diff --git a/couchpotato/static/scripts/library/mootools_tween_css3.js b/couchpotato/static/scripts/library/mootools_tween_css3.js
index 6e2e0786..8f6460b4 100644
--- a/couchpotato/static/scripts/library/mootools_tween_css3.js
+++ b/couchpotato/static/scripts/library/mootools_tween_css3.js
@@ -16,9 +16,10 @@ provides: [Fx.Tween]
 Element.NativeEvents.transitionend = 2;
 Element.NativeEvents.webkitTransitionEnd = 2;
 Element.NativeEvents.oTransitionEnd = 2;
+Element.NativeEvents.msTransitionEnd = 2;
 
 Element.Events.transitionend = {
-	base: Browser.safari || Browser.chrome ? 'webkitTransitionEnd' : (Browser.opera ? 'oTransitionEnd' : 'transitionend')
+	base: Browser.safari || Browser.chrome ? 'webkitTransitionEnd' : (Browser.opera ? 'oTransitionEnd' : (Browser.ie && Browser.version > 8 ? 'msTransitionEnd' : 'transitionend'))
 };
 
 Event.implement({
@@ -37,12 +38,12 @@ Element.implement({
 	
 	supportStyle: function(style){
 		var value = this.style[style];
-		return !!(value || value == '');
+		return !!(value || value === '');
 	},
 
 	supportVendorStyle: function(style){
 		var prefixedStyle = null;
-		return this.supportStyle(style) ? style : ['webkit', 'Moz', 'o'].some(function(prefix){
+		return this.supportStyle(style) ? style : ['webkit', 'Moz', 'o', 'ms'].some(function(prefix){
 			prefixedStyle = prefix + style.capitalize();
 			return this.supportStyle(prefixedStyle);
 		}, this) ? prefixedStyle : null;
@@ -107,21 +108,21 @@ Fx.Tween = new Class({
 				if (event.getPropertyName() == this.property /* && event.getElapsedTime() == this.options.duration */ ){
 					this.element.removeEvent('transitionend', this.boundComplete);
 					this.boundComplete = null;
-					this.fireEvent('complete', this.subject);
+					this.fireEvent('complete', this);
 				}
 			}.bind(this);
 			this.element.addEvent('transitionend', this.boundComplete);
 			var trans = function(){
 				this.element.setStyle(this.transition, this.property + ' ' + this.options.duration + 'ms cubic-bezier(' + this.transitionTimings[this.options.transition] + ')');
-				this.element.setStyle(this.property, this.to[0].value +  + this.options.unit);
+				this.element.setStyle(this.property, this.to[0].value + this.options.unit);
 			}.bind(this);
 			if (args[1]){
 				this.element.setStyle(this.transition, 'none');
-				this.element.setStyle(this.property, this.from[0].value +  + this.options.unit);
+				this.element.setStyle(this.property, this.from[0].value + this.options.unit);
 				trans.delay(0.1);
 			} else
 				trans();
-			this.fireEvent('start', this.subject);
+            this.fireEvent('start', this);
 			return this;
 		}
 		return this.parent(property, from, to);
@@ -137,4 +138,4 @@ Fx.Tween = new Class({
 		return this;
 	}
 
-});
\ No newline at end of file
+});