packages/flab/LAB.src.js
function(){
							registry_item.ready = true;
							for (var i=0; i<registry_item.ready_listeners.length; i++) {
								registry_item.ready_listeners[i]();
							}
							registry_item.ready_listeners = [];
						}
function(){
							registry_item.ready = true;
							for (var i=0; i<registry_item.ready_listeners.length; i++) {
								registry_item.ready_listeners[i]();
							}
							registry_item.ready_listeners = [];
						}
depends on script-preloading