function done() {
				dom.remove(id);

				if (elm)
					elm.onreadystatechange = elm.onload = elm = null;

				callback();
			}
function done() {
				dom.remove(id);

				if (elm)
					elm.onreadystatechange = elm.onload = elm = null;

				callback();
			}
function done ( ) { dom . remove ( id ) ; if ( elm ) elm . onreadystatechange = elm . onload = elm = null ; callback ( ) ; }
Execute callback when script is loaded
Execute callback when script is loaded