code: function ( arg ) {
  		var obj = document.createDocumentFragment();
  
  		if ( arg ) {
  			array.each( array.cast( element.create( "div", {innerHTML: arg}, obj ).childNodes ), function ( i ) {
  				obj.appendChild( i );
  			});
  
  			obj.removeChild( obj.childNodes[0] );
  		}
  
  		return obj;
  	}
docs: Creates a document fragment
  
  @method frag
  @param  {String} arg [Optional] innerHTML
  @return {Object}     Document fragment