function create_script_load_listener(elem,registry_item,flag,onload) {
		elem.onload = elem.onreadystatechange = function() {
			if ((elem.readyState && elem.readyState != "complete" && elem.readyState != "loaded") || registry_item[flag]) return;
			elem.onload = elem.onreadystatechange = null;
			onload();
		};
	}
function create_script_load_listener(elem,registry_item,flag,onload) {
		elem.onload = elem.onreadystatechange = function() {
			if ((elem.readyState && elem.readyState != "complete" && elem.readyState != "loaded") || registry_item[flag]) return;
			elem.onload = elem.onreadystatechange = null;
			onload();
		};
	}
function create_script_load_listener ( elem , registry_item , flag , onload ) { elem . onload = elem . onreadystatechange = function ( ) { if ( ( elem . readyState && elem . readyState != "complete" && elem . readyState != "loaded" ) || registry_item [ flag ] ) return ; elem . onload = elem . onreadystatechange = null ; onload ( ) ; } ; }
creates a script load listener
creates a script load listener