainer.style, {
 								zIndex : pzIndex - 1
 							});
 						}
-						
+
 						/* Since we have to place input[type=file] on top of the browse_button for some browsers (FF, Opera),
 						browse_button loses interactivity, here we try to neutralize this issue highlighting browse_button
 						with a special class
@@ -360,11 +362,11 @@
 				uploader.bind("Destroy", function(up) {
 					var name, element, form,
 						elements = {
-							inputContainer: 'form_' + currentFileId, 
-							inputFile: 		'input_' + currentFileId, 			
-							browseButton:	up.settings.browse_button 
+							inputContainer: 'form_' + currentFileId,
+							inputFile: 'input_' + currentFileId,	
+							browseButton: up.settings.browse_button
 						};
-					
+
 					// Unbind event handlers
 					for (name in elements) {
 						element = getById(elements[name]);
diff --git a/src/javascript/plupload.html5.js b/src/javascript/plupload.html5.js
index 85d6c1552..9d468d211 100644
--- a/src/javascript/plupload.html5.js
+++ b/src/javascript/plupload.html5.js
@@ -9,7 +9,7 @@
  */
 
 // JSLint defined globals
-/*global plupload:false, File:false, window:false, atob:false, FormData:false, FileReader:false */
+/*global plupload:false, File:false, window:false, atob:false, FormData:false, FileReader:false, ArrayBuffer:false, Uint8Array:false, BlobBuilder:false, unescape:false */
 
 (function(window, document, plupload, undef) {
 	var fakeSafariDragDrop, ExifParser;
@@ -122,7 +122,7 @@
 					bb.append(data);
 					blob = bb.getBlob();
 					this.send(blob);
-				}
+				};
 			}
 
 			if (win.XMLHttpRequest) {
@@ -204,7 +204,7 @@
 			}
 
 			uploader.bind("Init", function(up) {
-				var inputContainer, browseButton, mimes = [], i, y, filters = up.settings.filters, ext, type, container = document.body;
+				var inputContainer, browseButton, mimes = [], i, y, filters = up.settings.filters, ext, type, container = document.body, inputFile;
 
 				// Create input container and insert it at an absolute position within the browse button
 				inputContainer = document.createElement('div');
@@ -384,9 +384,11 @@
 					// for IE and WebKit place input element underneath the browse button and route onclick event 
 					// TODO: revise when browser support for this feature will change
 					if (uploader.features.canOpenDialog) {
-						pzIndex = parseInt(browseButton.parentNode.style.zIndex);
-						if (isNaN(pzIndex))
+						pzIndex = parseInt(browseButton.parentNode.style.zIndex, 10);
+	
+						if (isNaN(pzIndex)) {
 							pzIndex = 0;
+						}
 							
 						plupload.extend(browseButton.style, {
 							position : 'relative',
@@ -615,12 +617,12 @@
 			uploader.bind('Destroy', function(up) {
 				var name, element, container = document.body,
 					elements = {
-						inputContainer: up.id + '_html5_container', 
-						inputFile: 		up.id + '_html5', 			
-						browseButton:	up.settings.browse_button, 
-						dropElm:		up.settings.drop_element	
+						inputContainer: up.id + '_html5_container',
+						inputFile: up.id + '_html5',
+						browseButton: up.settings.browse_button,
+						dropElm: up.settings.drop_element
 					};
-				
+
 				// Unbind event handlers
 				for (name in elements) {
 					element = document.getElementById(elements[name]);
@@ -635,7 +637,7 @@
 				}
 				
 				// Remove mark-up
-				container.removeChild(document.getElementById(elements['inputContainer']));
+				container.removeChild(document.getElementById(elements.inputContainer));
 			});
 
 			callback({success : true});
diff --git a/src/javascript/plupload.js b/src/javascript/plupload.js
index 741397484..175af3640 100644
--- a/src/javascript/plupload.js
+++ b/src/javascript/plupload.js
@@ -543,10 +543,15 @@
 		 * @param {Object} obj DOM element like object to add handler to.
 		 * @param {String} name Class name
 		 */
-		hasClass : function(obj, name) {			
-			if (obj.className == '') return false;
-			
-			var regExp = new RegExp("(^|\\s+)"+name+"(\\s+|$)");
+		hasClass : function(obj, name) {
+			var regExp;
+		
+			if (obj.className == '') {
+				return false;
+			}
+
+			regExp = new RegExp("(^|\\s+)"+name+"(\\s+|$)");
+
 			return regExp.test(obj.className);
 		},
 		
@@ -569,9 +574,10 @@
 		 * @param {String} name Class name
 		 */
 		removeClass : function(obj, name) {
-			var regExp = new RegExp("(^|\\s+)"+name+"(\\s+|$)");			
+			var regExp = new RegExp("(^|\\s+)"+name+"(\\s+|$)");
+			
 			obj.className = obj.className.replace(regExp, function($0, $1, $2) {
-				return $1 == ' ' && $2 == ' ' ? ' ' : '';
+				return $1 === ' ' && $2 === ' ' ? ' ' : '';
 			});
 		},
 		
@@ -594,9 +600,10 @@
 			name = name.toLowerCase();
 						
 			// Initialize unique identifier if needed
-			if (uid === undef)
+			if (uid === undef) {
 				uid = 'Plupload_' + plupload.guid();
-			
+			}
+
 			// Add event listener
 			if (obj.attachEvent) {
 				
diff --git a/src/javascript/plupload.silverlight.js b/src/javascript/plupload.silverlight.js
index d89ce72a2..3341a7893 100644
--- a/src/javascript/plupload.silverlight.js
+++ b/src/javascript/plupload.silverlight.js
@@ -235,8 +235,9 @@
 				var selectedFiles, lookup = {};
 				
 				// Prevent eventual reinitialization of the instance
-				if (initialized[uploader.id])
+				if (initialized[uploader.id]) {
 					return;
+				}
 					
 				initialized[uploader.id] = true;