Added deep traversing, reorganizd modules

24 files changed, 383 insertions, 160 deletions

diff --git a/README.md b/README.md
index 3f30c23..a5975bd 100644
--- a/README.md
+++ b/README.md
@@ -504,6 +504,15 @@ draw.each(function(i, children) {
 })
 ```
 
+Deep traversing is also possible by passing true as the second argument:
+
+```javascript
+// draw.each(block, deep)
+draw.each(function(i, children) {
+  this.fill({ color: '#f06' })
+}, true)
+```
+
 ## Colors
 
 Svg.js has a dedicated color module handling different types of colors. Accepted values are:
@@ -752,7 +761,7 @@ var gradient = draw.gradient('linear', function(stop) {
   stop.at({ offset: 100, color: '#fff' })
 })
 
-var ellipse = draw.ellipse(80, 40).move(10, 10).fill({ color: gradient.fill() })
+var ellipse = draw.ellipse(80, 40).move(10, 10).fill({ color: gradient })
 
 rect.maskWith(ellipse)
 ```
@@ -873,7 +882,7 @@ The from and to values are also expressed in percent.
 Finally, to use the gradient on an element:
 
 ```javascript
-rect.attr({ fill: gradient.fill() })
+rect.attr({ fill: gradient })
 ```
 
 Radial gradients have a `radius()` method to define the outermost radius to where the inner color should develop:
@@ -928,7 +937,7 @@ var pattern = draw.pattern(20, 20, function(add) {
   add.rect(10, 10).move(0, 10).fill({ color: '#000', opacity: 0.5 })
 })
 
-var circle = draw.circle(200, 200).fill(pattern.fill())
+var circle = draw.circle(200, 200).fill(pattern)
 ```
 
 This will fill the circle with a checkered pattern. There is a lot more to patterns. Please refer to the [Patterns section](http://www.w3.org/TR/SVG/pservers.html#Patterns) of the SVG specification.
diff --git a/Rakefile b/Rakefile
index c741aed..c378745 100644
--- a/Rakefile
+++ b/Rakefile
@@ -1,4 +1,4 @@
-SVGJS_VERSION = '0.17'
+SVGJS_VERSION = '0.18'
 
 # all available modules in the correct loading order
 MODULES = %w[ svg regex default color viewbox bbox rbox element container fx event group arrange defs mask clip pattern gradient doc shape rect ellipse line poly path plotable image text nested sugar ]
diff --git a/dist/svg.js b/dist/svg.js
index 48f8f87..fa929a3 100644
--- a/dist/svg.js
+++ b/dist/svg.js
@@ -1,4 +1,4 @@
-/* svg.js v0.17 - svg regex default color viewbox bbox rbox element container fx event group arrange defs mask clip pattern gradient doc shape rect ellipse line poly path plotable image text nested sugar - svgjs.com/license */
+/* svg.js v0.18 - svg regex default color viewbox bbox rbox element container fx event group arrange defs mask clip pattern gradient doc shape rect ellipse line poly path plotable image text nested sugar - svgjs.com/license */
 ;(function() {
 
   this.SVG = function(element) {
@@ -281,6 +281,7 @@
     
   }
   
+  //
   SVG.extend(SVG.ViewBox, {
     // Parse viewbox to string
     toString: function() {
@@ -288,6 +289,8 @@
     }
     
   })
+  
+
 
   SVG.BBox = function(element) {
     var box
@@ -542,6 +545,10 @@
         return this.style(v)
       
       } else {
+        /* process gradient or pattern fill */
+        if (typeof v.fill === 'function')
+          v = v.fill()
+  
         /* treat x differently on text elements */
         if (a == 'x' && Array.isArray(this.lines))
           for (n = this.lines.length - 1; n >= 0; n--)
@@ -556,7 +563,7 @@
         /* ensure hex color */
         if (SVG.Color.test(v) || SVG.Color.isRgb(v))
           v = new SVG.Color(v).toHex()
-          
+  
         /* set give attribute on node */
         n != null ?
           this.node.setAttributeNS(n, a, v) :
@@ -833,13 +840,17 @@
       return this.children().indexOf(element) >= 0
     }
     // Iterates over all children and invokes a given block
-  , each: function(block) {
-      var index,
-          children = this.children()
-    
-      for (index = 0, length = children.length; index < length; index++)
-        if (children[index] instanceof SVG.Shape)
-          block.apply(children[index], [index, children])
+  , each: function(block, deep) {
+      var i, il
+        , children = this.children()
+      
+      for (i = 0, il = children.length; i < il; i++) {
+        if (children[i] instanceof SVG.Shape)
+          block.apply(children[i], [i, children])
+  
+        if (deep && (children[i] instanceof SVG.Container))
+          children[i].each(block, deep)
+      }
     
       return this
     }
@@ -861,67 +872,6 @@
   , level: function() {
       return this.removeElement(this.defs()).put(this.defs(), 0)
     }
-    // Create a group element
-  , group: function() {
-      return this.put(new SVG.G)
-    }
-    // Create a rect element
-  , rect: function(width, height) {
-      return this.put(new SVG.Rect().size(width, height))
-    }
-    // Create circle element, based on ellipse
-  , circle: function(size) {
-      return this.ellipse(size, size)
-    }
-    // Create an ellipse
-  , ellipse: function(width, height) {
-      return this.put(new SVG.Ellipse().size(width, height).move(0, 0))
-    }
-    // Create a line element
-  , line: function(x1, y1, x2, y2) {
-      return this.put(new SVG.Line().plot(x1, y1, x2, y2))
-    }
-    // Create a wrapped polyline element
-  , polyline: function(points, unbiased) {
-      return this.put(new SVG.Polyline(unbiased)).plot(points)
-    }
-    // Create a wrapped polygon element
-  , polygon: function(points, unbiased) {
-      return this.put(new SVG.Polygon(unbiased)).plot(points)
-    }
-    // Create a wrapped path element
-  , path: function(data, unbiased) {
-      return this.put(new SVG.Path(unbiased)).plot(data)
-    }
-    // Create image element, load image and set its size
-  , image: function(source, width, height) {
-      width = width != null ? width : 100
-      return this.put(new SVG.Image().load(source).size(width, height != null ? height : width))
-    }
-    // Create text element
-  , text: function(text) {
-      return this.put(new SVG.Text().text(text))
-    }
-    // Create nested svg document
-  , nested: function() {
-      return this.put(new SVG.Nested)
-    }
-    // Create gradient element in defs
-  , gradient: function(type, block) {
-      return this.defs().gradient(type, block)
-    }
-    // Create pattern element in defs
-  , pattern: function(width, height, block) {
-      return this.defs().pattern(width, height, block)
-    }
-    // Create masking element
-  , mask: function() {
-      return this.defs().put(new SVG.Mask)
-    }
-    // Create clipping element
-  , clip: function() {
-      return this.defs().put(new SVG.Clip)
-    }
     // Get first child, skipping the defs node
   , first: function() {
       return this.children()[0] instanceof SVG.Defs ? this.children()[1] : this.children()[0]
@@ -1374,6 +1324,7 @@
   // Inherit from SVG.Container
   SVG.G.prototype = new SVG.Container
   
+  //
   SVG.extend(SVG.G, {
     // Move over x-axis
     x: function(x) {
@@ -1389,6 +1340,15 @@
     }
     
   })
+  
+  //
+  SVG.extend(SVG.Container, {
+    // Create a group element
+    group: function() {
+      return this.put(new SVG.G)
+    }
+    
+  })
 
   SVG.extend(SVG.Element, {
     // Get all siblings, including myself
@@ -1452,6 +1412,7 @@
   // Inherit from SVG.Container
   SVG.Mask.prototype = new SVG.Container
   
+  //
   SVG.extend(SVG.Element, {
     // Distribute mask to svg element
     maskWith: function(element) {
@@ -1462,6 +1423,15 @@
     }
     
   })
+  
+  //
+  SVG.extend(SVG.Container, {
+    // Create masking element
+    mask: function() {
+      return this.defs().put(new SVG.Mask)
+    }
+    
+  })
 
   SVG.Clip = function() {
     this.constructor.call(this, SVG.create('clipPath'))
@@ -1470,6 +1440,7 @@
   // Inherit from SVG.Container
   SVG.Clip.prototype = new SVG.Container
   
+  //
   SVG.extend(SVG.Element, {
     // Distribute clipPath to svg element
     clipWith: function(element) {
@@ -1480,6 +1451,15 @@
     }
     
   })
+  
+  //
+  SVG.extend(SVG.Container, {
+    // Create clipping element
+    clip: function() {
+      return this.defs().put(new SVG.Clip)
+    }
+  
+  })
 
   SVG.Pattern = function(type) {
     this.constructor.call(this, SVG.create('pattern'))
@@ -1499,10 +1479,9 @@
   
   //
   SVG.extend(SVG.Defs, {
-    
-    /* define gradient */
+    // Define gradient
     pattern: function(width, height, block) {
-      var element = this.put(new SVG.Pattern())
+      var element = this.put(new SVG.Pattern)
       
       /* invoke passed block */
       block(element)
@@ -1516,7 +1495,16 @@
       })
     }
     
-  });
+  })
+  
+  //
+  SVG.extend(SVG.Container, {
+    // Create pattern element in defs
+    pattern: function(width, height, block) {
+      return this.defs().pattern(width, height, block)
+    }
+  
+  })
 
   SVG.Gradient = function(type) {
     this.constructor.call(this, SVG.create(type + 'Gradient'))
@@ -1584,6 +1572,15 @@
     
   })
   
+  //
+  SVG.extend(SVG.Container, {
+    // Create gradient element in defs
+    gradient: function(type, block) {
+      return this.defs().gradient(type, block)
+    }
+    
+  })
+  
   
   SVG.Stop = function(stop) {
     this.constructor.call(this, SVG.create('stop'))
@@ -1716,6 +1713,15 @@
   
   // Inherit from SVG.Shape
   SVG.Rect.prototype = new SVG.Shape
+  
+  //
+  SVG.extend(SVG.Container, {
+    // Create a rect element
+    rect: function(width, height) {
+      return this.put(new SVG.Rect().size(width, height))
+    }
+  
+  })
 
   SVG.Ellipse = function() {
     this.constructor.call(this, SVG.create('ellipse'))
@@ -1752,6 +1758,19 @@
     
   })
   
+  //
+  SVG.extend(SVG.Container, {
+    // Create circle element, based on ellipse
+    circle: function(size) {
+      return this.ellipse(size, size)
+    }
+    // Create an ellipse
+  , ellipse: function(width, height) {
+      return this.put(new SVG.Ellipse().size(width, height).move(0, 0))
+    }
+    
+  })
+  
   // Usage:
   
   //     draw.ellipse(200, 100)
@@ -1812,6 +1831,15 @@
     }
     
   })
+  
+  //
+  SVG.extend(SVG.Container, {
+    // Create a line element
+    line: function(x1, y1, x2, y2) {
+      return this.put(new SVG.Line().plot(x1, y1, x2, y2))
+    }
+    
+  })
 
 
   SVG.Polyline = function(unbiased) {
@@ -1848,8 +1876,19 @@
       return this.attr('points', p || '0,0')
     }
     
-  }) 
-
+  })
+  
+  //
+  SVG.extend(SVG.Container, {
+    // Create a wrapped polyline element
+    polyline: function(points, unbiased) {
+      return this.put(new SVG.Polyline(unbiased)).plot(points)
+    }
+    // Create a wrapped polygon element
+  , polygon: function(points, unbiased) {
+      return this.put(new SVG.Polygon(unbiased)).plot(points)
+    }
+  })
 
   SVG.Path = function(unbiased) {
     this.constructor.call(this, SVG.create('path'))
@@ -1867,6 +1906,15 @@
     }
     
   })
+  
+  //
+  SVG.extend(SVG.Container, {
+    // Create a wrapped path element
+    path: function(data, unbiased) {
+      return this.put(new SVG.Path(unbiased)).plot(data)
+    }
+  
+  })
 
   SVG.extend(SVG.Polyline, SVG.Polygon, SVG.Path, {
     // Move over x-axis
@@ -1917,6 +1965,7 @@
   // Inherit from SVG.Element
   SVG.Image.prototype = new SVG.Shape
   
+  //
   SVG.extend(SVG.Image, {
     
     // (re)load image
@@ -1925,6 +1974,16 @@
     }
     
   })
+  
+  //
+  SVG.extend(SVG.Container, {
+    // Create image element, load image and set its size
+    image: function(source, width, height) {
+      width = width != null ? width : 100
+      return this.put(new SVG.Image().load(source).size(width, height != null ? height : width))
+    }
+  
+  })
 
   var _styleAttr = ('size family weight stretch variant style').split(' ')
   
@@ -1945,6 +2004,7 @@
   // Inherit from SVG.Element
   SVG.Text.prototype = new SVG.Shape
   
+  //
   SVG.extend(SVG.Text, {
     // Move over x-axis
     x: function(x, a) {
@@ -2049,6 +2109,15 @@
     
   })
   
+  //
+  SVG.extend(SVG.Container, {
+    // Create text element
+    text: function(text) {
+      return this.put(new SVG.Text().text(text))
+    }
+  
+  })
+  
   // tspan class
   SVG.TSpan = function() {
     this.constructor.call(this, SVG.create('tspan'))
@@ -2076,6 +2145,15 @@
   
   // Inherit from SVG.Container
   SVG.Nested.prototype = new SVG.Container
+  
+  //
+  SVG.extend(SVG.Container, {
+    // Create nested svg document
+    nested: function() {
+      return this.put(new SVG.Nested)
+    }
+    
+  })
 
   SVG._stroke = ['color', 'width', 'opacity', 'linecap', 'linejoin', 'miterlimit', 'dasharray', 'dashoffset']
   SVG._fill   = ['color', 'opacity', 'rule']
diff --git a/dist/svg.min.js b/dist/svg.min.js
index 4a284a2..1666cca 100644
--- a/dist/svg.min.js
+++ b/dist/svg.min.js
@@ -1 +1 @@
-(function(){if(this.SVG=function(t){return SVG.supported?new SVG.Doc(t):void 0},this.svg=function(t){return console.warn("WARNING: svg() is deprecated, please use SVG() instead."),SVG(t)},SVG.ns="http://www.w3.org/2000/svg",SVG.xlink="http://www.w3.org/1999/xlink",SVG.did=1e3,SVG.eid=function(t){return"Svgjs"+t.charAt(0).toUpperCase()+t.slice(1)+SVG.did++},SVG.create=function(t){var e=document.createElementNS(this.ns,t);return e.setAttribute("id",this.eid(t)),e},SVG.extend=function(){var t,e,i,n;for(t=[].slice.call(arguments),e=t.pop(),n=t.length-1;n>=0;n--)if(t[n])for(i in e)t[n].prototype[i]=e[i]},SVG.get=function(t){var e=document.getElementById(t);return e?e.instance:void 0},SVG.supported=function(){return!!document.createElementNS&&!!document.createElementNS(SVG.ns,"svg").createSVGRect}(),!SVG.supported)return!1;SVG.regex={test:function(t,e){return this[e].test(t)},unit:/^([\d\.]+)([a-z%]{0,2})$/,hex:/^#?([a-f\d]{2})([a-f\d]{2})([a-f\d]{2})$/i,rgb:/rgb\((\d+),(\d+),(\d+)\)/,isHex:/^#[a-f0-9]{3,6}$/i,isRgb:/^rgb\(/,isCss:/[^:]+:[^;]+;?/,isStyle:/^font|text|leading|cursor/,isBlank:/^(\s+)?$/,isNumber:/^-?[\d\.]+$/},SVG.defaults={matrix:"1,0,0,1,0,0",attrs:{"fill-opacity":1,"stroke-opacity":1,"stroke-width":0,fill:"#000",stroke:"#000",opacity:1,x:0,y:0,cx:0,cy:0,width:0,height:0,r:0,rx:0,ry:0,offset:0},trans:function(){return{x:0,y:0,scaleX:1,scaleY:1,rotation:0,skewX:0,skewY:0,matrix:this.matrix,a:1,b:0,c:0,d:1,e:0,f:0}}},SVG.Color=function(t){var e;this.r=0,this.g=0,this.b=0,"string"==typeof t?SVG.regex.isRgb.test(t)?(e=SVG.regex.rgb.exec(t.replace(/\s/g,"")),this.r=parseInt(e[1]),this.g=parseInt(e[2]),this.b=parseInt(e[3])):SVG.regex.isHex.test(t)&&(e=SVG.regex.hex.exec(this._fullHex(t)),this.r=parseInt(e[1],16),this.g=parseInt(e[2],16),this.b=parseInt(e[3],16)):"object"==typeof t&&(this.r=t.r,this.g=t.g,this.b=t.b)},SVG.extend(SVG.Color,{toString:function(){return this.toHex()},toHex:function(){return"#"+this._compToHex(this.r)+this._compToHex(this.g)+this._compToHex(this.b)},toRgb:function(){return"rgb("+[this.r,this.g,this.b].join()+")"},brightness:function(){return.3*(this.r/255)+.59*(this.g/255)+.11*(this.b/255)},_fullHex:function(t){return 4==t.length?["#",t.substring(1,2),t.substring(1,2),t.substring(2,3),t.substring(2,3),t.substring(3,4),t.substring(3,4)].join(""):t},_compToHex:function(t){var e=t.toString(16);return 1==e.length?"0"+e:e}}),SVG.Color.test=function(t){return t+="",SVG.regex.isHex.test(t)||SVG.regex.isRgb.test(t)},SVG.Color.isRgb=function(t){return t&&"number"==typeof t.r},SVG.ViewBox=function(t){var e,i,n,s,r=t.bbox(),o=(t.attr("viewBox")||"").match(/-?[\d\.]+/g);this.x=r.x,this.y=r.y,this.width=t.node.offsetWidth||t.attr("width"),this.height=t.node.offsetHeight||t.attr("height"),o&&(e=parseFloat(o[0]),i=parseFloat(o[1]),n=parseFloat(o[2]),s=parseFloat(o[3]),this.zoom=this.width/this.height>n/s?this.height/s:this.width/n,this.x=e,this.y=i,this.width=n,this.height=s),this.zoom=this.zoom||1},SVG.extend(SVG.ViewBox,{toString:function(){return this.x+" "+this.y+" "+this.width+" "+this.height}}),SVG.BBox=function(t){var e;if(this.x=0,this.y=0,this.width=0,this.height=0,t){try{e=t.node.getBBox()}catch(i){e={x:t.node.clientLeft,y:t.node.clientTop,width:t.node.clientWidth,height:t.node.clientHeight}}this.x=e.x+t.trans.x,this.y=e.y+t.trans.y,this.width=e.width*t.trans.scaleX,this.height=e.height*t.trans.scaleY}this.cx=this.x+this.width/2,this.cy=this.y+this.height/2},SVG.extend(SVG.BBox,{merge:function(t){var e=new SVG.BBox;return e.x=Math.min(this.x,t.x),e.y=Math.min(this.y,t.y),e.width=Math.max(this.x+this.width,t.x+t.width)-e.x,e.height=Math.max(this.y+this.height,t.y+t.height)-e.y,e.cx=e.x+e.width/2,e.cy=e.y+e.height/2,e}}),SVG.RBox=function(t){var e,i,n={};if(this.x=0,this.y=0,this.width=0,this.height=0,t){for(e=t.doc().parent,i=t.doc().viewbox().zoom,n=t.node.getBoundingClientRect(),this.x=n.left,this.y=n.top,this.x-=e.offsetLeft,this.y-=e.offsetTop;e=e.offsetParent;)this.x-=e.offsetLeft,this.y-=e.offsetTop;for(e=t;e=e.parent;)"svg"==e.type&&e.viewbox&&(i*=e.viewbox().zoom,this.x-=e.x()||0,this.y-=e.y()||0)}this.x/=i,this.y/=i,this.width=n.width/=i,this.height=n.height/=i,this.cx=this.x+this.width/2,this.cy=this.y+this.height/2},SVG.Element=function(t){this._stroke=SVG.defaults.attrs.stroke,this.styles={},this.trans=SVG.defaults.trans(),(this.node=t)&&(this.type=t.nodeName,this.node.instance=this)},SVG.extend(SVG.Element,{x:function(t){return t&&(t/=this.trans.scaleX),this.attr("x",t)},y:function(t){return t&&(t/=this.trans.scaleY),this.attr("y",t)},cx:function(t){return null==t?this.bbox().cx:this.x(t-this.bbox().width/2)},cy:function(t){return null==t?this.bbox().cy:this.y(t-this.bbox().height/2)},move:function(t,e){return this.x(t).y(e)},center:function(t,e){return this.cx(t).cy(e)},size:function(t,e){return this.attr({width:t,height:e})},clone:function(){var t,e,i=this.type;return t="rect"==i||"ellipse"==i?this.parent[i](0,0):"line"==i?this.parent[i](0,0,0,0):"image"==i?this.parent[i](this.src):"text"==i?this.parent[i](this.content):"path"==i?this.parent[i](this.attr("d")):"polyline"==i||"polygon"==i?this.parent[i](this.attr("points")):"g"==i?this.parent.group():this.parent[i](),e=this.attr(),delete e.id,t.attr(e),t.trans=this.trans,t.transform({})},remove:function(){return this.parent&&this.parent.removeElement(this),this},doc:function(t){return this._parent(t||SVG.Doc)},attr:function(t,e,i){if(null==t){for(t={},e=this.node.attributes,i=e.length-1;i>=0;i--)t[e[i].nodeName]=SVG.regex.test(e[i].nodeValue,"isNumber")?parseFloat(e[i].nodeValue):e[i].nodeValue;return t}if("object"==typeof t)for(e in t)this.attr(e,t[e]);else if(null===e)this.node.removeAttribute(t);else{if(null==e)return this._isStyle(t)?"text"==t?this.content:"leading"==t&&this.leading?this.leading():this.style(t):(e=this.node.getAttribute(t),null==e?SVG.defaults.attrs[t]:SVG.regex.test(e,"isNumber")?parseFloat(e):e);if("style"==t)return this.style(e);if("x"==t&&Array.isArray(this.lines))for(i=this.lines.length-1;i>=0;i--)this.lines[i].attr(t,e);"stroke-width"==t?this.attr("stroke",parseFloat(e)>0?this._stroke:null):"stroke"==t&&(this._stroke=e),(SVG.Color.test(e)||SVG.Color.isRgb(e))&&(e=new 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SVG.FX(this))).stop().animate(t,e,i)},stop:function(){return this.fx&&this.fx.stop(),this}}),["click","dblclick","mousedown","mouseup","mouseover","mouseout","mousemove","mouseenter","mouseleave","touchstart","touchend","touchmove","touchcancel"].forEach(function(t){SVG.Element.prototype[t]=function(e){var i=this;return this.node["on"+t]="function"==typeof e?function(){return e.apply(i,arguments)}:null,this}}),SVG.on=function(t,e,i){t.addEventListener?t.addEventListener(e,i,!1):t.attachEvent("on"+e,i)},SVG.off=function(t,e,i){t.removeEventListener?t.removeEventListener(e,i,!1):t.detachEvent("on"+e,i)},SVG.extend(SVG.Element,{on:function(t,e){return SVG.on(this.node,t,e),this},off:function(t,e){return SVG.off(this.node,t,e),this}}),SVG.G=function(){this.constructor.call(this,SVG.create("g"))},SVG.G.prototype=new SVG.Container,SVG.extend(SVG.G,{x:function(t){return null==t?this.trans.x:this.transform("x",t)},y:function(t){return null==t?this.trans.y:this.transform("y",t)},defs:function(){return this.doc().defs()}}),SVG.extend(SVG.Container,{group:function(){return this.put(new SVG.G)}}),SVG.extend(SVG.Element,{siblings:function(){return this.parent.children()},position:function(){return this.siblings().indexOf(this)},next:function(){return this.siblings()[this.position()+1]},previous:function(){return this.siblings()[this.position()-1]},forward:function(){return this.parent.removeElement(this).put(this,this.position()+1)},backward:function(){this.parent.level();var t=this.position();return t>1&&this.parent.removeElement(this).add(this,t-1),this},front:function(){return this.parent.removeElement(this).put(this)},back:function(){return this.parent.level(),this.position()>1&&this.parent.removeElement(this).add(this,0),this}}),SVG.Defs=function(){this.constructor.call(this,SVG.create("defs"))},SVG.Defs.prototype=new SVG.Container,SVG.Mask=function(){this.constructor.call(this,SVG.create("mask"))},SVG.Mask.prototype=new SVG.Container,SVG.extend(SVG.Element,{maskWith:function(t){return this.mask=t instanceof SVG.Mask?t:this.parent.mask().add(t),this.attr("mask","url(#"+this.mask.attr("id")+")")}}),SVG.extend(SVG.Container,{mask:function(){return this.defs().put(new SVG.Mask)}}),SVG.Clip=function(){this.constructor.call(this,SVG.create("clipPath"))},SVG.Clip.prototype=new SVG.Container,SVG.extend(SVG.Element,{clipWith:function(t){return this.clip=t instanceof SVG.Clip?t:this.parent.clip().add(t),this.attr("clip-path","url(#"+this.clip.attr("id")+")")}}),SVG.extend(SVG.Container,{clip:function(){return this.defs().put(new SVG.Clip)}}),SVG.Pattern=function(){this.constructor.call(this,SVG.create("pattern"))},SVG.Pattern.prototype=new SVG.Container,SVG.extend(SVG.Pattern,{fill:function(){return"url(#"+this.attr("id")+")"}}),SVG.extend(SVG.Defs,{pattern:function(t,e,i){var n=this.put(new SVG.Pattern);return i(n),n.attr({x:0,y:0,width:t,height:e,patternUnits:"userSpaceOnUse"})}}),SVG.extend(SVG.Container,{pattern:function(t,e,i){return this.defs().pattern(t,e,i)}}),SVG.Gradient=function(t){this.constructor.call(this,SVG.create(t+"Gradient")),this.type=t},SVG.Gradient.prototype=new SVG.Container,SVG.extend(SVG.Gradient,{from:function(t,e){return"radial"==this.type?this.attr({fx:t+"%",fy:e+"%"}):this.attr({x1:t+"%",y1:e+"%"})},to:function(t,e){return"radial"==this.type?this.attr({cx:t+"%",cy:e+"%"}):this.attr({x2:t+"%",y2:e+"%"})},radius:function(t){return"radial"==this.type?this.attr({r:t+"%"}):this},at:function(t){return this.put(new SVG.Stop(t))},update:function(t){for(;this.node.hasChildNodes();)this.node.removeChild(this.node.lastChild);return t(this),this},fill:function(){return"url(#"+this.attr("id")+")"}}),SVG.extend(SVG.Defs,{gradient:function(t,e){var i=this.put(new SVG.Gradient(t));return e(i),i}}),SVG.extend(SVG.Container,{gradient:function(t,e){return this.defs().gradient(t,e)}}),SVG.Stop=function(t){this.constructor.call(this,SVG.create("stop")),this.update(t)},SVG.Stop.prototype=new SVG.Element,SVG.extend(SVG.Stop,{update:function(t){var e,i=["opacity","color"];for(e=i.length-1;e>=0;e--)null!=t[i[e]]&&this.style("stop-"+i[e],t[i[e]]);return this.attr("offset",(null!=t.offset?t.offset:this.attr("offset"))+"%")}}),SVG.Doc=function(t){this.parent="string"==typeof t?document.getElementById(t):t,this.constructor.call(this,"svg"==this.parent.nodeName?this.parent:SVG.create("svg")),this.attr({xmlns:SVG.ns,version:"1.1",width:"100%",height:"100%"}).attr("xlink",SVG.xlink,SVG.ns).defs(),"svg"!=this.parent.nodeName&&this.stage()},SVG.Doc.prototype=new SVG.Container,SVG.extend(SVG.Doc,{stage:function(){var t,e=this,i=document.createElement("div");return i.style.cssText="position:relative;height:100%;",e.parent.appendChild(i),i.appendChild(e.node),t=function(){"complete"===document.readyState?(e.style("position:absolute;"),setTimeout(function(){e.style("position:relative;"),e.parent.removeChild(e.node.parentNode),e.node.parentNode.removeChild(e.node),e.parent.appendChild(e.node),e.fixSubPixelOffset(),SVG.on(window,"resize",function(){e.fixSubPixelOffset()})},5)):setTimeout(t,10)},t(),this},fixSubPixelOffset:function(){var t=this.node.getScreenCTM();this.style("left",-t.e%1+"px").style("top",-t.f%1+"px")}}),SVG.Shape=function(t){this.constructor.call(this,t)},SVG.Shape.prototype=new SVG.Element,SVG.Rect=function(){this.constructor.call(this,SVG.create("rect"))},SVG.Rect.prototype=new SVG.Shape,SVG.extend(SVG.Container,{rect:function(t,e){return this.put((new SVG.Rect).size(t,e))}}),SVG.Ellipse=function(){this.constructor.call(this,SVG.create("ellipse"))},SVG.Ellipse.prototype=new SVG.Shape,SVG.extend(SVG.Ellipse,{x:function(t){return null==t?this.cx()-this.attr("rx"):this.cx(t+this.attr("rx"))},y:function(t){return null==t?this.cy()-this.attr("ry"):this.cy(t+this.attr("ry"))},cx:function(t){return null==t?this.attr("cx"):this.attr("cx",t/this.trans.scaleX)},cy:function(t){return null==t?this.attr("cy"):this.attr("cy",t/this.trans.scaleY)},size:function(t,e){return this.attr({rx:t/2,ry:e/2})}}),SVG.extend(SVG.Container,{circle:function(t){return this.ellipse(t,t)},ellipse:function(t,e){return this.put((new SVG.Ellipse).size(t,e).move(0,0))}}),SVG.Line=function(){this.constructor.call(this,SVG.create("line"))},SVG.Line.prototype=new SVG.Shape,SVG.extend(SVG.Line,{x:function(t){var e=this.bbox();return null==t?e.x:this.attr({x1:this.attr("x1")-e.x+t,x2:this.attr("x2")-e.x+t})},y:function(t){var e=this.bbox();return null==t?e.y:this.attr({y1:this.attr("y1")-e.y+t,y2:this.attr("y2")-e.y+t})},cx:function(t){var e=this.bbox().width/2;return null==t?this.x()+e:this.x(t-e)},cy:function(t){var e=this.bbox().height/2;return null==t?this.y()+e:this.y(t-e)},size:function(t,e){var i=this.bbox();return this.attr(this.attr("x1")<this.attr("x2")?"x2":"x1",i.x+t).attr(this.attr("y1")<this.attr("y2")?"y2":"y1",i.y+e)},plot:function(t,e,i,n){return this.attr({x1:t,y1:e,x2:i,y2:n})}}),SVG.extend(SVG.Container,{line:function(t,e,i,n){return this.put((new SVG.Line).plot(t,e,i,n))}}),SVG.Polyline=function(t){this.constructor.call(this,SVG.create("polyline")),this.unbiased=t},SVG.Polyline.prototype=new SVG.Shape,SVG.Polygon=function(t){this.constructor.call(this,SVG.create("polygon")),this.unbiased=t},SVG.Polygon.prototype=new SVG.Shape,SVG.extend(SVG.Polyline,SVG.Polygon,{_plot:function(t){if(Array.isArray(t)){var e,i,n=[];for(e=0,i=t.length;i>e;e++)n.push(t[e].join(","));t=n.length>0?n.join(" "):"0,0"}return this.attr("points",t||"0,0")}}),SVG.extend(SVG.Container,{polyline:function(t,e){return this.put(new SVG.Polyline(e)).plot(t)},polygon:function(t,e){return this.put(new SVG.Polygon(e)).plot(t)}}),SVG.Path=function(t){this.constructor.call(this,SVG.create("path")),this.unbiased=t},SVG.Path.prototype=new SVG.Shape,SVG.extend(SVG.Path,{_plot:function(t){return this.attr("d",t||"M0,0")}}),SVG.extend(SVG.Container,{path:function(t,e){return this.put(new SVG.Path(e)).plot(t)}}),SVG.extend(SVG.Polyline,SVG.Polygon,SVG.Path,{x:function(t){return null==t?this.bbox().x:this.transform("x",t)},y:function(t){return null==t?this.bbox().y:this.transform("y",t)},size:function(t,e){var i=t/this._offset.width;return this.transform({scaleX:i,scaleY:null!=e?e/this._offset.height:i})},plot:function(t){var e=this.trans.scaleX,i=this.trans.scaleY;return this._plot(t),this._offset=this.transform({scaleX:1,scaleY:1}).bbox(),this.unbiased?this._offset.x=this._offset.y=0:(this._offset.x-=this.trans.x,this._offset.y-=this.trans.y),this.transform({scaleX:e,scaleY:i})}}),SVG.Image=function(){this.constructor.call(this,SVG.create("image"))},SVG.Image.prototype=new SVG.Shape,SVG.extend(SVG.Image,{load:function(t){return t?this.attr("xlink:href",this.src=t,SVG.xlink):this}}),SVG.extend(SVG.Container,{image:function(t,e,i){return e=null!=e?e:100,this.put((new SVG.Image).load(t).size(e,null!=i?i:e))}});var t="size family weight stretch variant style".split(" ");SVG.Text=function(){this.constructor.call(this,SVG.create("text")),this.styles={"font-size":16,"font-family":"Helvetica, Arial, sans-serif","text-anchor":"start"},this._leading=1.2,this._base=.276666666},SVG.Text.prototype=new SVG.Shape,SVG.extend(SVG.Text,{x:function(t,e){return null==t?e?this.attr("x"):this.bbox().x:(e||(e=this.style("text-anchor"),t="start"==e?t:"end"==e?t+this.bbox().width:t+this.bbox().width/2),this.attr("x",t))},cx:function(t){return null==t?this.bbox().cx:this.x(t-this.bbox().width/2)},cy:function(t,e){return null==t?this.bbox().cy:this.y(e?t:t-this.bbox().height/2)},move:function(t,e,i){return this.x(t,i).y(e)},center:function(t,e,i){return this.cx(t,i).cy(e,i)},text:function(t){if(null==t)return this.content;this.clear(),this.content=SVG.regex.isBlank.test(t)?"text":t;var e,i,n=t.split("\n");for(e=0,i=n.length;i>e;e++)this.tspan(n[e]);return this.attr("textLength",1).attr("textLength",null)},tspan:function(t){var e=(new SVG.TSpan).text(t);return this.node.appendChild(e.node),this.lines.push(e),e.attr("style",this.style())},size:function(t){return this.attr("font-size",t)},leading:function(t){return null==t?this._leading:(this._leading=t,this.rebuild("leading",t))},rebuild:function(){var t,e,i=this.styles["font-size"];for(t=0,e=this.lines.length;e>t;t++)this.lines[t].attr({dy:i*this._leading-(0==t?i*this._base:0),x:this.attr("x")||0,style:this.style()});return this},clear:function(){for(;this.node.hasChildNodes();)this.node.removeChild(this.node.lastChild);return this.lines=[],this}}),SVG.extend(SVG.Container,{text:function(t){return this.put((new SVG.Text).text(t))}}),SVG.TSpan=function(){this.constructor.call(this,SVG.create("tspan"))},SVG.TSpan.prototype=new SVG.Shape,SVG.extend(SVG.TSpan,{text:function(t){return this.node.appendChild(document.createTextNode(t)),this}}),SVG.Nested=function(){this.constructor.call(this,SVG.create("svg")),this.style("overflow","visible")},SVG.Nested.prototype=new SVG.Container,SVG.extend(SVG.Container,{nested:function(){return this.put(new SVG.Nested)}}),SVG._stroke=["color","width","opacity","linecap","linejoin","miterlimit","dasharray","dashoffset"],SVG._fill=["color","opacity","rule"];var e=function(t,e){return"color"==e?t:t+"-"+e};["fill","stroke"].forEach(function(t){var i={};i[t]=function(i){if("string"==typeof i||SVG.Color.isRgb(i))this.attr(t,i);else for(index=SVG["_"+t].length-1;index>=0;index--)null!=i[SVG["_"+t][index]]&&this.attr(e(t,SVG["_"+t][index]),i[SVG["_"+t][index]]);return this},SVG.extend(SVG.Shape,SVG.FX,i)}),SVG.extend(SVG.Element,SVG.FX,{rotate:function(t,e,i){return this.transform({rotation:t||0,cx:e,cy:i})},skew:function(t,e){return this.transform({skewX:t||0,skewY:e||0})},scale:function(t,e){return this.transform({scaleX:t,scaleY:null==e?t:e})},translate:function(t,e){return this.transform({x:t,y:e})},matrix:function(t){return this.transform({matrix:t})},opacity:function(t){return this.attr("opacity",t)}}),SVG.Text&&SVG.extend(SVG.Text,SVG.FX,{font:function(e){for(var i in e)"anchor"==i?this.attr("text-anchor",e[i]):t.indexOf(i)>-1?this.attr("font-"+i,e[i]):this.attr(i,e[i]);return this}})}).call(this);
\ No newline at end of file
diff --git a/spec/spec/color.js b/spec/spec/color.js
index 0b510c3..1980600 100644
--- a/spec/spec/color.js
+++ b/spec/spec/color.js
@@ -7,14 +7,14 @@ describe('Color', function() {
 		expect(color.b).toBe(128)
 	})
 	
-	it('should correclty parse a 3-based hex string', function() {
+	it('should correclty parse a 3 digit hex string', function() {
 		var color = new SVG.Color('#f06')
 		expect(color.r).toBe(255)
 		expect(color.g).toBe(0)
 		expect(color.b).toBe(102)
 	})
 
-	it('should correclty parse a 6-based hex string', function() {
+	it('should correclty parse a 6 digit hex string', function() {
 		var color = new SVG.Color('#0066ff')
 		expect(color.r).toBe(0)
 		expect(color.g).toBe(102)
diff --git a/spec/spec/container.js b/spec/spec/container.js
index 24feb00..217e2e2 100644
--- a/spec/spec/container.js
+++ b/spec/spec/container.js
@@ -225,6 +225,23 @@ describe('Container', function() {
       
       expect(children).toEqual(group.children())
     })
+    it('should traverse recursively when set to deep', function() {
+      var children = []
+        , group = draw.group()
+      
+      draw.rect(100,200)
+      draw.circle(300)
+      
+      group.rect(100,100)
+      group.ellipse(100, 100)
+      group.polygon()
+      
+      draw.each(function() {
+        children.push(this)
+      }, true)
+      
+      expect(children.length).toEqual(draw.children().length + group.children().length)
+    })
   })
   
   describe('viewbox()', function() {
diff --git a/spec/spec/gradient.js b/spec/spec/gradient.js
index db16e92..f07a7e8 100644
--- a/spec/spec/gradient.js
+++ b/spec/spec/gradient.js
@@ -13,6 +13,10 @@ describe('Gradient', function() {
     it('should return the id of the gradient wrapped in url()', function() {
       expect(gradient.fill()).toBe('url(#' + gradient.attr('id') + ')')
     })
+    it('should be called when instance is passed as an attribute value', function() {
+      rect.attr('fill', gradient)
+      expect(rect.attr('fill')).toBe('url(#' + gradient.attr('id') + ')')
+    })
   })
   
 })
\ No newline at end of file
diff --git a/src/clip.js b/src/clip.js
index c1e82cb..7341c8f 100644
--- a/src/clip.js
+++ b/src/clip.js
@@ -5,6 +5,7 @@ SVG.Clip = function() {
 // Inherit from SVG.Container
 SVG.Clip.prototype = new SVG.Container
 
+//
 SVG.extend(SVG.Element, {
   // Distribute clipPath to svg element
   clipWith: function(element) {
@@ -14,4 +15,13 @@ SVG.extend(SVG.Element, {
     return this.attr('clip-path', 'url(#' + this.clip.attr('id') + ')')
   }
   
+})
+
+//
+SVG.extend(SVG.Container, {
+  // Create clipping element
+  clip: function() {
+    return this.defs().put(new SVG.Clip)
+  }
+
 })
\ No newline at end of file
diff --git a/src/container.js b/src/container.js
index 46ebdb1..dbf2205 100644
--- a/src/container.js
+++ b/src/container.js
@@ -41,13 +41,17 @@ SVG.extend(SVG.Container, {
     return this.children().indexOf(element) >= 0
   }
   // Iterates over all children and invokes a given block
-, each: function(block) {
-    var index,
-        children = this.children()
-  
-    for (index = 0, length = children.length; index < length; index++)
-      if (children[index] instanceof SVG.Shape)
-        block.apply(children[index], [index, children])
+, each: function(block, deep) {
+    var i, il
+      , children = this.children()
+    
+    for (i = 0, il = children.length; i < il; i++) {
+      if (children[i] instanceof SVG.Shape)
+        block.apply(children[i], [i, children])
+
+      if (deep && (children[i] instanceof SVG.Container))
+        children[i].each(block, deep)
+    }
   
     return this
   }
@@ -69,67 +73,6 @@ SVG.extend(SVG.Container, {
 , level: function() {
     return this.removeElement(this.defs()).put(this.defs(), 0)
   }
-  // Create a group element
-, group: function() {
-    return this.put(new SVG.G)
-  }
-  // Create a rect element
-, rect: function(width, height) {
-    return this.put(new SVG.Rect().size(width, height))
-  }
-  // Create circle element, based on ellipse
-, circle: function(size) {
-    return this.ellipse(size, size)
-  }
-  // Create an ellipse
-, ellipse: function(width, height) {
-    return this.put(new SVG.Ellipse().size(width, height).move(0, 0))
-  }
-  // Create a line element
-, line: function(x1, y1, x2, y2) {
-    return this.put(new SVG.Line().plot(x1, y1, x2, y2))
-  }
-  // Create a wrapped polyline element
-, polyline: function(points, unbiased) {
-    return this.put(new SVG.Polyline(unbiased)).plot(points)
-  }
-  // Create a wrapped polygon element
-, polygon: function(points, unbiased) {
-    return this.put(new SVG.Polygon(unbiased)).plot(points)
-  }
-  // Create a wrapped path element
-, path: function(data, unbiased) {
-    return this.put(new SVG.Path(unbiased)).plot(data)
-  }
-  // Create image element, load image and set its size
-, image: function(source, width, height) {
-    width = width != null ? width : 100
-    return this.put(new SVG.Image().load(source).size(width, height != null ? height : width))
-  }
-  // Create text element
-, text: function(text) {
-    return this.put(new SVG.Text().text(text))
-  }
-  // Create nested svg document
-, nested: function() {
-    return this.put(new SVG.Nested)
-  }
-  // Create gradient element in defs
-, gradient: function(type, block) {
-    return this.defs().gradient(type, block)
-  }
-  // Create pattern element in defs
-, pattern: function(width, height, block) {
-    return this.defs().pattern(width, height, block)
-  }
-  // Create masking element
-, mask: function() {
-    return this.defs().put(new SVG.Mask)
-  }
-  // Create clipping element
-, clip: function() {
-    return this.defs().put(new SVG.Clip)
-  }
   // Get first child, skipping the defs node
 , first: function() {
     return this.children()[0] instanceof SVG.Defs ? this.children()[1] : this.children()[0]
diff --git a/src/element.js b/src/element.js
index 8d07762..3fa456f 100644
--- a/src/element.js
+++ b/src/element.js
@@ -140,6 +140,10 @@ SVG.extend(SVG.Element, {
       return this.style(v)
     
     } else {
+      /* process gradient or pattern fill */
+      if (typeof v.fill === 'function')
+        v = v.fill()
+
       /* treat x differently on text elements */
       if (a == 'x' && Array.isArray(this.lines))
         for (n = this.lines.length - 1; n >= 0; n--)
@@ -154,7 +158,7 @@ SVG.extend(SVG.Element, {
       /* ensure hex color */
       if (SVG.Color.test(v) || SVG.Color.isRgb(v))
         v = new SVG.Color(v).toHex()
-        
+
       /* set give attribute on node */
       n != null ?
         this.node.setAttributeNS(n, a, v) :
diff --git a/src/ellipse.js b/src/ellipse.js
index 598c250..2ff0c86 100644
--- a/src/ellipse.js
+++ b/src/ellipse.js
@@ -34,6 +34,19 @@ SVG.extend(SVG.Ellipse, {
   
 })
 
+//
+SVG.extend(SVG.Container, {
+  // Create circle element, based on ellipse
+  circle: function(size) {
+    return this.ellipse(size, size)
+  }
+  // Create an ellipse
+, ellipse: function(width, height) {
+    return this.put(new SVG.Ellipse().size(width, height).move(0, 0))
+  }
+  
+})
+
 // Usage:
 
 //     draw.ellipse(200, 100)
\ No newline at end of file
diff --git a/src/gradient.js b/src/gradient.js
index 6a2155e..f98a0b0 100644
--- a/src/gradient.js
+++ b/src/gradient.js
@@ -64,6 +64,15 @@ SVG.extend(SVG.Defs, {
   
 })
 
+//
+SVG.extend(SVG.Container, {
+  // Create gradient element in defs
+  gradient: function(type, block) {
+    return this.defs().gradient(type, block)
+  }
+  
+})
+
 
 SVG.Stop = function(stop) {
   this.constructor.call(this, SVG.create('stop'))
diff --git a/src/group.js b/src/group.js
index f960391..1184657 100644
--- a/src/group.js
+++ b/src/group.js
@@ -5,6 +5,7 @@ SVG.G = function() {
 // Inherit from SVG.Container
 SVG.G.prototype = new SVG.Container
 
+//
 SVG.extend(SVG.G, {
   // Move over x-axis
   x: function(x) {
@@ -19,4 +20,13 @@ SVG.extend(SVG.G, {
     return this.doc().defs()
   }
   
+})
+
+//
+SVG.extend(SVG.Container, {
+  // Create a group element
+  group: function() {
+    return this.put(new SVG.G)
+  }
+  
 })
\ No newline at end of file
diff --git a/src/image.js b/src/image.js
index 7546936..b01897d 100644
--- a/src/image.js
+++ b/src/image.js
@@ -5,6 +5,7 @@ SVG.Image = function() {
 // Inherit from SVG.Element
 SVG.Image.prototype = new SVG.Shape
 
+//
 SVG.extend(SVG.Image, {
   
   // (re)load image
@@ -12,4 +13,14 @@ SVG.extend(SVG.Image, {
     return (url ? this.attr('xlink:href', (this.src = url), SVG.xlink) : this)
   }
   
+})
+
+//
+SVG.extend(SVG.Container, {
+  // Create image element, load image and set its size
+  image: function(source, width, height) {
+    width = width != null ? width : 100
+    return this.put(new SVG.Image().load(source).size(width, height != null ? height : width))
+  }
+
 })
\ No newline at end of file
diff --git a/src/line.js b/src/line.js
index b32141c..2c9034e 100644
--- a/src/line.js
+++ b/src/line.js
@@ -54,3 +54,12 @@ SVG.extend(SVG.Line, {
   }
   
 })
+
+//
+SVG.extend(SVG.Container, {
+  // Create a line element
+  line: function(x1, y1, x2, y2) {
+    return this.put(new SVG.Line().plot(x1, y1, x2, y2))
+  }
+  
+})
diff --git a/src/mask.js b/src/mask.js
index 12fc13b..ddd7565 100644
--- a/src/mask.js
+++ b/src/mask.js
@@ -5,6 +5,7 @@ SVG.Mask = function() {
 // Inherit from SVG.Container
 SVG.Mask.prototype = new SVG.Container
 
+//
 SVG.extend(SVG.Element, {
   // Distribute mask to svg element
   maskWith: function(element) {
@@ -14,4 +15,13 @@ SVG.extend(SVG.Element, {
     return this.attr('mask', 'url(#' + this.mask.attr('id') + ')')
   }
   
+})
+
+//
+SVG.extend(SVG.Container, {
+  // Create masking element
+  mask: function() {
+    return this.defs().put(new SVG.Mask)
+  }
+  
 })
\ No newline at end of file
diff --git a/src/nested.js b/src/nested.js
index 537d610..d42abf9 100644
--- a/src/nested.js
+++ b/src/nested.js
@@ -5,4 +5,13 @@ SVG.Nested = function() {
 }
 
 // Inherit from SVG.Container
-SVG.Nested.prototype = new SVG.Container
\ No newline at end of file
+SVG.Nested.prototype = new SVG.Container
+
+//
+SVG.extend(SVG.Container, {
+  // Create nested svg document
+  nested: function() {
+    return this.put(new SVG.Nested)
+  }
+  
+})
\ No newline at end of file
diff --git a/src/path.js b/src/path.js
index b328d92..ef6ab03 100644
--- a/src/path.js
+++ b/src/path.js
@@ -13,4 +13,13 @@ SVG.extend(SVG.Path, {
     return this.attr('d', data || 'M0,0')
   }
   
+})
+
+//
+SVG.extend(SVG.Container, {
+  // Create a wrapped path element
+  path: function(data, unbiased) {
+    return this.put(new SVG.Path(unbiased)).plot(data)
+  }
+
 })
\ No newline at end of file
diff --git a/src/pattern.js b/src/pattern.js
index c5f51e0..dc57e77 100644
--- a/src/pattern.js
+++ b/src/pattern.js
@@ -16,10 +16,9 @@ SVG.extend(SVG.Pattern, {
 
 //
 SVG.extend(SVG.Defs, {
-  
-  /* define gradient */
+  // Define gradient
   pattern: function(width, height, block) {
-    var element = this.put(new SVG.Pattern())
+    var element = this.put(new SVG.Pattern)
     
     /* invoke passed block */
     block(element)
@@ -33,4 +32,13 @@ SVG.extend(SVG.Defs, {
     })
   }
   
-});
\ No newline at end of file
+})
+
+//
+SVG.extend(SVG.Container, {
+  // Create pattern element in defs
+  pattern: function(width, height, block) {
+    return this.defs().pattern(width, height, block)
+  }
+
+})
\ No newline at end of file
diff --git a/src/poly.js b/src/poly.js
index 36492dc..8dd4696 100644
--- a/src/poly.js
+++ b/src/poly.js
@@ -32,4 +32,16 @@ SVG.extend(SVG.Polyline, SVG.Polygon, {
     return this.attr('points', p || '0,0')
   }
   
-}) 
+})
+
+//
+SVG.extend(SVG.Container, {
+  // Create a wrapped polyline element
+  polyline: function(points, unbiased) {
+    return this.put(new SVG.Polyline(unbiased)).plot(points)
+  }
+  // Create a wrapped polygon element
+, polygon: function(points, unbiased) {
+    return this.put(new SVG.Polygon(unbiased)).plot(points)
+  }
+})
\ No newline at end of file
diff --git a/src/rect.js b/src/rect.js
index 1a3bf19..583556d 100644
--- a/src/rect.js
+++ b/src/rect.js
@@ -3,4 +3,13 @@ SVG.Rect = function() {
 }
 
 // Inherit from SVG.Shape
-SVG.Rect.prototype = new SVG.Shape
\ No newline at end of file
+SVG.Rect.prototype = new SVG.Shape
+
+//
+SVG.extend(SVG.Container, {
+  // Create a rect element
+  rect: function(width, height) {
+    return this.put(new SVG.Rect().size(width, height))
+  }
+
+})
\ No newline at end of file
diff --git a/src/set.js b/src/set.js
new file mode 100644
index 0000000..c518c37
--- /dev/null
+++ b/src/set.js
@@ -0,0 +1,37 @@
+SVG.Set = function() {
+  this.children = []
+}
+
+SVG.extend(SVG.Set, {
+  // Add element to set
+  add: function(element) {
+    this.children.push(element)
+
+    return this
+  }
+  // Remove element from set
+, remove: function(element) {
+    var i = this.children.indexOf(element)
+    
+    if (i > -1)
+      this.children.splice(i, 1)
+
+    return this
+  }
+  // Move all children
+, move: function(x, y) {
+    return this.x(x).y(y)
+  }
+
+})
+
+// Create method aliases
+;['attr'].forEach(function(method) {
+
+  SVG.Set.prototype[method] = function() {
+    for (var i = 0, il = this.children.length; i < il; i++)
+      this.children[i][method](arguments)
+
+  }
+
+})
\ No newline at end of file
diff --git a/src/text.js b/src/text.js
index afd8724..22ec5bc 100644
--- a/src/text.js
+++ b/src/text.js
@@ -19,6 +19,7 @@ SVG.Text = function() {
 // Inherit from SVG.Element
 SVG.Text.prototype = new SVG.Shape
 
+//
 SVG.extend(SVG.Text, {
   // Move over x-axis
   x: function(x, a) {
@@ -123,6 +124,15 @@ SVG.extend(SVG.Text, {
   
 })
 
+//
+SVG.extend(SVG.Container, {
+  // Create text element
+  text: function(text) {
+    return this.put(new SVG.Text().text(text))
+  }
+
+})
+
 // tspan class
 SVG.TSpan = function() {
   this.constructor.call(this, SVG.create('tspan'))
diff --git a/src/viewbox.js b/src/viewbox.js
index f06ab6d..ff84b93 100644
--- a/src/viewbox.js
+++ b/src/viewbox.js
@@ -34,10 +34,12 @@ SVG.ViewBox = function(element) {
   
 }
 
+//
 SVG.extend(SVG.ViewBox, {
   // Parse viewbox to string
   toString: function() {
     return this.x + ' ' + this.y + ' ' + this.width + ' ' + this.height
   }
   
-})
\ No newline at end of file
+})
+