Refactored code for readability and size

18 files changed, 551 insertions, 427 deletions

diff --git a/Rakefile b/Rakefile
index f2df30e..7fdd118 100644
--- a/Rakefile
+++ b/Rakefile
@@ -1,6 +1,6 @@
 SVGJS_VERSION = '0.1'
 
-DEFAULT_MODULES = %w[ svg container object element document defs shape rect circle ellipse path image group clip_path ]
+DEFAULT_MODULES = %w[ svg utils container element document defs shape rect circle ellipse path image group clip_path ]
 
 KILO = 1024   # how many bytes in a "kilobyte"
 
diff --git a/dist/svg.js b/dist/svg.js
index 63c8780..feea266 100644
--- a/dist/svg.js
+++ b/dist/svg.js
@@ -1,16 +1,27 @@
-/* svg.js 0.1 - svg container object element document defs shape rect circle ellipse path image group clip_path - svgjs.com/license */
+/* svg.js 0.1 - svg utils container element document defs shape rect circle ellipse path image group clip_path - svgjs.com/license */
 (function() {
 
-  var SVG = {
-    namespace: "http://www.w3.org/2000/svg",
-    xlink:     "http://www.w3.org/1999/xlink",
+  this.SVG = {
+    ns:     'http://www.w3.org/2000/svg',
+    xlink:  'http://www.w3.org/1999/xlink',
     
-    createElement: function(e) {
-      return document.createElementNS(this.namespace, e);
+    create: function(e) {
+      return document.createElementNS(this.ns, e);
     }
   };
   
-  this.SVG = SVG;
+  this.svg = function(e) {
+    return new SVG.Document(e);
+  };
+
+  SVG.Utils = {
+    
+    merge: function(o, m) {
+      for (var k in m)
+        o.prototype[k] = m[k];
+    }
+    
+  };
 
   SVG.Container = {
     
@@ -22,7 +33,7 @@
       if (!this.contains(e)) {
         i = i == null ? this.children().length : i;
         this.children().splice(i, 0, e);
-        this.svgElement.insertBefore(e.svgElement, this.svgElement.childNodes[i + 1]);
+        this.node.insertBefore(e.node, this.node.childNodes[i + 1]);
         e.parent = this;
       }
       
@@ -71,7 +82,7 @@
       if (0 <= i && i < this.children().length) {
         var e = this.children()[i];
         this.children().splice(i, 1);
-        this.svgElement.removeChild(e.svgElement);
+        this.node.removeChild(e.node);
         e.parent = null;
       }
       
@@ -158,150 +169,153 @@
     
   };
 
-  Object.prototype.include = function(module) {
-    
-    for (var key in module)
-      this.prototype[key] = module[key];
-    
-    if (module.included != null)
-      module.included.apply(this);
-    
-    return this;
-  };
-
-  SVG.Element = function Element(svgElement) {
-    this.svgElement = svgElement;
-    this.attributes = {};
+  SVG.Element = function Element(node) {
+    this.node = node;
+    this.attrs = {};
   };
   
-  //-D // inherit from SVG.Object
-  //-D SVG.Element.prototype = new SVG.Object();
-  
-  // move element to given x and y values
-  SVG.Element.prototype.move = function(x, y) {
-    this.setAttribute('x', x);
-    this.setAttribute('y', y);
+  // Add element-specific functions
+  SVG.Utils.merge(SVG.Element, {
     
-    return this;
-  };
+    // move element to given x and y values
+    move: function(x, y) {
+      this.attr('x', x);
+      this.attr('y', y);
   
-  // set element opacity
-  SVG.Element.prototype.opacity = function(o) {
-    return this.setAttribute('opacity', Math.max(0, Math.min(1, o)));
-  };
+      return this;
+    },
   
-  // set element size to given width and height
-  SVG.Element.prototype.size = function(w, h) {
-    this.setAttribute('width', w);
-    this.setAttribute('height', h);
-    
-    return this;
-  };
+    // set element opacity
+    opacity: function(o) {
+      return this.attr('opacity', Math.max(0, Math.min(1, o)));
+    },
   
-  // clip element using another element
-  SVG.Element.prototype.clip = function(block) {
-    var p = this.parentSVG().defs().clipPath();
-    block(p);
-    
-    return this.clipTo(p);
-  };
+    // set element size to given width and height
+    size: function(w, h) {
+      this.attr('width', w);
+      this.attr('height', h);
   
-  // distribute clipping path to svg element
-  SVG.Element.prototype.clipTo = function(p) {
-    return this.setAttribute('clip-path', 'url(#' + p.id + ')');
-  };
+      return this;
+    },
   
-  // remove element
-  SVG.Element.prototype.destroy = function() {
-    return this.parent != null ? this.parent.remove(this) : void 0;
-  };
+    // clip element using another element
+    clip: function(block) {
+      var p = this.parentSVG().defs().clipPath();
+      block(p);
   
-  // get parent document
-  SVG.Element.prototype.parentDoc = function() {
-    return this._findParent(SVG.Document);
-  };
+      return this.clipTo(p);
+    },
   
-  // get parent svg wrapper
-  SVG.Element.prototype.parentSVG = function() {
-    return this.parentDoc();
-  };
+    // distribute clipping path to svg element
+    clipTo: function(p) {
+      return this.attr('clip-path', 'url(#' + p.id + ')');
+    },
   
-  // set svg element attribute
-  SVG.Element.prototype.setAttribute = function(a, v, ns) {
-    this.attributes[a] = v;
-    
-    if (ns != null)
-      this.svgElement.setAttributeNS(ns, a, v);
-    else
-      this.svgElement.setAttribute(a, v);
-    
-    return this;
-  };
+    // remove element
+    destroy: function() {
+      return this.parent != null ? this.parent.remove(this) : void 0;
+    },
   
-  // set svg element attribute
-  SVG.Element.prototype.attr = function(v) {
-    if (typeof v == 'object')
-      for (var k in v)
-        this.setAttribute(k, v[k]);
-    else if (arguments.length == 2)
-      this.setAttribute(arguments[0], arguments[1]);
-    
-    return this;
-  };
+    // get parent document
+    parentDoc: function() {
+      return this._parent(SVG.Document);
+    },
   
-  // get bounding box
-  SVG.Element.prototype.getBBox = function() {
-    return this.svgElement.getBBox();
-  };
+    // get parent svg wrapper
+    parentSVG: function() {
+      return this.parentDoc();
+    },
   
-  // private: find svg parent
-  SVG.Element.prototype._findParent = function(pt) {
-    var e = this;
-    
-    while (e != null && !(e instanceof pt))
-      e = e.parent;
-    
-    return e;
-  };
+    //_D // set svg element attribute
+    //_D setAttribute: function(a, v, ns) {
+    //_D   this.attrs[a] = v;
+    //_D 
+    //_D   if (ns != null)
+    //_D     this.node.setAttributeNS(ns, a, v);
+    //_D   else
+    //_D     this.node.setAttribute(a, v);
+    //_D 
+    //_D   return this;
+    //_D },
+  
+    // set svg element attribute
+    attr: function(v) {
+      var a = arguments;
+      
+      this.attrs[a[0]] = a[1];
+      
+      if (typeof v == 'object')
+        for (var k in v)
+          this.attr(k, v[k]);
+          
+      else if (a.length == 2)
+        this.node.setAttribute(a[0], a[1]);
+        
+      else if (a.length == 3)
+        this.node.setAttributeNS(a[2], a[0], a[1]);
+  
+      return this;
+    },
   
+    // get bounding box
+    bbox: function() {
+      return this.node.getBBox();
+    },
   
+    // private: find svg parent
+    _parent: function(pt) {
+      var e = this;
   
+      while (e != null && !(e instanceof pt))
+        e = e.parent;
   
+      return e;
+    }
+    
+  });
 
 
-  SVG.Document = function Document(c) {
-    this.constructor.call(this, SVG.createElement('svg'));
+  SVG.Document = function Document(e) {
+    this.constructor.call(this, SVG.create('svg'));
     
-    this.setAttribute('xmlns', SVG.namespace);
-    this.setAttribute('version', '1.1');
-    this.setAttribute('xlink', 'http://www.w3.org/1999/xlink', SVG.namespace);
+    this.attr('xmlns', SVG.ns);
+    this.attr('version', '1.1');
+    this.attr('xlink', SVG.xlink, SVG.ns);
     
-    document.getElementById(c).appendChild(this.svgElement);
+    if (typeof e == 'string')
+      e = document.getElementById(e);
+    
+    e.appendChild(this.node);
   };
   
   // inherit from SVG.Element
   SVG.Document.prototype = new SVG.Element();
   
   // include the container object
-  SVG.Document.include(SVG.Container);
+  SVG.Utils.merge(SVG.Document, SVG.Container);
 
   SVG.Defs = function Defs() {
-    this.constructor.call(this, SVG.createElement('defs'));
+    this.constructor.call(this, SVG.create('defs'));
   };
   
   // inherit from SVG.Element
   SVG.Defs.prototype = new SVG.Element();
   
-  // define clippath
-  SVG.Defs.prototype.clipPath = function() {
-    var e = new SVG.ClipPath();
-    this.add(e);
+  // include the container object
+  SVG.Utils.merge(SVG.Defs, SVG.Container);
+  
+  // Add def-specific functions
+  SVG.Utils.merge(SVG.Defs, {
     
-    return e;
-  };
+    // define clippath
+    clipPath: function() {
+      var e = new SVG.ClipPath();
+      this.add(e);
   
-  // include the container object
-  SVG.Defs.include(SVG.Container);
+      return e;
+    }
+    
+  });
 
   SVG.Shape = function Shape(element) {
     this.constructor.call(this, element);
@@ -310,160 +324,191 @@
   // inherit from SVG.Element
   SVG.Shape.prototype = new SVG.Element();
   
-  // set fill color and opacity
-  SVG.Shape.prototype.fill = function(fill) {
-    if (fill.color != null)
-      this.setAttribute('fill', fill.color);
+  // Add shape-specific functions
+  SVG.Utils.merge(SVG.Shape, {
     
-    if (fill.opacity != null)
-      this.setAttribute('fill-opacity', fill.opacity);
-    
-    return this;
-  };
+    // set fill color and opacity
+    fill: function(fill) {
+      if (fill.color != null)
+        this.attr('fill', fill.color);
   
-  // set stroke color and opacity
-  SVG.Shape.prototype.stroke = function(stroke) {
-    if (stroke.color != null)
-      this.setAttribute('stroke', stroke.color);
-    
-    if (stroke.width != null)
-      this.setAttribute('stroke-width', stroke.width);
-    
-    if (stroke.opacity != null)
-      this.setAttribute('stroke-opacity', stroke.opacity);
-    
-    if (this.attributes['fill-opacity'] == null)
-      this.fill({ opacity: 0 });
+      if (fill.opacity != null)
+        this.attr('fill-opacity', fill.opacity);
+  
+      return this;
+    },
+  
+    // set stroke color and opacity
+    stroke: function(stroke) {
+      if (stroke.color != null)
+        this.attr('stroke', stroke.color);
+  
+      if (stroke.width != null)
+        this.attr('stroke-width', stroke.width);
+  
+      if (stroke.opacity != null)
+        this.attr('stroke-opacity', stroke.opacity);
+  
+      if (this.attrs['fill-opacity'] == null)
+        this.fill({ opacity: 0 });
+  
+      return this;
+    }
     
-    return this;
-  };
+  });
 
   SVG.Rect = function Rect() {
-    this.constructor.call(this, SVG.createElement('rect'));
+    this.constructor.call(this, SVG.create('rect'));
   };
   
   // inherit from SVG.Shape
   SVG.Rect.prototype = new SVG.Shape();
 
   SVG.Circle = function Circle() {
-    this.constructor.call(this, SVG.createElement('circle'));
+    this.constructor.call(this, SVG.create('circle'));
   };
   
   // inherit from SVG.Shape
   SVG.Circle.prototype = new SVG.Shape();
   
-  // custom move function
-  SVG.Circle.prototype.move = function(x, y) {
-    this.attributes.x = x;
-    this.attributes.y = y;
-    this.center();
+  // Add circle-specific functions
+  SVG.Utils.merge(SVG.Circle, {
     
-    return this;
-  };
+    // custom move function
+    move: function(x, y) {
+      this.attrs.x = x;
+      this.attrs.y = y;
+      this.center();
   
-  // custom size function
-  SVG.Circle.prototype.size = function(w, h) {
-    this.setAttribute('r', w / 2);
-    this.center();
-    
-    return this;
-  };
+      return this;
+    },
   
-  // private: center 
-  SVG.Circle.prototype.center = function(cx, cy) {
-    var r = this.attributes.r || 0;
+    // custom size function
+    size: function(w, h) {
+      this.attr('r', w / 2);
+      this.center();
+  
+      return this;
+    },
+  
+    // private: center 
+    center: function(cx, cy) {
+      var r = this.attrs.r || 0;
+  
+      this.attr('cx', cx || ((this.attrs.x || 0) + r));
+      this.attr('cy', cy || ((this.attrs.y || 0) + r));
+    }
     
-    this.setAttribute('cx', cx || ((this.attributes.x || 0) + r));
-    this.setAttribute('cy', cy || ((this.attributes.y || 0) + r));
-  };
+  });
 
   SVG.Ellipse = function Ellipse() {
-    this.constructor.call(this, SVG.createElement('ellipse'));
+    this.constructor.call(this, SVG.create('ellipse'));
   };
   
   // inherit from SVG.Shape
   SVG.Ellipse.prototype = new SVG.Shape();
   
-  // custom move function
-  SVG.Ellipse.prototype.move = function(x, y) {
-    this.attributes.x = x;
-    this.attributes.y = y;
-    this.center();
+  // Add ellipse-specific functions
+  SVG.Utils.merge(SVG.Ellipse, {
     
-    return this;
-  };
+    // custom move function
+    move: function(x, y) {
+      this.attrs.x = x;
+      this.attrs.y = y;
+      this.center();
   
-  // custom size function
-  SVG.Ellipse.prototype.size = function(w, h) {
-    this.setAttribute('rx', w / 2);
-    this.setAttribute('ry', h / 2);
-    this.center();
-    
-    return this; 
-  };
+      return this;
+    },
   
-  SVG.Ellipse.prototype.center = function(cx, cy) {
-    this.setAttribute('cx', cx || ((this.attributes.x || 0) + (this.attributes.rx || 0)));
-    this.setAttribute('cy', cy || ((this.attributes.y || 0) + (this.attributes.ry || 0)));
-  };
+    // custom size function
+    size: function(w, h) {
+      this.attr('rx', w / 2);
+      this.attr('ry', h / 2);
+      this.center();
+  
+      return this; 
+    },
+  
+    center: function(cx, cy) {
+      this.attr('cx', cx || ((this.attrs.x || 0) + (this.attrs.rx || 0)));
+      this.attr('cy', cy || ((this.attrs.y || 0) + (this.attrs.ry || 0)));
+    }
+    
+  });
+
 
   SVG.Path = function Path() {
-    this.constructor.call(this, SVG.createElement('path'));
+    this.constructor.call(this, SVG.create('path'));
   };
   
   // inherit from SVG.Shape
   SVG.Path.prototype = new SVG.Shape();
   
-  // set path data
-  SVG.Path.prototype.data = function(d) {
-    this.setAttribute('d', d);
-    return this;
-  };
+  // Add path-specific functions
+  SVG.Utils.merge(SVG.Path, {
+    
+    // set path data
+    data: function(d) {
+      this.attr('d', d);
+      return this;
+    }
+    
+  });
 
   SVG.Image = function Image() {
-    this.constructor.call(this, SVG.createElement('image'));
+    this.constructor.call(this, SVG.create('image'));
   };
   
   // inherit from SVG.Element
   SVG.Image.prototype = new SVG.Element();
   
-  // (re)load image
-  SVG.Image.prototype.load = function(url) {
-    this.setAttribute('href', url, SVG.xlink);
-    return this;
-  };
-  
   // include the container object
-  SVG.Image.include(SVG.Container);
+  SVG.Utils.merge(SVG.Image, SVG.Container);
+  
+  // Add image-specific functions
+  SVG.Utils.merge(SVG.Image, {
+    
+    // (re)load image
+    load: function(u) {
+      this.attr('href', u, SVG.xlink);
+      return this;
+    }
+    
+  });
 
   SVG.Group = function Group() {
-    this.constructor.call(this, SVG.createElement("g"));
+    this.constructor.call(this, SVG.create('g'));
   };
   
   // inherit from SVG.Element
   SVG.Group.prototype = new SVG.Element();
   
-  // group rotation
-  SVG.Group.prototype.rotate = function(d) {
-    this.setAttribute('transform', 'rotate(' + d + ')');
-    return this;
-  };
-  
   // include the container object
-  SVG.Group.include(SVG.Container);
+  SVG.Utils.merge(SVG.Group, SVG.Container);
+  
+  // Add group-specific functions
+  SVG.Utils.merge(SVG.Group, {
+    
+    // group rotation
+    rotate: function(d) {
+      this.attr('transform', 'rotate(' + d + ')');
+      return this;
+    }
+    
+  });
 
   var clipID = 0;
   
   SVG.ClipPath = function ClipPath() {
-    this.constructor.call(this, SVG.createElement('clipPath'));
+    this.constructor.call(this, SVG.create('clipPath'));
     this.id = '_' + (clipID++);
-    this.setAttribute('id', this.id);
+    this.attr('id', this.id);
   };
   
   // inherit from SVG.Element
   SVG.ClipPath.prototype = new SVG.Element();
   
   // include the container object
-  SVG.ClipPath.include(SVG.Container);
+  SVG.Utils.merge(SVG.ClipPath, SVG.Container);
 
 }).call(this);
diff --git a/dist/svg.min.js b/dist/svg.min.js
index ee616ba..cc7eb88 100644
--- a/dist/svg.min.js
+++ b/dist/svg.min.js
@@ -1,2 +1,2 @@
-/* svg.js 0.1 - svg container object element document defs shape rect circle ellipse path image group clip_path - svgjs.com/license */
-(function(){var e={namespace:"http://www.w3.org/2000/svg",xlink:"http://www.w3.org/1999/xlink",createElement:function(e){return document.createElementNS(this.namespace,e)}};this.SVG=e,e.Container={add:function(e){return this.addAt(e)},addAt:function(e,t){return this.contains(e)||(t=t==null?this.children().length:t,this.children().splice(t,0,e),this.svgElement.insertBefore(e.svgElement,this.svgElement.childNodes[t+1]),e.parent=this),this},contains:function(e){return Array.prototype.indexOf.call(this.children(),e)>=0},children:function(){return this._children||[]},sendBack:function(e){var t=this.children().indexOf(e);if(t!==-1)return this.remove(e).addAt(e,t-1)},bringForward:function(e){var t=this.children().indexOf(e);if(t!==-1)return this.remove(e).addAt(e,t+1)},bringToFront:function(e){return this.contains(e)&&this.remove(e).add(e),this},sendToBottom:function(e){return this.contains(e)&&this.remove(e).addAt(e,0),this},remove:function(e){return this.removeAt(this.children().indexOf(e))},removeAt:function(e){if(0<=e&&e<this.children().length){var t=this.children()[e];this.children().splice(e,1),this.svgElement.removeChild(t.svgElement),t.parent=null}return this},defs:function(){return this._defs==null&&(this._defs=new e.Defs,this.add(this._defs)),this._defs},group:function(){var t=new e.Group;return this.add(t),t},rect:function(t){return this.place(new e.Rect,t)},circle:function(t){var n;return t!=null&&(n={x:t.x,y:t.y},t.r||t.radius?n.width=n.height=(t.r||t.radius)*2:n.width=n.height=t.width||t.height),this.place(new e.Circle,n)},ellipse:function(t){var n;return t!=null&&(n={x:t.x,y:t.y},t.width&&(n.width=t.width),t.height&&(n.height=t.height),t.rx&&(n.width=t.rx*2),t.ry&&(n.height=t.ry*2)),this.place(new e.Ellipse,n)},path:function(t){return this.place(new e.Path,t)},image:function(t){return this.place(new e.Image,t)},place:function(e,t){return t!=null&&(t.x!=null&&t.y!=null&&e.move(t.x,t.y),t.width!=null&&t.height!=null&&e.size(t.width,t.height),t.data!=null&&e.data(t.data),t.src!=null&&e.load(t.src)),this.add(e),e}},Object.prototype.include=function(e){for(var t in e)this.prototype[t]=e[t];return e.included!=null&&e.included.apply(this),this},e.Element=function(t){this.svgElement=t,this.attributes={}},e.Element.prototype.move=function(e,t){return this.setAttribute("x",e),this.setAttribute("y",t),this},e.Element.prototype.opacity=function(e){return this.setAttribute("opacity",Math.max(0,Math.min(1,e)))},e.Element.prototype.size=function(e,t){return this.setAttribute("width",e),this.setAttribute("height",t),this},e.Element.prototype.clip=function(e){var t=this.parentSVG().defs().clipPath();return e(t),this.clipTo(t)},e.Element.prototype.clipTo=function(e){return this.setAttribute("clip-path","url(#"+e.id+")")},e.Element.prototype.destroy=function(){return this.parent!=null?this.parent.remove(this):void 0},e.Element.prototype.parentDoc=function(){return this._findParent(e.Document)},e.Element.prototype.parentSVG=function(){return this.parentDoc()},e.Element.prototype.setAttribute=function(e,t,n){return this.attributes[e]=t,n!=null?this.svgElement.setAttributeNS(n,e,t):this.svgElement.setAttribute(e,t),this},e.Element.prototype.attr=function(e){if(typeof e=="object")for(var t in e)this.setAttribute(t,e[t]);else arguments.length==2&&this.setAttribute(arguments[0],arguments[1]);return this},e.Element.prototype.getBBox=function(){return this.svgElement.getBBox()},e.Element.prototype._findParent=function(e){var t=this;while(t!=null&&!(t instanceof e))t=t.parent;return t},e.Document=function(n){this.constructor.call(this,e.createElement("svg")),this.setAttribute("xmlns",e.namespace),this.setAttribute("version","1.1"),this.setAttribute("xlink","http://www.w3.org/1999/xlink",e.namespace),document.getElementById(n).appendChild(this.svgElement)},e.Document.prototype=new e.Element,e.Document.include(e.Container),e.Defs=function(){this.constructor.call(this,e.createElement("defs"))},e.Defs.prototype=new e.Element,e.Defs.prototype.clipPath=function(){var t=new e.ClipPath;return this.add(t),t},e.Defs.include(e.Container),e.Shape=function(t){this.constructor.call(this,t)},e.Shape.prototype=new e.Element,e.Shape.prototype.fill=function(e){return e.color!=null&&this.setAttribute("fill",e.color),e.opacity!=null&&this.setAttribute("fill-opacity",e.opacity),this},e.Shape.prototype.stroke=function(e){return e.color!=null&&this.setAttribute("stroke",e.color),e.width!=null&&this.setAttribute("stroke-width",e.width),e.opacity!=null&&this.setAttribute("stroke-opacity",e.opacity),this.attributes["fill-opacity"]==null&&this.fill({opacity:0}),this},e.Rect=function(){this.constructor.call(this,e.createElement("rect"))},e.Rect.prototype=new e.Shape,e.Circle=function(){this.constructor.call(this,e.createElement("circle"))},e.Circle.prototype=new e.Shape,e.Circle.prototype.move=function(e,t){return this.attributes.x=e,this.attributes.y=t,this.center(),this},e.Circle.prototype.size=function(e,t){return this.setAttribute("r",e/2),this.center(),this},e.Circle.prototype.center=function(e,t){var n=this.attributes.r||0;this.setAttribute("cx",e||(this.attributes.x||0)+n),this.setAttribute("cy",t||(this.attributes.y||0)+n)},e.Ellipse=function(){this.constructor.call(this,e.createElement("ellipse"))},e.Ellipse.prototype=new e.Shape,e.Ellipse.prototype.move=function(e,t){return this.attributes.x=e,this.attributes.y=t,this.center(),this},e.Ellipse.prototype.size=function(e,t){return this.setAttribute("rx",e/2),this.setAttribute("ry",t/2),this.center(),this},e.Ellipse.prototype.center=function(e,t){this.setAttribute("cx",e||(this.attributes.x||0)+(this.attributes.rx||0)),this.setAttribute("cy",t||(this.attributes.y||0)+(this.attributes.ry||0))},e.Path=function(){this.constructor.call(this,e.createElement("path"))},e.Path.prototype=new e.Shape,e.Path.prototype.data=function(e){return this.setAttribute("d",e),this},e.Image=function(){this.constructor.call(this,e.createElement("image"))},e.Image.prototype=new e.Element,e.Image.prototype.load=function(t){return this.setAttribute("href",t,e.xlink),this},e.Image.include(e.Container),e.Group=function(){this.constructor.call(this,e.createElement("g"))},e.Group.prototype=new e.Element,e.Group.prototype.rotate=function(e){return this.setAttribute("transform","rotate("+e+")"),this},e.Group.include(e.Container);var t=0;e.ClipPath=function(){this.constructor.call(this,e.createElement("clipPath")),this.id="_"+t++,this.setAttribute("id",this.id)},e.ClipPath.prototype=new e.Element,e.ClipPath.include(e.Container)}).call(this);
\ No newline at end of file
+/* svg.js 0.1 - svg utils container element document defs shape rect circle ellipse path image group clip_path - svgjs.com/license */
+(function(){this.SVG={ns:"http://www.w3.org/2000/svg",xlink:"http://www.w3.org/1999/xlink",create:function(e){return document.createElementNS(this.ns,e)}},this.svg=function(e){return new SVG.Document(e)},SVG.Utils={merge:function(e,t){for(var n in t)e.prototype[n]=t[n]}},SVG.Container={add:function(e){return this.addAt(e)},addAt:function(e,t){return this.contains(e)||(t=t==null?this.children().length:t,this.children().splice(t,0,e),this.node.insertBefore(e.node,this.node.childNodes[t+1]),e.parent=this),this},contains:function(e){return Array.prototype.indexOf.call(this.children(),e)>=0},children:function(){return this._children||[]},sendBack:function(e){var t=this.children().indexOf(e);if(t!==-1)return this.remove(e).addAt(e,t-1)},bringForward:function(e){var t=this.children().indexOf(e);if(t!==-1)return this.remove(e).addAt(e,t+1)},bringToFront:function(e){return this.contains(e)&&this.remove(e).add(e),this},sendToBottom:function(e){return this.contains(e)&&this.remove(e).addAt(e,0),this},remove:function(e){return this.removeAt(this.children().indexOf(e))},removeAt:function(e){if(0<=e&&e<this.children().length){var t=this.children()[e];this.children().splice(e,1),this.node.removeChild(t.node),t.parent=null}return this},defs:function(){return this._defs==null&&(this._defs=new SVG.Defs,this.add(this._defs)),this._defs},group:function(){var e=new SVG.Group;return this.add(e),e},rect:function(e){return this.place(new SVG.Rect,e)},circle:function(e){var t;return e!=null&&(t={x:e.x,y:e.y},e.r||e.radius?t.width=t.height=(e.r||e.radius)*2:t.width=t.height=e.width||e.height),this.place(new SVG.Circle,t)},ellipse:function(e){var t;return e!=null&&(t={x:e.x,y:e.y},e.width&&(t.width=e.width),e.height&&(t.height=e.height),e.rx&&(t.width=e.rx*2),e.ry&&(t.height=e.ry*2)),this.place(new SVG.Ellipse,t)},path:function(e){return this.place(new SVG.Path,e)},image:function(e){return this.place(new SVG.Image,e)},place:function(e,t){return t!=null&&(t.x!=null&&t.y!=null&&e.move(t.x,t.y),t.width!=null&&t.height!=null&&e.size(t.width,t.height),t.data!=null&&e.data(t.data),t.src!=null&&e.load(t.src)),this.add(e),e}},SVG.Element=function(t){this.node=t,this.attrs={}},SVG.Utils.merge(SVG.Element,{move:function(e,t){return this.attr("x",e),this.attr("y",t),this},opacity:function(e){return this.attr("opacity",Math.max(0,Math.min(1,e)))},size:function(e,t){return this.attr("width",e),this.attr("height",t),this},clip:function(e){var t=this.parentSVG().defs().clipPath();return e(t),this.clipTo(t)},clipTo:function(e){return this.attr("clip-path","url(#"+e.id+")")},destroy:function(){return this.parent!=null?this.parent.remove(this):void 0},parentDoc:function(){return this._parent(SVG.Document)},parentSVG:function(){return this.parentDoc()},attr:function(e){var t=arguments;this.attrs[t[0]]=t[1];if(typeof e=="object")for(var n in e)this.attr(n,e[n]);else t.length==2?this.node.setAttribute(t[0],t[1]):t.length==3&&this.node.setAttributeNS(t[2],t[0],t[1]);return this},bbox:function(){return this.node.getBBox()},_parent:function(e){var t=this;while(t!=null&&!(t instanceof e))t=t.parent;return t}}),SVG.Document=function(t){this.constructor.call(this,SVG.create("svg")),this.attr("xmlns",SVG.ns),this.attr("version","1.1"),this.attr("xlink",SVG.xlink,SVG.ns),typeof t=="string"&&(t=document.getElementById(t)),t.appendChild(this.node)},SVG.Document.prototype=new SVG.Element,SVG.Utils.merge(SVG.Document,SVG.Container),SVG.Defs=function(){this.constructor.call(this,SVG.create("defs"))},SVG.Defs.prototype=new SVG.Element,SVG.Utils.merge(SVG.Defs,SVG.Container),SVG.Utils.merge(SVG.Defs,{clipPath:function(){var e=new SVG.ClipPath;return this.add(e),e}}),SVG.Shape=function(t){this.constructor.call(this,t)},SVG.Shape.prototype=new SVG.Element,SVG.Utils.merge(SVG.Shape,{fill:function(e){return e.color!=null&&this.attr("fill",e.color),e.opacity!=null&&this.attr("fill-opacity",e.opacity),this},stroke:function(e){return e.color!=null&&this.attr("stroke",e.color),e.width!=null&&this.attr("stroke-width",e.width),e.opacity!=null&&this.attr("stroke-opacity",e.opacity),this.attrs["fill-opacity"]==null&&this.fill({opacity:0}),this}}),SVG.Rect=function(){this.constructor.call(this,SVG.create("rect"))},SVG.Rect.prototype=new SVG.Shape,SVG.Circle=function(){this.constructor.call(this,SVG.create("circle"))},SVG.Circle.prototype=new SVG.Shape,SVG.Utils.merge(SVG.Circle,{move:function(e,t){return this.attrs.x=e,this.attrs.y=t,this.center(),this},size:function(e,t){return this.attr("r",e/2),this.center(),this},center:function(e,t){var n=this.attrs.r||0;this.attr("cx",e||(this.attrs.x||0)+n),this.attr("cy",t||(this.attrs.y||0)+n)}}),SVG.Ellipse=function(){this.constructor.call(this,SVG.create("ellipse"))},SVG.Ellipse.prototype=new SVG.Shape,SVG.Utils.merge(SVG.Ellipse,{move:function(e,t){return this.attrs.x=e,this.attrs.y=t,this.center(),this},size:function(e,t){return this.attr("rx",e/2),this.attr("ry",t/2),this.center(),this},center:function(e,t){this.attr("cx",e||(this.attrs.x||0)+(this.attrs.rx||0)),this.attr("cy",t||(this.attrs.y||0)+(this.attrs.ry||0))}}),SVG.Path=function(){this.constructor.call(this,SVG.create("path"))},SVG.Path.prototype=new SVG.Shape,SVG.Utils.merge(SVG.Path,{data:function(e){return this.attr("d",e),this}}),SVG.Image=function(){this.constructor.call(this,SVG.create("image"))},SVG.Image.prototype=new SVG.Element,SVG.Utils.merge(SVG.Image,SVG.Container),SVG.Utils.merge(SVG.Image,{load:function(e){return this.attr("href",e,SVG.xlink),this}}),SVG.Group=function(){this.constructor.call(this,SVG.create("g"))},SVG.Group.prototype=new SVG.Element,SVG.Utils.merge(SVG.Group,SVG.Container),SVG.Utils.merge(SVG.Group,{rotate:function(e){return this.attr("transform","rotate("+e+")"),this}});var e=0;SVG.ClipPath=function(){this.constructor.call(this,SVG.create("clipPath")),this.id="_"+e++,this.attr("id",this.id)},SVG.ClipPath.prototype=new SVG.Element,SVG.Utils.merge(SVG.ClipPath,SVG.Container)}).call(this);
\ No newline at end of file
diff --git a/src/circle.js b/src/circle.js
index f2549c7..890d1d3 100644
--- a/src/circle.js
+++ b/src/circle.js
@@ -1,32 +1,37 @@
 
 SVG.Circle = function Circle() {
-  this.constructor.call(this, SVG.createElement('circle'));
+  this.constructor.call(this, SVG.create('circle'));
 };
 
 // inherit from SVG.Shape
 SVG.Circle.prototype = new SVG.Shape();
 
-// custom move function
-SVG.Circle.prototype.move = function(x, y) {
-  this.attributes.x = x;
-  this.attributes.y = y;
-  this.center();
+// Add circle-specific functions
+SVG.Utils.merge(SVG.Circle, {
   
-  return this;
-};
+  // custom move function
+  move: function(x, y) {
+    this.attrs.x = x;
+    this.attrs.y = y;
+    this.center();
 
-// custom size function
-SVG.Circle.prototype.size = function(w, h) {
-  this.setAttribute('r', w / 2);
-  this.center();
-  
-  return this;
-};
+    return this;
+  },
+
+  // custom size function
+  size: function(w, h) {
+    this.attr('r', w / 2);
+    this.center();
+
+    return this;
+  },
+
+  // private: center 
+  center: function(cx, cy) {
+    var r = this.attrs.r || 0;
 
-// private: center 
-SVG.Circle.prototype.center = function(cx, cy) {
-  var r = this.attributes.r || 0;
+    this.attr('cx', cx || ((this.attrs.x || 0) + r));
+    this.attr('cy', cy || ((this.attrs.y || 0) + r));
+  }
   
-  this.setAttribute('cx', cx || ((this.attributes.x || 0) + r));
-  this.setAttribute('cy', cy || ((this.attributes.y || 0) + r));
-};
\ No newline at end of file
+});
\ No newline at end of file
diff --git a/src/clip_path.js b/src/clip_path.js
index 2eece49..57bff82 100644
--- a/src/clip_path.js
+++ b/src/clip_path.js
@@ -2,13 +2,13 @@
 var clipID = 0;
 
 SVG.ClipPath = function ClipPath() {
-  this.constructor.call(this, SVG.createElement('clipPath'));
+  this.constructor.call(this, SVG.create('clipPath'));
   this.id = '_' + (clipID++);
-  this.setAttribute('id', this.id);
+  this.attr('id', this.id);
 };
 
 // inherit from SVG.Element
 SVG.ClipPath.prototype = new SVG.Element();
 
 // include the container object
-SVG.ClipPath.include(SVG.Container);
\ No newline at end of file
+SVG.Utils.merge(SVG.ClipPath, SVG.Container);
\ No newline at end of file
diff --git a/src/container.js b/src/container.js
index 9f13282..cc2fd4f 100644
--- a/src/container.js
+++ b/src/container.js
@@ -9,7 +9,7 @@ SVG.Container = {
     if (!this.contains(e)) {
       i = i == null ? this.children().length : i;
       this.children().splice(i, 0, e);
-      this.svgElement.insertBefore(e.svgElement, this.svgElement.childNodes[i + 1]);
+      this.node.insertBefore(e.node, this.node.childNodes[i + 1]);
       e.parent = this;
     }
     
@@ -58,7 +58,7 @@ SVG.Container = {
     if (0 <= i && i < this.children().length) {
       var e = this.children()[i];
       this.children().splice(i, 1);
-      this.svgElement.removeChild(e.svgElement);
+      this.node.removeChild(e.node);
       e.parent = null;
     }
     
diff --git a/src/defs.js b/src/defs.js
index 4661a54..4c252a5 100644
--- a/src/defs.js
+++ b/src/defs.js
@@ -1,17 +1,23 @@
+
 SVG.Defs = function Defs() {
-  this.constructor.call(this, SVG.createElement('defs'));
+  this.constructor.call(this, SVG.create('defs'));
 };
 
 // inherit from SVG.Element
 SVG.Defs.prototype = new SVG.Element();
 
-// define clippath
-SVG.Defs.prototype.clipPath = function() {
-  var e = new SVG.ClipPath();
-  this.add(e);
+// include the container object
+SVG.Utils.merge(SVG.Defs, SVG.Container);
+
+// Add def-specific functions
+SVG.Utils.merge(SVG.Defs, {
   
-  return e;
-};
+  // define clippath
+  clipPath: function() {
+    var e = new SVG.ClipPath();
+    this.add(e);
 
-// include the container object
-SVG.Defs.include(SVG.Container);
\ No newline at end of file
+    return e;
+  }
+  
+});
\ No newline at end of file
diff --git a/src/document.js b/src/document.js
index a510c44..32780c1 100644
--- a/src/document.js
+++ b/src/document.js
@@ -1,16 +1,19 @@
 
-SVG.Document = function Document(c) {
-  this.constructor.call(this, SVG.createElement('svg'));
+SVG.Document = function Document(e) {
+  this.constructor.call(this, SVG.create('svg'));
   
-  this.setAttribute('xmlns', SVG.namespace);
-  this.setAttribute('version', '1.1');
-  this.setAttribute('xlink', 'http://www.w3.org/1999/xlink', SVG.namespace);
+  this.attr('xmlns', SVG.ns);
+  this.attr('version', '1.1');
+  this.attr('xlink', SVG.xlink, SVG.ns);
   
-  document.getElementById(c).appendChild(this.svgElement);
+  if (typeof e == 'string')
+    e = document.getElementById(e);
+  
+  e.appendChild(this.node);
 };
 
 // inherit from SVG.Element
 SVG.Document.prototype = new SVG.Element();
 
 // include the container object
-SVG.Document.include(SVG.Container);
\ No newline at end of file
+SVG.Utils.merge(SVG.Document, SVG.Container);
\ No newline at end of file
diff --git a/src/element.js b/src/element.js
index 3dcf785..7926e1f 100644
--- a/src/element.js
+++ b/src/element.js
@@ -1,99 +1,105 @@
 
-SVG.Element = function Element(svgElement) {
-  this.svgElement = svgElement;
-  this.attributes = {};
+SVG.Element = function Element(node) {
+  this.node = node;
+  this.attrs = {};
 };
 
-//-D // inherit from SVG.Object
-//-D SVG.Element.prototype = new SVG.Object();
-
-// move element to given x and y values
-SVG.Element.prototype.move = function(x, y) {
-  this.setAttribute('x', x);
-  this.setAttribute('y', y);
-  
-  return this;
-};
-
-// set element opacity
-SVG.Element.prototype.opacity = function(o) {
-  return this.setAttribute('opacity', Math.max(0, Math.min(1, o)));
-};
-
-// set element size to given width and height
-SVG.Element.prototype.size = function(w, h) {
-  this.setAttribute('width', w);
-  this.setAttribute('height', h);
-  
-  return this;
-};
-
-// clip element using another element
-SVG.Element.prototype.clip = function(block) {
-  var p = this.parentSVG().defs().clipPath();
-  block(p);
-  
-  return this.clipTo(p);
-};
-
-// distribute clipping path to svg element
-SVG.Element.prototype.clipTo = function(p) {
-  return this.setAttribute('clip-path', 'url(#' + p.id + ')');
-};
-
-// remove element
-SVG.Element.prototype.destroy = function() {
-  return this.parent != null ? this.parent.remove(this) : void 0;
-};
-
-// get parent document
-SVG.Element.prototype.parentDoc = function() {
-  return this._findParent(SVG.Document);
-};
-
-// get parent svg wrapper
-SVG.Element.prototype.parentSVG = function() {
-  return this.parentDoc();
-};
-
-// set svg element attribute
-SVG.Element.prototype.setAttribute = function(a, v, ns) {
-  this.attributes[a] = v;
+// Add element-specific functions
+SVG.Utils.merge(SVG.Element, {
   
-  if (ns != null)
-    this.svgElement.setAttributeNS(ns, a, v);
-  else
-    this.svgElement.setAttribute(a, v);
+  // move element to given x and y values
+  move: function(x, y) {
+    this.attr('x', x);
+    this.attr('y', y);
+
+    return this;
+  },
+
+  // set element opacity
+  opacity: function(o) {
+    return this.attr('opacity', Math.max(0, Math.min(1, o)));
+  },
+
+  // set element size to given width and height
+  size: function(w, h) {
+    this.attr('width', w);
+    this.attr('height', h);
+
+    return this;
+  },
+
+  // clip element using another element
+  clip: function(block) {
+    var p = this.parentSVG().defs().clipPath();
+    block(p);
+
+    return this.clipTo(p);
+  },
+
+  // distribute clipping path to svg element
+  clipTo: function(p) {
+    return this.attr('clip-path', 'url(#' + p.id + ')');
+  },
+
+  // remove element
+  destroy: function() {
+    return this.parent != null ? this.parent.remove(this) : void 0;
+  },
+
+  // get parent document
+  parentDoc: function() {
+    return this._parent(SVG.Document);
+  },
+
+  // get parent svg wrapper
+  parentSVG: function() {
+    return this.parentDoc();
+  },
+
+  //_D // set svg element attribute
+  //_D setAttribute: function(a, v, ns) {
+  //_D   this.attrs[a] = v;
+  //_D 
+  //_D   if (ns != null)
+  //_D     this.node.setAttributeNS(ns, a, v);
+  //_D   else
+  //_D     this.node.setAttribute(a, v);
+  //_D 
+  //_D   return this;
+  //_D },
+
+  // set svg element attribute
+  attr: function(v) {
+    var a = arguments;
+    
+    this.attrs[a[0]] = a[1];
+    
+    if (typeof v == 'object')
+      for (var k in v)
+        this.attr(k, v[k]);
+        
+    else if (a.length == 2)
+      this.node.setAttribute(a[0], a[1]);
+      
+    else if (a.length == 3)
+      this.node.setAttributeNS(a[2], a[0], a[1]);
+
+    return this;
+  },
+
+  // get bounding box
+  bbox: function() {
+    return this.node.getBBox();
+  },
+
+  // private: find svg parent
+  _parent: function(pt) {
+    var e = this;
+
+    while (e != null && !(e instanceof pt))
+      e = e.parent;
+
+    return e;
+  }
   
-  return this;
-};
-
-// set svg element attribute
-SVG.Element.prototype.attr = function(v) {
-  if (typeof v == 'object')
-    for (var k in v)
-      this.setAttribute(k, v[k]);
-  else if (arguments.length == 2)
-    this.setAttribute(arguments[0], arguments[1]);
-  
-  return this;
-};
-
-// get bounding box
-SVG.Element.prototype.getBBox = function() {
-  return this.svgElement.getBBox();
-};
-
-// private: find svg parent
-SVG.Element.prototype._findParent = function(pt) {
-  var e = this;
-  
-  while (e != null && !(e instanceof pt))
-    e = e.parent;
-  
-  return e;
-};
-
-
-
-
+});
diff --git a/src/ellipse.js b/src/ellipse.js
index 41443b9..1cfd0c1 100644
--- a/src/ellipse.js
+++ b/src/ellipse.js
@@ -1,30 +1,35 @@
 
 SVG.Ellipse = function Ellipse() {
-  this.constructor.call(this, SVG.createElement('ellipse'));
+  this.constructor.call(this, SVG.create('ellipse'));
 };
 
 // inherit from SVG.Shape
 SVG.Ellipse.prototype = new SVG.Shape();
 
-// custom move function
-SVG.Ellipse.prototype.move = function(x, y) {
-  this.attributes.x = x;
-  this.attributes.y = y;
-  this.center();
+// Add ellipse-specific functions
+SVG.Utils.merge(SVG.Ellipse, {
   
-  return this;
-};
+  // custom move function
+  move: function(x, y) {
+    this.attrs.x = x;
+    this.attrs.y = y;
+    this.center();
 
-// custom size function
-SVG.Ellipse.prototype.size = function(w, h) {
-  this.setAttribute('rx', w / 2);
-  this.setAttribute('ry', h / 2);
-  this.center();
-  
-  return this; 
-};
+    return this;
+  },
 
-SVG.Ellipse.prototype.center = function(cx, cy) {
-  this.setAttribute('cx', cx || ((this.attributes.x || 0) + (this.attributes.rx || 0)));
-  this.setAttribute('cy', cy || ((this.attributes.y || 0) + (this.attributes.ry || 0)));
-};
\ No newline at end of file
+  // custom size function
+  size: function(w, h) {
+    this.attr('rx', w / 2);
+    this.attr('ry', h / 2);
+    this.center();
+
+    return this; 
+  },
+
+  center: function(cx, cy) {
+    this.attr('cx', cx || ((this.attrs.x || 0) + (this.attrs.rx || 0)));
+    this.attr('cy', cy || ((this.attrs.y || 0) + (this.attrs.ry || 0)));
+  }
+  
+});
diff --git a/src/group.js b/src/group.js
index e46035f..2236c09 100644
--- a/src/group.js
+++ b/src/group.js
@@ -1,16 +1,21 @@
 
 SVG.Group = function Group() {
-  this.constructor.call(this, SVG.createElement("g"));
+  this.constructor.call(this, SVG.create('g'));
 };
 
 // inherit from SVG.Element
 SVG.Group.prototype = new SVG.Element();
 
-// group rotation
-SVG.Group.prototype.rotate = function(d) {
-  this.setAttribute('transform', 'rotate(' + d + ')');
-  return this;
-};
-
 // include the container object
-SVG.Group.include(SVG.Container);
\ No newline at end of file
+SVG.Utils.merge(SVG.Group, SVG.Container);
+
+// Add group-specific functions
+SVG.Utils.merge(SVG.Group, {
+  
+  // group rotation
+  rotate: function(d) {
+    this.attr('transform', 'rotate(' + d + ')');
+    return this;
+  }
+  
+});
\ No newline at end of file
diff --git a/src/image.js b/src/image.js
index 3c60f2a..bc1dc60 100644
--- a/src/image.js
+++ b/src/image.js
@@ -1,16 +1,21 @@
 
 SVG.Image = function Image() {
-  this.constructor.call(this, SVG.createElement('image'));
+  this.constructor.call(this, SVG.create('image'));
 };
 
 // inherit from SVG.Element
 SVG.Image.prototype = new SVG.Element();
 
-// (re)load image
-SVG.Image.prototype.load = function(url) {
-  this.setAttribute('href', url, SVG.xlink);
-  return this;
-};
-
 // include the container object
-SVG.Image.include(SVG.Container);
\ No newline at end of file
+SVG.Utils.merge(SVG.Image, SVG.Container);
+
+// Add image-specific functions
+SVG.Utils.merge(SVG.Image, {
+  
+  // (re)load image
+  load: function(u) {
+    this.attr('href', u, SVG.xlink);
+    return this;
+  }
+  
+});
\ No newline at end of file
diff --git a/src/object.js b/src/object.js
index ecf43ee..1ec7ecc 100644
--- a/src/object.js
+++ b/src/object.js
@@ -1,11 +1,31 @@
 
-Object.prototype.include = function(module) {
-  
-  for (var key in module)
-    this.prototype[key] = module[key];
-  
-  if (module.included != null)
-    module.included.apply(this);
-  
-  return this;
-};
\ No newline at end of file
+//SVG.Object = function Object() {};
+//
+//Object.prototype.include = function(module) {
+//  
+//  for (var key in module)
+//    this.prototype[key] = module[key];
+//  
+//  if (module.included != null)
+//    module.included.apply(this);
+//  
+//  return this;
+//};
+
+//SVG.Object = function Object() {};
+//
+//SVG.Object.moduleKeywords = ['included', 'extended'];
+//
+//SVG.Object.include = function(module) {
+//  var key, value, _ref;
+//  for (key in module) {
+//    value = module[key];
+//    if (Array.prototype.indexOf.call(this.moduleKeywords, key) < 0) {
+//      this.prototype[key] = value;
+//    }
+//  }
+//  if ((_ref = module.included) != null) {
+//    _ref.apply(this);
+//  }
+//  return this;
+//};
\ No newline at end of file
diff --git a/src/path.js b/src/path.js
index c064a91..ee4484f 100644
--- a/src/path.js
+++ b/src/path.js
@@ -1,13 +1,18 @@
 
 SVG.Path = function Path() {
-  this.constructor.call(this, SVG.createElement('path'));
+  this.constructor.call(this, SVG.create('path'));
 };
 
 // inherit from SVG.Shape
 SVG.Path.prototype = new SVG.Shape();
 
-// set path data
-SVG.Path.prototype.data = function(d) {
-  this.setAttribute('d', d);
-  return this;
-};
\ No newline at end of file
+// Add path-specific functions
+SVG.Utils.merge(SVG.Path, {
+  
+  // set path data
+  data: function(d) {
+    this.attr('d', d);
+    return this;
+  }
+  
+});
\ No newline at end of file
diff --git a/src/rect.js b/src/rect.js
index b08d68e..f286c5d 100644
--- a/src/rect.js
+++ b/src/rect.js
@@ -1,6 +1,6 @@
 
 SVG.Rect = function Rect() {
-  this.constructor.call(this, SVG.createElement('rect'));
+  this.constructor.call(this, SVG.create('rect'));
 };
 
 // inherit from SVG.Shape
diff --git a/src/shape.js b/src/shape.js
index 194ff84..a57b9f2 100644
--- a/src/shape.js
+++ b/src/shape.js
@@ -6,30 +6,35 @@ SVG.Shape = function Shape(element) {
 // inherit from SVG.Element
 SVG.Shape.prototype = new SVG.Element();
 
-// set fill color and opacity
-SVG.Shape.prototype.fill = function(fill) {
-  if (fill.color != null)
-    this.setAttribute('fill', fill.color);
+// Add shape-specific functions
+SVG.Utils.merge(SVG.Shape, {
   
-  if (fill.opacity != null)
-    this.setAttribute('fill-opacity', fill.opacity);
-  
-  return this;
-};
+  // set fill color and opacity
+  fill: function(fill) {
+    if (fill.color != null)
+      this.attr('fill', fill.color);
 
-// set stroke color and opacity
-SVG.Shape.prototype.stroke = function(stroke) {
-  if (stroke.color != null)
-    this.setAttribute('stroke', stroke.color);
-  
-  if (stroke.width != null)
-    this.setAttribute('stroke-width', stroke.width);
-  
-  if (stroke.opacity != null)
-    this.setAttribute('stroke-opacity', stroke.opacity);
-  
-  if (this.attributes['fill-opacity'] == null)
-    this.fill({ opacity: 0 });
+    if (fill.opacity != null)
+      this.attr('fill-opacity', fill.opacity);
+
+    return this;
+  },
+
+  // set stroke color and opacity
+  stroke: function(stroke) {
+    if (stroke.color != null)
+      this.attr('stroke', stroke.color);
+
+    if (stroke.width != null)
+      this.attr('stroke-width', stroke.width);
+
+    if (stroke.opacity != null)
+      this.attr('stroke-opacity', stroke.opacity);
+
+    if (this.attrs['fill-opacity'] == null)
+      this.fill({ opacity: 0 });
+
+    return this;
+  }
   
-  return this;
-};
\ No newline at end of file
+});
\ No newline at end of file
diff --git a/src/svg.js b/src/svg.js
index ebb0f87..b042f12 100644
--- a/src/svg.js
+++ b/src/svg.js
@@ -1,9 +1,13 @@
 
 this.SVG = {
-  namespace: "http://www.w3.org/2000/svg",
-  xlink:     "http://www.w3.org/1999/xlink",
+  ns:     'http://www.w3.org/2000/svg',
+  xlink:  'http://www.w3.org/1999/xlink',
   
-  createElement: function(e) {
-    return document.createElementNS(this.namespace, e);
+  create: function(e) {
+    return document.createElementNS(this.ns, e);
   }
+};
+
+this.svg = function(e) {
+  return new SVG.Document(e);
 };
\ No newline at end of file
diff --git a/src/utils.js b/src/utils.js
new file mode 100644
index 0000000..5cf1bda
--- /dev/null
+++ b/src/utils.js
@@ -0,0 +1,10 @@
+
+
+SVG.Utils = {
+  
+  merge: function(o, m) {
+    for (var k in m)
+      o.prototype[k] = m[k];
+  }
+  
+};
\ No newline at end of file