diff --git a/actionpack/CHANGELOG b/actionpack/CHANGELOG
index fad162052a..97396e8d28 100644
--- a/actionpack/CHANGELOG
+++ b/actionpack/CHANGELOG
@@ -1,5 +1,7 @@
 *SVN*
 
+* Update to script.aculo.us 1.7.0.  [Thomas Fuchs]
+
 * Modernize cookie testing code, and increase coverage (Heckle++) #7101 [Kevin Clark]
 
 * Improve Test Coverage for ActionController::Routing::Route#matches_controller_and_action? (Heckle++) #7115 [Kevin Clark]
diff --git a/actionpack/lib/action_view/helpers/javascripts/dragdrop.js b/actionpack/lib/action_view/helpers/javascripts/dragdrop.js
index c71ddb8274..7ee9a5f317 100644
--- a/actionpack/lib/action_view/helpers/javascripts/dragdrop.js
+++ b/actionpack/lib/action_view/helpers/javascripts/dragdrop.js
@@ -303,12 +303,12 @@ Draggable.prototype = {
     if(Event.isLeftClick(event)) {    
       // abort on form elements, fixes a Firefox issue
       var src = Event.element(event);
-      if(src.tagName && (
-        src.tagName=='INPUT' ||
-        src.tagName=='SELECT' ||
-        src.tagName=='OPTION' ||
-        src.tagName=='BUTTON' ||
-        src.tagName=='TEXTAREA')) return;
+      if((tag_name = src.tagName.toUpperCase()) && (
+        tag_name=='INPUT' ||
+        tag_name=='SELECT' ||
+        tag_name=='OPTION' ||
+        tag_name=='BUTTON' ||
+        tag_name=='TEXTAREA')) return;
         
       var pointer = [Event.pointerX(event), Event.pointerY(event)];
       var pos     = Position.cumulativeOffset(this.element);
@@ -572,7 +572,7 @@ var Sortable = {
   sortables: {},
   
   _findRootElement: function(element) {
-    while (element.tagName != "BODY") {  
+    while (element.tagName.toUpperCase() != "BODY") {  
       if(element.id && Sortable.sortables[element.id]) return element;
       element = element.parentNode;
     }
diff --git a/actionpack/lib/action_view/helpers/javascripts/effects.js b/actionpack/lib/action_view/helpers/javascripts/effects.js
index 3b02eda2b2..4893e7c367 100644
--- a/actionpack/lib/action_view/helpers/javascripts/effects.js
+++ b/actionpack/lib/action_view/helpers/javascripts/effects.js
@@ -48,37 +48,16 @@ Element.setContentZoom = function(element, percent) {
 }
 
 Element.getOpacity = function(element){
-  element = $(element);
-  var opacity;
-  if (opacity = element.getStyle('opacity'))  
-    return parseFloat(opacity);  
-  if (opacity = (element.getStyle('filter') || '').match(/alpha\(opacity=(.*)\)/))  
-    if(opacity[1]) return parseFloat(opacity[1]) / 100;  
-  return 1.0;  
+  return $(element).getStyle('opacity');
 }
 
-Element.setOpacity = function(element, value){  
-  element= $(element);  
-  if (value == 1){
-    element.setStyle({ opacity: 
-      (/Gecko/.test(navigator.userAgent) && !/Konqueror|Safari|KHTML/.test(navigator.userAgent)) ? 
-      0.999999 : 1.0 });
-    if(/MSIE/.test(navigator.userAgent) && !window.opera)  
-      element.setStyle({filter: Element.getStyle(element,'filter').replace(/alpha\([^\)]*\)/gi,'')});  
-  } else {  
-    if(value < 0.00001) value = 0;  
-    element.setStyle({opacity: value});
-    if(/MSIE/.test(navigator.userAgent) && !window.opera)  
-      element.setStyle(
-        { filter: element.getStyle('filter').replace(/alpha\([^\)]*\)/gi,'') +
-            'alpha(opacity='+value*100+')' });  
-  }
-  return element;
-}  
- 
-Element.getInlineOpacity = function(element){  
+Element.setOpacity = function(element, value){
+  return $(element).setStyle({opacity:value});
+}
+
+Element.getInlineOpacity = function(element){
   return $(element).style.opacity || '';
-}  
+}
 
 Element.forceRerendering = function(element) {
   try {
@@ -233,7 +212,7 @@ Object.extend(Object.extend(Effect.ScopedQueue.prototype, Enumerable), {
       this.effects.push(effect);
     
     if(!this.interval) 
-      this.interval = setInterval(this.loop.bind(this), 40);
+      this.interval = setInterval(this.loop.bind(this), 15);
   },
   remove: function(effect) {
     this.effects = this.effects.reject(function(e) { return e==effect });
@@ -244,7 +223,8 @@ Object.extend(Object.extend(Effect.ScopedQueue.prototype, Enumerable), {
   },
   loop: function() {
     var timePos = new Date().getTime();
-    this.effects.invoke('loop', timePos);
+    for(var i=0, len=this.effects.length;i<len;i++) 
+      if(this.effects[i]) this.effects[i].loop(timePos);
   }
 });
 
@@ -264,7 +244,7 @@ Effect.Queue = Effect.Queues.get('global');
 Effect.DefaultOptions = {
   transition: Effect.Transitions.sinoidal,
   duration:   1.0,   // seconds
-  fps:        25.0,  // max. 25fps due to Effect.Queue implementation
+  fps:        60.0,  // max. 60fps due to Effect.Queue implementation
   sync:       false, // true for combining
   from:       0.0,
   to:         1.0,
@@ -332,7 +312,10 @@ Effect.Base.prototype = {
     if(this.options[eventName]) this.options[eventName](this);
   },
   inspect: function() {
-    return '#<Effect:' + $H(this).inspect() + ',options:' + $H(this.options).inspect() + '>';
+    var data = $H();
+    for(property in this)
+      if(typeof this[property] != 'function') data[property] = this[property];
+    return '#<Effect:' + data.inspect() + ',options:' + $H(this.options).inspect() + '>';
   }
 }
 
@@ -513,9 +496,11 @@ Object.extend(Object.extend(Effect.Highlight.prototype, Effect.Base.prototype),
     // Prevent executing on elements not in the layout flow
     if(this.element.getStyle('display')=='none') { this.cancel(); return; }
     // Disable background image during the effect
-    this.oldStyle = {
-      backgroundImage: this.element.getStyle('background-image') };
-    this.element.setStyle({backgroundImage: 'none'});
+    this.oldStyle = {};
+    if (!this.options.keepBackgroundImage) {
+      this.oldStyle.backgroundImage = this.element.getStyle('background-image');
+      this.element.setStyle({backgroundImage: 'none'});
+    }
     if(!this.options.endcolor)
       this.options.endcolor = this.element.getStyle('background-color').parseColor('#ffffff');
     if(!this.options.restorecolor)
@@ -945,8 +930,32 @@ Object.extend(Object.extend(Effect.Morph.prototype, Effect.Base.prototype), {
     this.element = $(element);
     if(!this.element) throw(Effect._elementDoesNotExistError);
     var options = Object.extend({
-      style: ''
+      style: {}
     }, arguments[1] || {});
+    if (typeof options.style == 'string') {
+      if(options.style.indexOf(':') == -1) {
+        var cssText = '', selector = '.' + options.style;
+        $A(document.styleSheets).reverse().each(function(styleSheet) {
+          if (styleSheet.cssRules) cssRules = styleSheet.cssRules;
+          else if (styleSheet.rules) cssRules = styleSheet.rules;
+          $A(cssRules).reverse().each(function(rule) {
+            if (selector == rule.selectorText) {
+              cssText = rule.style.cssText;
+              throw $break;
+            }
+          });
+          if (cssText) throw $break;
+        });
+        this.style = cssText.parseStyle();
+        options.afterFinishInternal = function(effect){
+          effect.element.addClassName(effect.options.style);
+          effect.transforms.each(function(transform) {
+            if(transform.style != 'opacity')
+              effect.element.style[transform.style.camelize()] = '';
+          });
+        }
+      } else this.style = options.style.parseStyle();
+    } else this.style = $H(options.style)
     this.start(options);
   },
   setup: function(){
@@ -957,15 +966,26 @@ Object.extend(Object.extend(Effect.Morph.prototype, Effect.Base.prototype), {
         return parseInt( color.slice(i*2+1,i*2+3), 16 ) 
       });
     }
-    this.transforms = this.options.style.parseStyle().map(function(property){
-      var originalValue = this.element.getStyle(property[0]);
+    this.transforms = this.style.map(function(pair){
+      var property = pair[0].underscore().dasherize(), value = pair[1], unit = null;
+
+      if(value.parseColor('#zzzzzz') != '#zzzzzz') {
+        value = value.parseColor();
+        unit  = 'color';
+      } else if(property == 'opacity') {
+        value = parseFloat(value);
+        if(/MSIE/.test(navigator.userAgent) && !window.opera && (!this.element.currentStyle.hasLayout))
+          this.element.setStyle({zoom: 1});
+      } else if(Element.CSS_LENGTH.test(value)) 
+        var components = value.match(/^([\+\-]?[0-9\.]+)(.*)$/),
+          value = parseFloat(components[1]), unit = (components.length == 3) ? components[2] : null;
+
+      var originalValue = this.element.getStyle(property);
       return $H({ 
-        style: property[0], 
-        originalValue: property[1].unit=='color' ? 
-          parseColor(originalValue) : parseFloat(originalValue || 0), 
-        targetValue: property[1].unit=='color' ? 
-          parseColor(property[1].value) : property[1].value,
-        unit: property[1].unit
+        style: property, 
+        originalValue: unit=='color' ? parseColor(originalValue) : parseFloat(originalValue || 0), 
+        targetValue: unit=='color' ? parseColor(value) : value,
+        unit: unit
       });
     }.bind(this)).reject(function(transform){
       return (
@@ -1021,23 +1041,16 @@ Object.extend(Effect.Transform.prototype, {
   }
 });
 
-Element.CSS_PROPERTIES = ['azimuth', 'backgroundAttachment', 'backgroundColor', 'backgroundImage', 
-  'backgroundPosition', 'backgroundRepeat', 'borderBottomColor', 'borderBottomStyle', 
-  'borderBottomWidth', 'borderCollapse', 'borderLeftColor', 'borderLeftStyle', 'borderLeftWidth',
-  'borderRightColor', 'borderRightStyle', 'borderRightWidth', 'borderSpacing', 'borderTopColor',
-  'borderTopStyle', 'borderTopWidth', 'bottom', 'captionSide', 'clear', 'clip', 'color', 'content',
-  'counterIncrement', 'counterReset', 'cssFloat', 'cueAfter', 'cueBefore', 'cursor', 'direction',
-  'display', 'elevation', 'emptyCells', 'fontFamily', 'fontSize', 'fontSizeAdjust', 'fontStretch',
-  'fontStyle', 'fontVariant', 'fontWeight', 'height', 'left', 'letterSpacing', 'lineHeight',
-  'listStyleImage', 'listStylePosition', 'listStyleType', 'marginBottom', 'marginLeft', 'marginRight',
-  'marginTop', 'markerOffset', 'marks', 'maxHeight', 'maxWidth', 'minHeight', 'minWidth', 'opacity',
-  'orphans', 'outlineColor', 'outlineOffset', 'outlineStyle', 'outlineWidth', 'overflowX', 'overflowY',
-  'paddingBottom', 'paddingLeft', 'paddingRight', 'paddingTop', 'page', 'pageBreakAfter', 'pageBreakBefore',
-  'pageBreakInside', 'pauseAfter', 'pauseBefore', 'pitch', 'pitchRange', 'position', 'quotes',
-  'richness', 'right', 'size', 'speakHeader', 'speakNumeral', 'speakPunctuation', 'speechRate', 'stress',
-  'tableLayout', 'textAlign', 'textDecoration', 'textIndent', 'textShadow', 'textTransform', 'top',
-  'unicodeBidi', 'verticalAlign', 'visibility', 'voiceFamily', 'volume', 'whiteSpace', 'widows',
-  'width', 'wordSpacing', 'zIndex'];
+Element.CSS_PROPERTIES = $w(
+  'backgroundColor backgroundPosition borderBottomColor borderBottomStyle ' + 
+  'borderBottomWidth borderLeftColor borderLeftStyle borderLeftWidth ' +
+  'borderRightColor borderRightStyle borderRightWidth borderSpacing ' +
+  'borderTopColor borderTopStyle borderTopWidth bottom clip color ' +
+  'fontSize fontWeight height left letterSpacing lineHeight ' +
+  'marginBottom marginLeft marginRight marginTop markerOffset maxHeight '+
+  'maxWidth minHeight minWidth opacity outlineColor outlineOffset ' +
+  'outlineWidth paddingBottom paddingLeft paddingRight paddingTop ' +
+  'right textIndent top width wordSpacing zIndex');
   
 Element.CSS_LENGTH = /^(([\+\-]?[0-9\.]+)(em|ex|px|in|cm|mm|pt|pc|\%))|0$/;
 
@@ -1047,25 +1060,12 @@ String.prototype.parseStyle = function(){
   var style = element.down().style, styleRules = $H();
   
   Element.CSS_PROPERTIES.each(function(property){
-   if(style[property]) styleRules[property] = style[property]; 
+    if(style[property]) styleRules[property] = style[property]; 
   });
-  
-  var result = $H();
-  
-  styleRules.each(function(pair){
-    var property = pair[0], value = pair[1], unit = null;
-    
-    if(value.parseColor('#zzzzzz') != '#zzzzzz') {
-      value = value.parseColor();
-      unit  = 'color';
-    } else if(Element.CSS_LENGTH.test(value)) 
-      var components = value.match(/^([\+\-]?[0-9\.]+)(.*)$/),
-          value = parseFloat(components[1]), unit = (components.length == 3) ? components[2] : null;
-    
-    result[property.underscore().dasherize()] = $H({ value:value, unit:unit });
-  }.bind(this));
-  
-  return result;
+  if(/MSIE/.test(navigator.userAgent) && !window.opera && this.indexOf('opacity') > -1) {
+    styleRules.opacity = this.match(/opacity:\s*((?:0|1)?(?:\.\d*)?)/)[1];
+  }
+  return styleRules;
 };
 
 Element.morph = function(element, style) {
diff --git a/railties/CHANGELOG b/railties/CHANGELOG
index 761f74c6de..e0e3003e8c 100644
--- a/railties/CHANGELOG
+++ b/railties/CHANGELOG
@@ -1,5 +1,7 @@
 *SVN*
 
+* Update to script.aculo.us 1.7.0.  [Thomas Fuchs]
+
 * Update to Prototype 1.5.0. [Sam Stephenson]
 
 * Generator: use destination path for diff tempfiles.  #7015 [alfeld]
diff --git a/railties/html/javascripts/dragdrop.js b/railties/html/javascripts/dragdrop.js
index c71ddb8274..7ee9a5f317 100644
--- a/railties/html/javascripts/dragdrop.js
+++ b/railties/html/javascripts/dragdrop.js
@@ -303,12 +303,12 @@ Draggable.prototype = {
     if(Event.isLeftClick(event)) {    
       // abort on form elements, fixes a Firefox issue
       var src = Event.element(event);
-      if(src.tagName && (
-        src.tagName=='INPUT' ||
-        src.tagName=='SELECT' ||
-        src.tagName=='OPTION' ||
-        src.tagName=='BUTTON' ||
-        src.tagName=='TEXTAREA')) return;
+      if((tag_name = src.tagName.toUpperCase()) && (
+        tag_name=='INPUT' ||
+        tag_name=='SELECT' ||
+        tag_name=='OPTION' ||
+        tag_name=='BUTTON' ||
+        tag_name=='TEXTAREA')) return;
         
       var pointer = [Event.pointerX(event), Event.pointerY(event)];
       var pos     = Position.cumulativeOffset(this.element);
@@ -572,7 +572,7 @@ var Sortable = {
   sortables: {},
   
   _findRootElement: function(element) {
-    while (element.tagName != "BODY") {  
+    while (element.tagName.toUpperCase() != "BODY") {  
       if(element.id && Sortable.sortables[element.id]) return element;
       element = element.parentNode;
     }
diff --git a/railties/html/javascripts/effects.js b/railties/html/javascripts/effects.js
index 3b02eda2b2..4893e7c367 100644
--- a/railties/html/javascripts/effects.js
+++ b/railties/html/javascripts/effects.js
@@ -48,37 +48,16 @@ Element.setContentZoom = function(element, percent) {
 }
 
 Element.getOpacity = function(element){
-  element = $(element);
-  var opacity;
-  if (opacity = element.getStyle('opacity'))  
-    return parseFloat(opacity);  
-  if (opacity = (element.getStyle('filter') || '').match(/alpha\(opacity=(.*)\)/))  
-    if(opacity[1]) return parseFloat(opacity[1]) / 100;  
-  return 1.0;  
+  return $(element).getStyle('opacity');
 }
 
-Element.setOpacity = function(element, value){  
-  element= $(element);  
-  if (value == 1){
-    element.setStyle({ opacity: 
-      (/Gecko/.test(navigator.userAgent) && !/Konqueror|Safari|KHTML/.test(navigator.userAgent)) ? 
-      0.999999 : 1.0 });
-    if(/MSIE/.test(navigator.userAgent) && !window.opera)  
-      element.setStyle({filter: Element.getStyle(element,'filter').replace(/alpha\([^\)]*\)/gi,'')});  
-  } else {  
-    if(value < 0.00001) value = 0;  
-    element.setStyle({opacity: value});
-    if(/MSIE/.test(navigator.userAgent) && !window.opera)  
-      element.setStyle(
-        { filter: element.getStyle('filter').replace(/alpha\([^\)]*\)/gi,'') +
-            'alpha(opacity='+value*100+')' });  
-  }
-  return element;
-}  
- 
-Element.getInlineOpacity = function(element){  
+Element.setOpacity = function(element, value){
+  return $(element).setStyle({opacity:value});
+}
+
+Element.getInlineOpacity = function(element){
   return $(element).style.opacity || '';
-}  
+}
 
 Element.forceRerendering = function(element) {
   try {
@@ -233,7 +212,7 @@ Object.extend(Object.extend(Effect.ScopedQueue.prototype, Enumerable), {
       this.effects.push(effect);
     
     if(!this.interval) 
-      this.interval = setInterval(this.loop.bind(this), 40);
+      this.interval = setInterval(this.loop.bind(this), 15);
   },
   remove: function(effect) {
     this.effects = this.effects.reject(function(e) { return e==effect });
@@ -244,7 +223,8 @@ Object.extend(Object.extend(Effect.ScopedQueue.prototype, Enumerable), {
   },
   loop: function() {
     var timePos = new Date().getTime();
-    this.effects.invoke('loop', timePos);
+    for(var i=0, len=this.effects.length;i<len;i++) 
+      if(this.effects[i]) this.effects[i].loop(timePos);
   }
 });
 
@@ -264,7 +244,7 @@ Effect.Queue = Effect.Queues.get('global');
 Effect.DefaultOptions = {
   transition: Effect.Transitions.sinoidal,
   duration:   1.0,   // seconds
-  fps:        25.0,  // max. 25fps due to Effect.Queue implementation
+  fps:        60.0,  // max. 60fps due to Effect.Queue implementation
   sync:       false, // true for combining
   from:       0.0,
   to:         1.0,
@@ -332,7 +312,10 @@ Effect.Base.prototype = {
     if(this.options[eventName]) this.options[eventName](this);
   },
   inspect: function() {
-    return '#<Effect:' + $H(this).inspect() + ',options:' + $H(this.options).inspect() + '>';
+    var data = $H();
+    for(property in this)
+      if(typeof this[property] != 'function') data[property] = this[property];
+    return '#<Effect:' + data.inspect() + ',options:' + $H(this.options).inspect() + '>';
   }
 }
 
@@ -513,9 +496,11 @@ Object.extend(Object.extend(Effect.Highlight.prototype, Effect.Base.prototype),
     // Prevent executing on elements not in the layout flow
     if(this.element.getStyle('display')=='none') { this.cancel(); return; }
     // Disable background image during the effect
-    this.oldStyle = {
-      backgroundImage: this.element.getStyle('background-image') };
-    this.element.setStyle({backgroundImage: 'none'});
+    this.oldStyle = {};
+    if (!this.options.keepBackgroundImage) {
+      this.oldStyle.backgroundImage = this.element.getStyle('background-image');
+      this.element.setStyle({backgroundImage: 'none'});
+    }
     if(!this.options.endcolor)
       this.options.endcolor = this.element.getStyle('background-color').parseColor('#ffffff');
     if(!this.options.restorecolor)
@@ -945,8 +930,32 @@ Object.extend(Object.extend(Effect.Morph.prototype, Effect.Base.prototype), {
     this.element = $(element);
     if(!this.element) throw(Effect._elementDoesNotExistError);
     var options = Object.extend({
-      style: ''
+      style: {}
     }, arguments[1] || {});
+    if (typeof options.style == 'string') {
+      if(options.style.indexOf(':') == -1) {
+        var cssText = '', selector = '.' + options.style;
+        $A(document.styleSheets).reverse().each(function(styleSheet) {
+          if (styleSheet.cssRules) cssRules = styleSheet.cssRules;
+          else if (styleSheet.rules) cssRules = styleSheet.rules;
+          $A(cssRules).reverse().each(function(rule) {
+            if (selector == rule.selectorText) {
+              cssText = rule.style.cssText;
+              throw $break;
+            }
+          });
+          if (cssText) throw $break;
+        });
+        this.style = cssText.parseStyle();
+        options.afterFinishInternal = function(effect){
+          effect.element.addClassName(effect.options.style);
+          effect.transforms.each(function(transform) {
+            if(transform.style != 'opacity')
+              effect.element.style[transform.style.camelize()] = '';
+          });
+        }
+      } else this.style = options.style.parseStyle();
+    } else this.style = $H(options.style)
     this.start(options);
   },
   setup: function(){
@@ -957,15 +966,26 @@ Object.extend(Object.extend(Effect.Morph.prototype, Effect.Base.prototype), {
         return parseInt( color.slice(i*2+1,i*2+3), 16 ) 
       });
     }
-    this.transforms = this.options.style.parseStyle().map(function(property){
-      var originalValue = this.element.getStyle(property[0]);
+    this.transforms = this.style.map(function(pair){
+      var property = pair[0].underscore().dasherize(), value = pair[1], unit = null;
+
+      if(value.parseColor('#zzzzzz') != '#zzzzzz') {
+        value = value.parseColor();
+        unit  = 'color';
+      } else if(property == 'opacity') {
+        value = parseFloat(value);
+        if(/MSIE/.test(navigator.userAgent) && !window.opera && (!this.element.currentStyle.hasLayout))
+          this.element.setStyle({zoom: 1});
+      } else if(Element.CSS_LENGTH.test(value)) 
+        var components = value.match(/^([\+\-]?[0-9\.]+)(.*)$/),
+          value = parseFloat(components[1]), unit = (components.length == 3) ? components[2] : null;
+
+      var originalValue = this.element.getStyle(property);
       return $H({ 
-        style: property[0], 
-        originalValue: property[1].unit=='color' ? 
-          parseColor(originalValue) : parseFloat(originalValue || 0), 
-        targetValue: property[1].unit=='color' ? 
-          parseColor(property[1].value) : property[1].value,
-        unit: property[1].unit
+        style: property, 
+        originalValue: unit=='color' ? parseColor(originalValue) : parseFloat(originalValue || 0), 
+        targetValue: unit=='color' ? parseColor(value) : value,
+        unit: unit
       });
     }.bind(this)).reject(function(transform){
       return (
@@ -1021,23 +1041,16 @@ Object.extend(Effect.Transform.prototype, {
   }
 });
 
-Element.CSS_PROPERTIES = ['azimuth', 'backgroundAttachment', 'backgroundColor', 'backgroundImage', 
-  'backgroundPosition', 'backgroundRepeat', 'borderBottomColor', 'borderBottomStyle', 
-  'borderBottomWidth', 'borderCollapse', 'borderLeftColor', 'borderLeftStyle', 'borderLeftWidth',
-  'borderRightColor', 'borderRightStyle', 'borderRightWidth', 'borderSpacing', 'borderTopColor',
-  'borderTopStyle', 'borderTopWidth', 'bottom', 'captionSide', 'clear', 'clip', 'color', 'content',
-  'counterIncrement', 'counterReset', 'cssFloat', 'cueAfter', 'cueBefore', 'cursor', 'direction',
-  'display', 'elevation', 'emptyCells', 'fontFamily', 'fontSize', 'fontSizeAdjust', 'fontStretch',
-  'fontStyle', 'fontVariant', 'fontWeight', 'height', 'left', 'letterSpacing', 'lineHeight',
-  'listStyleImage', 'listStylePosition', 'listStyleType', 'marginBottom', 'marginLeft', 'marginRight',
-  'marginTop', 'markerOffset', 'marks', 'maxHeight', 'maxWidth', 'minHeight', 'minWidth', 'opacity',
-  'orphans', 'outlineColor', 'outlineOffset', 'outlineStyle', 'outlineWidth', 'overflowX', 'overflowY',
-  'paddingBottom', 'paddingLeft', 'paddingRight', 'paddingTop', 'page', 'pageBreakAfter', 'pageBreakBefore',
-  'pageBreakInside', 'pauseAfter', 'pauseBefore', 'pitch', 'pitchRange', 'position', 'quotes',
-  'richness', 'right', 'size', 'speakHeader', 'speakNumeral', 'speakPunctuation', 'speechRate', 'stress',
-  'tableLayout', 'textAlign', 'textDecoration', 'textIndent', 'textShadow', 'textTransform', 'top',
-  'unicodeBidi', 'verticalAlign', 'visibility', 'voiceFamily', 'volume', 'whiteSpace', 'widows',
-  'width', 'wordSpacing', 'zIndex'];
+Element.CSS_PROPERTIES = $w(
+  'backgroundColor backgroundPosition borderBottomColor borderBottomStyle ' + 
+  'borderBottomWidth borderLeftColor borderLeftStyle borderLeftWidth ' +
+  'borderRightColor borderRightStyle borderRightWidth borderSpacing ' +
+  'borderTopColor borderTopStyle borderTopWidth bottom clip color ' +
+  'fontSize fontWeight height left letterSpacing lineHeight ' +
+  'marginBottom marginLeft marginRight marginTop markerOffset maxHeight '+
+  'maxWidth minHeight minWidth opacity outlineColor outlineOffset ' +
+  'outlineWidth paddingBottom paddingLeft paddingRight paddingTop ' +
+  'right textIndent top width wordSpacing zIndex');
   
 Element.CSS_LENGTH = /^(([\+\-]?[0-9\.]+)(em|ex|px|in|cm|mm|pt|pc|\%))|0$/;
 
@@ -1047,25 +1060,12 @@ String.prototype.parseStyle = function(){
   var style = element.down().style, styleRules = $H();
   
   Element.CSS_PROPERTIES.each(function(property){
-   if(style[property]) styleRules[property] = style[property]; 
+    if(style[property]) styleRules[property] = style[property]; 
   });
-  
-  var result = $H();
-  
-  styleRules.each(function(pair){
-    var property = pair[0], value = pair[1], unit = null;
-    
-    if(value.parseColor('#zzzzzz') != '#zzzzzz') {
-      value = value.parseColor();
-      unit  = 'color';
-    } else if(Element.CSS_LENGTH.test(value)) 
-      var components = value.match(/^([\+\-]?[0-9\.]+)(.*)$/),
-          value = parseFloat(components[1]), unit = (components.length == 3) ? components[2] : null;
-    
-    result[property.underscore().dasherize()] = $H({ value:value, unit:unit });
-  }.bind(this));
-  
-  return result;
+  if(/MSIE/.test(navigator.userAgent) && !window.opera && this.indexOf('opacity') > -1) {
+    styleRules.opacity = this.match(/opacity:\s*((?:0|1)?(?:\.\d*)?)/)[1];
+  }
+  return styleRules;
 };
 
 Element.morph = function(element, style) {