docs: function scriptLoader(url, callback) {
  
  			var doc         = document, s = doc.createElement("script")
  			  , head        = doc.getElementsByTagName("head")[0]
  			  , node
  			  , done        = false;
  			;
  
  			// On success listener
  			function onScriptLoad() {
  				if ( !done && (!this.readyState || this.readyState == "loaded" || this.readyState == "complete") )
  				{
  					done     = true;
  					callback();
  				}
  			}
  
  			// On failure listener (callback receive an error false)
  			function onScriptError() {
  				callback(new Error("Packet loading error for " + url));
  			}
  
  			// Create the script tag
  			node         = document.createElement('script')
  			node.type    = config.scriptType || 'text/javascript';
  			node.charset = 'utf-8';
  			node.async   = true;
  
  			// Listen to the onload event
  			if (node.attachEvent &&
  					!(node.attachEvent.toString && node.attachEvent.toString().indexOf('[native code') < 0)) {
  				node.attachEvent('onreadystatechange', onScriptLoad);
  			} else {
  				node.addEventListener('load', onScriptLoad, false);
  				node.addEventListener('error', onScriptError, false);
  			}
  
  			// Set the src value with the packed script url
  			node.src = url;
  
  			// Start loading by adding the script tag in the head
  			head.appendChild(node);
  
  		}