docs: function(url, onload, onerror, binary, timeout, ontimeout)
  	{
  		var req = new mxXmlRequest(url, null, 'GET');
  		
  		if (binary != null)
  		{
  			req.setBinary(binary);
  		}
  		
  		req.send(onload, onerror, timeout, ontimeout);
  		
  		return req;
  	}