Javascript: addEventListener and attachEvent
<script type=”text/javascript”>
function addListener(el, act, func) {
if (window.addEventListener) {el.addEventListener(act,func,false);}
else if (window.attachEvent) {el.attachEvent (”on”+act,func);}
else { eval(”el.on”+act+” = func;”);}
}
function documentOnLoad() { alert(123); }
addListener(window, “load”, documentOnLoad);
</script>
