notTextOrCommentNode = function notTextOrCommentNode () {
				return this.nodeType !== 3 && this.nodeType !== 8;
			}
handles the actual loading of a node. Used only internally.
@private
@name _load_node(obj [, callback])
@param  {mixed} obj
@param  {function} callback a function to be executed once loading is complete, the function is executed in the instance's scope and receives one argument - a boolean status
@return {Boolean}