Update Scriptaculous

to 1.8.3. Perhaps this will
fix Marco's bug (which I cannot
reproduce).

public/javascripts/builder.js

@@ -0,0 +1,136 @@
+// script.aculo.us builder.js v1.8.3, Thu Oct 08 11:23:33 +0200 2009
+
+// Copyright (c) 2005-2009 Thomas Fuchs (http://script.aculo.us, http://mir.aculo.us)
+//
+// script.aculo.us is freely distributable under the terms of an MIT-style license.
+// For details, see the script.aculo.us web site: http://script.aculo.us/
+
+var Builder = {
+  NODEMAP: {
+    AREA: 'map',
+    CAPTION: 'table',
+    COL: 'table',
+    COLGROUP: 'table',
+    LEGEND: 'fieldset',
+    OPTGROUP: 'select',
+    OPTION: 'select',
+    PARAM: 'object',
+    TBODY: 'table',
+    TD: 'table',
+    TFOOT: 'table',
+    TH: 'table',
+    THEAD: 'table',
+    TR: 'table'
+  },
+  // note: For Firefox < 1.5, OPTION and OPTGROUP tags are currently broken,
+  //       due to a Firefox bug
+  node: function(elementName) {
+    elementName = elementName.toUpperCase();
+
+    // try innerHTML approach
+    var parentTag = this.NODEMAP[elementName] || 'div';
+    var parentElement = document.createElement(parentTag);
+    try { // prevent IE "feature": http://dev.rubyonrails.org/ticket/2707
+      parentElement.innerHTML = "<" + elementName + "></" + elementName + ">";
+    } catch(e) {}
+    var element = parentElement.firstChild || null;
+
+    // see if browser added wrapping tags
+    if(element && (element.tagName.toUpperCase() != elementName))
+      element = element.getElementsByTagName(elementName)[0];
+
+    // fallback to createElement approach
+    if(!element) element = document.createElement(elementName);
+
+    // abort if nothing could be created
+    if(!element) return;
+
+    // attributes (or text)
+    if(arguments[1])
+      if(this._isStringOrNumber(arguments[1]) ||
+        (arguments[1] instanceof Array) ||
+        arguments[1].tagName) {
+          this._children(element, arguments[1]);
+        } else {
+          var attrs = this._attributes(arguments[1]);
+          if(attrs.length) {
+            try { // prevent IE "feature": http://dev.rubyonrails.org/ticket/2707
+              parentElement.innerHTML = "<" +elementName + " " +
+                attrs + "></" + elementName + ">";
+            } catch(e) {}
+            element = parentElement.firstChild || null;
+            // workaround firefox 1.0.X bug
+            if(!element) {
+              element = document.createElement(elementName);
+              for(attr in arguments[1])
+                element[attr == 'class' ? 'className' : attr] = arguments[1][attr];
+            }
+            if(element.tagName.toUpperCase() != elementName)
+              element = parentElement.getElementsByTagName(elementName)[0];
+          }
+        }
+
+    // text, or array of children
+    if(arguments[2])
+      this._children(element, arguments[2]);
+
+     return $(element);
+  },
+  _text: function(text) {
+     return document.createTextNode(text);
+  },
+
+  ATTR_MAP: {
+    'className': 'class',
+    'htmlFor': 'for'
+  },
+
+  _attributes: function(attributes) {
+    var attrs = [];
+    for(attribute in attributes)
+      attrs.push((attribute in this.ATTR_MAP ? this.ATTR_MAP[attribute] : attribute) +
+          '="' + attributes[attribute].toString().escapeHTML().gsub(/"/,'&quot;') + '"');
+    return attrs.join(" ");
+  },
+  _children: function(element, children) {
+    if(children.tagName) {
+      element.appendChild(children);
+      return;
+    }
+    if(typeof children=='object') { // array can hold nodes and text
+      children.flatten().each( function(e) {
+        if(typeof e=='object')
+          element.appendChild(e);
+        else
+          if(Builder._isStringOrNumber(e))
+            element.appendChild(Builder._text(e));
+      });
+    } else
+      if(Builder._isStringOrNumber(children))
+        element.appendChild(Builder._text(children));
+  },
+  _isStringOrNumber: function(param) {
+    return(typeof param=='string' || typeof param=='number');
+  },
+  build: function(html) {
+    var element = this.node('div');
+    $(element).update(html.strip());
+    return element.down();
+  },
+  dump: function(scope) {
+    if(typeof scope != 'object' && typeof scope != 'function') scope = window; //global scope
+
+    var tags = ("A ABBR ACRONYM ADDRESS APPLET AREA B BASE BASEFONT BDO BIG BLOCKQUOTE BODY " +
+      "BR BUTTON CAPTION CENTER CITE CODE COL COLGROUP DD DEL DFN DIR DIV DL DT EM FIELDSET " +
+      "FONT FORM FRAME FRAMESET H1 H2 H3 H4 H5 H6 HEAD HR HTML I IFRAME IMG INPUT INS ISINDEX "+
+      "KBD LABEL LEGEND LI LINK MAP MENU META NOFRAMES NOSCRIPT OBJECT OL OPTGROUP OPTION P "+
+      "PARAM PRE Q S SAMP SCRIPT SELECT SMALL SPAN STRIKE STRONG STYLE SUB SUP TABLE TBODY TD "+
+      "TEXTAREA TFOOT TH THEAD TITLE TR TT U UL VAR").split(/\s+/);
+
+    tags.each( function(tag){
+      scope[tag] = function() {
+        return Builder.node.apply(Builder, [tag].concat($A(arguments)));
+      };
+    });
+  }
+};

public/javascripts/controls.js

@@ -1,6 +1,8 @@
-// Copyright (c) 2005-2008 Thomas Fuchs (http://script.aculo.us, http://mir.aculo.us)
+// script.aculo.us controls.js v1.8.3, Thu Oct 08 11:23:33 +0200 2009
-//           (c) 2005-2008 Ivan Krstic (http://blogs.law.harvard.edu/ivan)
+
-//           (c) 2005-2008 Jon Tirsen (http://www.tirsen.com)
+// Copyright (c) 2005-2009 Thomas Fuchs (http://script.aculo.us, http://mir.aculo.us)
+//           (c) 2005-2009 Ivan Krstic (http://blogs.law.harvard.edu/ivan)
+//           (c) 2005-2009 Jon Tirsen (http://www.tirsen.com)
 // Contributors:
 //  Richard Livsey
 //  Rahul Bhargava

public/javascripts/dragdrop.js

@@ -1,5 +1,6 @@
-// Copyright (c) 2005-2008 Thomas Fuchs (http://script.aculo.us, http://mir.aculo.us)
+// script.aculo.us dragdrop.js v1.8.3, Thu Oct 08 11:23:33 +0200 2009
-//           (c) 2005-2008 Sammi Williams (http://www.oriontransfer.co.nz, sammi@oriontransfer.co.nz)
+
+// Copyright (c) 2005-2009 Thomas Fuchs (http://script.aculo.us, http://mir.aculo.us)
 //
 // script.aculo.us is freely distributable under the terms of an MIT-style license.
 // For details, see the script.aculo.us web site: http://script.aculo.us/
@@ -311,7 +312,7 @@ var Draggable = Class.create({
         tag_name=='TEXTAREA')) return;
 
       var pointer = [Event.pointerX(event), Event.pointerY(event)];
-      var pos     = Position.cumulativeOffset(this.element);
+      var pos     = this.element.cumulativeOffset();
       this.offset = [0,1].map( function(i) { return (pointer[i] - pos[i]) });
 
       Draggables.activate(this);
@@ -454,7 +455,7 @@ var Draggable = Class.create({
   },
 
   draw: function(point) {
-    var pos = Position.cumulativeOffset(this.element);
+    var pos = this.element.cumulativeOffset();
     if(this.options.ghosting) {
       var r   = Position.realOffset(this.element);
       pos[0] += r[0] - Position.deltaX; pos[1] += r[1] - Position.deltaY;
@@ -730,7 +731,7 @@ var Sortable = {
     }
 
     // keep reference
-    this.sortables[element.id] = options;
+    this.sortables[element.identify()] = options;
 
     // for onupdate
     Draggables.addObserver(new SortableObserver(element, options.onUpdate));
@@ -825,7 +826,7 @@ var Sortable = {
           hide().addClassName('dropmarker').setStyle({position:'absolute'});
       document.getElementsByTagName("body").item(0).appendChild(Sortable._marker);
     }
-    var offsets = Position.cumulativeOffset(dropon);
+    var offsets = dropon.cumulativeOffset();
     Sortable._marker.setStyle({left: offsets[0]+'px', top: offsets[1] + 'px'});
 
     if(position=='after')

public/javascripts/effects.js

@@ -1,4 +1,6 @@
-// Copyright (c) 2005-2008 Thomas Fuchs (http://script.aculo.us, http://mir.aculo.us)
+// script.aculo.us effects.js v1.8.3, Thu Oct 08 11:23:33 +0200 2009
+
+// Copyright (c) 2005-2009 Thomas Fuchs (http://script.aculo.us, http://mir.aculo.us)
 // Contributors:
 //  Justin Palmer (http://encytemedia.com/)
 //  Mark Pilgrim (http://diveintomark.org/)
@@ -145,14 +147,13 @@ var Effect = {
     'blind':  ['BlindDown','BlindUp'],
     'appear': ['Appear','Fade']
   },
-  toggle: function(element, effect) {
+  toggle: function(element, effect, options) {
     element = $(element);
-    effect = (effect || 'appear').toLowerCase();
+    effect  = (effect || 'appear').toLowerCase();
-    var options = Object.extend({
+    
+    return Effect[ Effect.PAIRS[ effect ][ element.visible() ? 1 : 0 ] ](element, Object.extend({
       queue: { position:'end', scope:(element.id || 'global'), limit: 1 }
-    }, arguments[2] || { });
+    }, options || {}));
-    Effect[element.visible() ?
-      Effect.PAIRS[effect][1] : Effect.PAIRS[effect][0]](element, options);
   }
 };
 
@@ -228,12 +229,6 @@ Effect.Queue = Effect.Queues.get('global');
 Effect.Base = Class.create({
   position: null,
   start: function(options) {
-    function codeForEvent(options,eventName){
-      return (
-        (options[eventName+'Internal'] ? 'this.options.'+eventName+'Internal(this);' : '') +
-        (options[eventName] ? 'this.options.'+eventName+'(this);' : '')
-      );
-    }
     if (options && options.transition === false) options.transition = Effect.Transitions.linear;
     this.options      = Object.extend(Object.extend({ },Effect.DefaultOptions), options || { });
     this.currentFrame = 0;

public/javascripts/scriptaculous.js

@@ -1,5 +1,7 @@
-// Copyright (c) 2005 Thomas Fuchs (http://script.aculo.us, http://mir.aculo.us)
+// script.aculo.us scriptaculous.js v1.8.3, Thu Oct 08 11:23:33 +0200 2009
-// 
+
+// Copyright (c) 2005-2009 Thomas Fuchs (http://script.aculo.us, http://mir.aculo.us)
+//
 // 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
@@ -7,7 +9,7 @@
 // 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.
 //
@@ -18,30 +20,49 @@
 // 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.
+//
+// For details, see the script.aculo.us web site: http://script.aculo.us/
 
 var Scriptaculous = {
-  Version: '1.5_rc3',
+  Version: '1.8.3',
   require: function(libraryName) {
-    // inserting via DOM fails in Safari 2.0, so brute force approach
+    try{
-    document.write('<script type="text/javascript" src="'+libraryName+'"></script>');
+      // inserting via DOM fails in Safari 2.0, so brute force approach
-  },
+      document.write('<script type="text/javascript" src="'+libraryName+'"><\/script>');
-  load: function() {
+    } catch(e) {
-    if((typeof Prototype=='undefined') ||
+      // for xhtml+xml served content, fall back to DOM methods
-      parseFloat(Prototype.Version.split(".")[0] + "." +
+      var script = document.createElement('script');
-                 Prototype.Version.split(".")[1]) < 1.4)
+      script.type = 'text/javascript';
-      throw("script.aculo.us requires the Prototype JavaScript framework >= 1.4.0");
+      script.src = libraryName;
-    var scriptTags = document.getElementsByTagName("script");
+      document.getElementsByTagName('head')[0].appendChild(script);
-    for(var i=0;i<scriptTags.length;i++) {
-      if(scriptTags[i].src && scriptTags[i].src.match(/scriptaculous\.js(\?.*)?$/)) {
-        var path = scriptTags[i].src.replace(/scriptaculous\.js(\?.*)?$/,'');
-        this.require(path + 'effects.js');
-        this.require(path + 'dragdrop.js');
-        this.require(path + 'controls.js');
-        this.require(path + 'slider.js');
-        break;
-      }
     }
+  },
+  REQUIRED_PROTOTYPE: '1.6.0.3',
+  load: function() {
+    function convertVersionString(versionString) {
+      var v = versionString.replace(/_.*|\./g, '');
+      v = parseInt(v + '0'.times(4-v.length));
+      return versionString.indexOf('_') > -1 ? v-1 : v;
+    }
+
+    if((typeof Prototype=='undefined') ||
+       (typeof Element == 'undefined') ||
+       (typeof Element.Methods=='undefined') ||
+       (convertVersionString(Prototype.Version) <
+        convertVersionString(Scriptaculous.REQUIRED_PROTOTYPE)))
+       throw("script.aculo.us requires the Prototype JavaScript framework >= " +
+        Scriptaculous.REQUIRED_PROTOTYPE);
+
+    var js = /scriptaculous\.js(\?.*)?$/;
+    $$('head script[src]').findAll(function(s) {
+      return s.src.match(js);
+    }).each(function(s) {
+      var path = s.src.replace(js, ''),
+      includes = s.src.match(/\?.*load=([a-z,]*)/);
+      (includes ? includes[1] : 'builder,effects,dragdrop,controls,slider,sound').split(',').each(
+       function(include) { Scriptaculous.require(path+include+'.js') });
+    });
   }
-}
+};
 
 Scriptaculous.load();

public/javascripts/slider.js

@@ -1,258 +1,275 @@
-// Copyright (c) 2005 Marty Haught
+// script.aculo.us slider.js v1.8.3, Thu Oct 08 11:23:33 +0200 2009
-// 
-// See scriptaculous.js for full license.
 
-if(!Control) var Control = {};
+// Copyright (c) 2005-2009 Marty Haught, Thomas Fuchs
-Control.Slider = Class.create();
+//
+// script.aculo.us is freely distributable under the terms of an MIT-style license.
+// For details, see the script.aculo.us web site: http://script.aculo.us/
+
+if (!Control) var Control = { };
 
 // options:
 //  axis: 'vertical', or 'horizontal' (default)
-//  increment: (default: 1)
-//  step: (default: 1)
 //
 // callbacks:
 //  onChange(value)
 //  onSlide(value)
-Control.Slider.prototype = {
+Control.Slider = Class.create({
   initialize: function(handle, track, options) {
-    this.handle  = $(handle);
+    var slider = this;
-    this.track   = $(track);
 
-    this.options = options || {};
+    if (Object.isArray(handle)) {
+      this.handles = handle.collect( function(e) { return $(e) });
+    } else {
+      this.handles = [$(handle)];
+    }
+
+    this.track   = $(track);
+    this.options = options || { };
 
     this.axis      = this.options.axis || 'horizontal';
     this.increment = this.options.increment || 1;
-    this.step      = parseInt(this.options.step) || 1;
+    this.step      = parseInt(this.options.step || '1');
-    this.value     = 0;
+    this.range     = this.options.range || $R(0,1);
 
-    var defaultMaximum = Math.round(this.track.offsetWidth / this.increment);
+    this.value     = 0; // assure backwards compat
-    if(this.isVertical()) defaultMaximum = Math.round(this.track.offsetHeight / this.increment);   
+    this.values    = this.handles.map( function() { return 0 });
-    
+    this.spans     = this.options.spans ? this.options.spans.map(function(s){ return $(s) }) : false;
-    this.maximum = this.options.maximum || defaultMaximum;
+    this.options.startSpan = $(this.options.startSpan || null);
-    this.minimum = this.options.minimum || 0;
+    this.options.endSpan   = $(this.options.endSpan || null);
+
+    this.restricted = this.options.restricted || false;
+
+    this.maximum   = this.options.maximum || this.range.end;
+    this.minimum   = this.options.minimum || this.range.start;
 
     // Will be used to align the handle onto the track, if necessary
-    this.alignX = parseInt (this.options.alignX) || 0;
+    this.alignX = parseInt(this.options.alignX || '0');
-    this.alignY = parseInt (this.options.alignY) || 0;
+    this.alignY = parseInt(this.options.alignY || '0');
 
-    // Zero out the slider position	
+    this.trackLength = this.maximumOffset() - this.minimumOffset();
-    this.setCurrentLeft(Position.cumulativeOffset(this.track)[0] - Position.cumulativeOffset(this.handle)[0] + this.alignX);
-    this.setCurrentTop(this.trackTop() - Position.cumulativeOffset(this.handle)[1] + this.alignY);
 
-    this.offsetX = 0;
+    this.handleLength = this.isVertical() ?
-    this.offsetY = 0;
+      (this.handles[0].offsetHeight != 0 ?
-
+        this.handles[0].offsetHeight : this.handles[0].style.height.replace(/px$/,"")) :
-    this.originalLeft = this.currentLeft();
+      (this.handles[0].offsetWidth != 0 ? this.handles[0].offsetWidth :
-    this.originalTop  = this.currentTop();
+        this.handles[0].style.width.replace(/px$/,""));
-    this.originalZ    = parseInt(this.handle.style.zIndex || "0");
-
-    // Prepopulate Slider value
-    this.setSliderValue(parseInt(this.options.sliderValue) || 0);
 
     this.active   = false;
     this.dragging = false;
     this.disabled = false;
 
-    // FIXME: use css
+    if (this.options.disabled) this.setDisabled();
-    this.handleImage    = $(this.options.handleImage) || false; 
-    this.handleDisabled = this.options.handleDisabled || false;
-    this.handleEnabled  = false;
-    if(this.handleImage)
-      this.handleEnabled  = this.handleImage.src || false;
 
-    if(this.options.disabled)
+    // Allowed values array
-      this.setDisabled();
+    this.allowedValues = this.options.values ? this.options.values.sortBy(Prototype.K) : false;
-
+    if (this.allowedValues) {
-    // Value Array
+      this.minimum = this.allowedValues.min();
-    this.values = this.options.values || false;  // Add method to validate and sort??
+      this.maximum = this.allowedValues.max();
-
+    }
-    Element.makePositioned(this.handle); // fix IE
 
     this.eventMouseDown = this.startDrag.bindAsEventListener(this);
     this.eventMouseUp   = this.endDrag.bindAsEventListener(this);
     this.eventMouseMove = this.update.bindAsEventListener(this);
-    this.eventKeypress  = this.keyPress.bindAsEventListener(this);
 
-    Event.observe(this.handle, "mousedown", this.eventMouseDown);
+    // Initialize handles in reverse (make sure first handle is active)
-    Event.observe(document, "mouseup", this.eventMouseUp);
+    this.handles.each( function(h,i) {
-    Event.observe(document, "mousemove", this.eventMouseMove);
+      i = slider.handles.length-1-i;
-    Event.observe(document, "keypress", this.eventKeypress);
+      slider.setValue(parseFloat(
+        (Object.isArray(slider.options.sliderValue) ?
+          slider.options.sliderValue[i] : slider.options.sliderValue) ||
+         slider.range.start), i);
+      h.makePositioned().observe("mousedown", slider.eventMouseDown);
+    });
+
+    this.track.observe("mousedown", this.eventMouseDown);
+    document.observe("mouseup", this.eventMouseUp);
+    document.observe("mousemove", this.eventMouseMove);
+
+    this.initialized = true;
   },
   dispose: function() {
-    Event.stopObserving(this.handle, "mousedown", this.eventMouseDown);
+    var slider = this;
+    Event.stopObserving(this.track, "mousedown", this.eventMouseDown);
     Event.stopObserving(document, "mouseup", this.eventMouseUp);
     Event.stopObserving(document, "mousemove", this.eventMouseMove);
-    Event.stopObserving(document, "keypress", this.eventKeypress);
+    this.handles.each( function(h) {
+      Event.stopObserving(h, "mousedown", slider.eventMouseDown);
+    });
   },
   setDisabled: function(){
     this.disabled = true;
-    if(this.handleDisabled)
-      this.handleImage.src = this.handleDisabled;
   },
   setEnabled: function(){
     this.disabled = false;
-    if(this.handleEnabled)
-      this.handleImage.src = this.handleEnabled;
-  },  
-  currentLeft: function() {
-    return parseInt(this.handle.style.left || '0');
   },
-  currentTop: function() {
-    return parseInt(this.handle.style.top || '0');
-  },
-  setCurrentLeft: function(left) {
-    this.handle.style.left = left +"px";
-  },
-  setCurrentTop: function(top) {
-    this.handle.style.top = top +"px";
-  },
-  trackLeft: function(){
-    return Position.cumulativeOffset(this.track)[0];
-  },
-  trackTop: function(){
-    return Position.cumulativeOffset(this.track)[1];
-  }, 
   getNearestValue: function(value){
-    if(this.values){
+    if (this.allowedValues){
-      var i = 0;
+      if (value >= this.allowedValues.max()) return(this.allowedValues.max());
-      var offset = Math.abs(this.values[0] - value);
+      if (value <= this.allowedValues.min()) return(this.allowedValues.min());
-      var newValue = this.values[0];
 
-      for(i=0; i < this.values.length; i++){
+      var offset = Math.abs(this.allowedValues[0] - value);
-        var currentOffset = Math.abs(this.values[i] - value);
+      var newValue = this.allowedValues[0];
-        if(currentOffset < offset){
+      this.allowedValues.each( function(v) {
-          newValue = this.values[i];
+        var currentOffset = Math.abs(v - value);
+        if (currentOffset <= offset){
+          newValue = v;
           offset = currentOffset;
         }
-      }
+      });
       return newValue;
     }
+    if (value > this.range.end) return this.range.end;
+    if (value < this.range.start) return this.range.start;
     return value;
   },
-  setSliderValue:  function(sliderValue){
+  setValue: function(sliderValue, handleIdx){
-    // First check our max and minimum and nearest values
+    if (!this.active) {
-    sliderValue = this.getNearestValue(sliderValue);	
+      this.activeHandleIdx = handleIdx || 0;
-    if(sliderValue > this.maximum) sliderValue = this.maximum;
+      this.activeHandle    = this.handles[this.activeHandleIdx];
-    if(sliderValue < this.minimum) sliderValue = this.minimum;
+      this.updateStyles();
-    var offsetDiff = (sliderValue - (this.value||this.minimum)) * this.increment;
-    
-    if(this.isVertical()){
-      this.setCurrentTop(offsetDiff + this.currentTop());
-    } else {
-      this.setCurrentLeft(offsetDiff + this.currentLeft());
     }
-    this.value = sliderValue;
+    handleIdx = handleIdx || this.activeHandleIdx || 0;
-    this.updateFinished();
+    if (this.initialized && this.restricted) {
-  },  
+      if ((handleIdx>0) && (sliderValue<this.values[handleIdx-1]))
+        sliderValue = this.values[handleIdx-1];
+      if ((handleIdx < (this.handles.length-1)) && (sliderValue>this.values[handleIdx+1]))
+        sliderValue = this.values[handleIdx+1];
+    }
+    sliderValue = this.getNearestValue(sliderValue);
+    this.values[handleIdx] = sliderValue;
+    this.value = this.values[0]; // assure backwards compat
+
+    this.handles[handleIdx].style[this.isVertical() ? 'top' : 'left'] =
+      this.translateToPx(sliderValue);
+
+    this.drawSpans();
+    if (!this.dragging || !this.event) this.updateFinished();
+  },
+  setValueBy: function(delta, handleIdx) {
+    this.setValue(this.values[handleIdx || this.activeHandleIdx || 0] + delta,
+      handleIdx || this.activeHandleIdx || 0);
+  },
+  translateToPx: function(value) {
+    return Math.round(
+      ((this.trackLength-this.handleLength)/(this.range.end-this.range.start)) *
+      (value - this.range.start)) + "px";
+  },
+  translateToValue: function(offset) {
+    return ((offset/(this.trackLength-this.handleLength) *
+      (this.range.end-this.range.start)) + this.range.start);
+  },
+  getRange: function(range) {
+    var v = this.values.sortBy(Prototype.K);
+    range = range || 0;
+    return $R(v[range],v[range+1]);
+  },
   minimumOffset: function(){
-    return(this.isVertical() ? 
+    return(this.isVertical() ? this.alignY : this.alignX);
-      this.trackTop() + this.alignY :
-      this.trackLeft() + this.alignX);
   },
   maximumOffset: function(){
     return(this.isVertical() ?
-      this.trackTop() + this.alignY + (this.maximum - this.minimum) * this.increment :
+      (this.track.offsetHeight != 0 ? this.track.offsetHeight :
-      this.trackLeft() + this.alignX + (this.maximum - this.minimum) * this.increment);
+        this.track.style.height.replace(/px$/,"")) - this.alignY :
-  },  
+      (this.track.offsetWidth != 0 ? this.track.offsetWidth :
+        this.track.style.width.replace(/px$/,"")) - this.alignX);
+  },
   isVertical:  function(){
     return (this.axis == 'vertical');
   },
+  drawSpans: function() {
+    var slider = this;
+    if (this.spans)
+      $R(0, this.spans.length-1).each(function(r) { slider.setSpan(slider.spans[r], slider.getRange(r)) });
+    if (this.options.startSpan)
+      this.setSpan(this.options.startSpan,
+        $R(0, this.values.length>1 ? this.getRange(0).min() : this.value ));
+    if (this.options.endSpan)
+      this.setSpan(this.options.endSpan,
+        $R(this.values.length>1 ? this.getRange(this.spans.length-1).max() : this.value, this.maximum));
+  },
+  setSpan: function(span, range) {
+    if (this.isVertical()) {
+      span.style.top = this.translateToPx(range.start);
+      span.style.height = this.translateToPx(range.end - range.start + this.range.start);
+    } else {
+      span.style.left = this.translateToPx(range.start);
+      span.style.width = this.translateToPx(range.end - range.start + this.range.start);
+    }
+  },
+  updateStyles: function() {
+    this.handles.each( function(h){ Element.removeClassName(h, 'selected') });
+    Element.addClassName(this.activeHandle, 'selected');
+  },
   startDrag: function(event) {
-    if(Event.isLeftClick(event)) {
+    if (Event.isLeftClick(event)) {
-      if(!this.disabled){
+      if (!this.disabled){
         this.active = true;
-        var pointer = [Event.pointerX(event), Event.pointerY(event)];
+
-        var offsets = Position.cumulativeOffset(this.handle);
+        var handle = Event.element(event);
-        this.offsetX =  (pointer[0] - offsets[0]);
+        var pointer  = [Event.pointerX(event), Event.pointerY(event)];
-        this.offsetY =  (pointer[1] - offsets[1]);
+        var track = handle;
-        this.originalLeft = this.currentLeft();
+        if (track==this.track) {
-        this.originalTop = this.currentTop();
+          var offsets  = this.track.cumulativeOffset();
+          this.event = event;
+          this.setValue(this.translateToValue(
+           (this.isVertical() ? pointer[1]-offsets[1] : pointer[0]-offsets[0])-(this.handleLength/2)
+          ));
+          var offsets  = this.activeHandle.cumulativeOffset();
+          this.offsetX = (pointer[0] - offsets[0]);
+          this.offsetY = (pointer[1] - offsets[1]);
+        } else {
+          // find the handle (prevents issues with Safari)
+          while((this.handles.indexOf(handle) == -1) && handle.parentNode)
+            handle = handle.parentNode;
+
+          if (this.handles.indexOf(handle)!=-1) {
+            this.activeHandle    = handle;
+            this.activeHandleIdx = this.handles.indexOf(this.activeHandle);
+            this.updateStyles();
+
+            var offsets  = this.activeHandle.cumulativeOffset();
+            this.offsetX = (pointer[0] - offsets[0]);
+            this.offsetY = (pointer[1] - offsets[1]);
+          }
+        }
       }
       Event.stop(event);
     }
   },
   update: function(event) {
-   if(this.active) {
+   if (this.active) {
-      if(!this.dragging) {
+      if (!this.dragging) this.dragging = true;
-        var style = this.handle.style;
-        this.dragging = true;
-        if(style.position=="") style.position = "relative";
-        style.zIndex = this.options.zindex;
-      }
       this.draw(event);
-      // fix AppleWebKit rendering
+      if (Prototype.Browser.WebKit) window.scrollBy(0,0);
-      if(navigator.appVersion.indexOf('AppleWebKit')>0) window.scrollBy(0,0);
       Event.stop(event);
    }
   },
   draw: function(event) {
     var pointer = [Event.pointerX(event), Event.pointerY(event)];
-    var offsets = Position.cumulativeOffset(this.handle);
+    var offsets = this.track.cumulativeOffset();
-
+    pointer[0] -= this.offsetX + offsets[0];
-    offsets[0] -= this.currentLeft();
+    pointer[1] -= this.offsetY + offsets[1];
-    offsets[1] -= this.currentTop();
+    this.event = event;
-        
+    this.setValue(this.translateToValue( this.isVertical() ? pointer[1] : pointer[0] ));
-    // Adjust for the pointer's position on the handle
+    if (this.initialized && this.options.onSlide)
-    pointer[0] -= this.offsetX;
+      this.options.onSlide(this.values.length>1 ? this.values : this.value, this);
-    pointer[1] -= this.offsetY;
-    var style = this.handle.style;
-
-    if(this.isVertical()){
-      if(pointer[1] > this.maximumOffset())
-        pointer[1] = this.maximumOffset();
-      if(pointer[1] < this.minimumOffset())
-        pointer[1] =  this.minimumOffset();
-
-    // Increment by values
-    if(this.values){
-      this.value = this.getNearestValue(Math.round((pointer[1] - this.minimumOffset()) / this.increment) + this.minimum);
-      pointer[1] = this.trackTop() + this.alignY + (this.value - this.minimum) * this.increment;
-    } else {
-      this.value = Math.round((pointer[1] - this.minimumOffset()) / this.increment) + this.minimum;
-    }
-    style.top  = pointer[1] - offsets[1] + "px";
-    } else {
-      if(pointer[0] > this.maximumOffset()) pointer[0] = this.maximumOffset();
-      if(pointer[0] < this.minimumOffset())	pointer[0] =  this.minimumOffset();
-      // Increment by values
-      if(this.values){
-        this.value = this.getNearestValue(Math.round((pointer[0] - this.minimumOffset()) / this.increment) + this.minimum);
-        pointer[0] = this.trackLeft() + this.alignX + (this.value - this.minimum) * this.increment;
-      } else {
-        this.value = Math.round((pointer[0] - this.minimumOffset()) / this.increment) + this.minimum;
-      }
-      style.left = (pointer[0] - offsets[0]) + "px";
-    }
-    if(this.options.onSlide) this.options.onSlide(this.value);
   },
   endDrag: function(event) {
-    if(this.active && this.dragging) {
+    if (this.active && this.dragging) {
       this.finishDrag(event, true);
       Event.stop(event);
     }
     this.active = false;
     this.dragging = false;
-  },  
+  },
   finishDrag: function(event, success) {
     this.active = false;
     this.dragging = false;
-    this.handle.style.zIndex = this.originalZ;
-    this.originalLeft = this.currentLeft();
-    this.originalTop  = this.currentTop();
     this.updateFinished();
   },
   updateFinished: function() {
-    if(this.options.onChange) this.options.onChange(this.value);
+    if (this.initialized && this.options.onChange)
-  },
+      this.options.onChange(this.values.length>1 ? this.values : this.value, this);
-  keyPress: function(event) {
+    this.event = null;
-    if(this.active && !this.disabled) {
-      switch(event.keyCode) {
-        case Event.KEY_ESC:
-          this.finishDrag(event, false);
-          Event.stop(event); 
-          break;
-      }
-      if(navigator.appVersion.indexOf('AppleWebKit')>0) Event.stop(event);
-    }
   }
-}
+});