/*http://www.quirksmode.org/blog/archives/2005/10/_and_the_winner_1.html*/
function addEvent( obj, type, fn ){
	if (obj.addEventListener)
		obj.addEventListener( type, fn, false );
	else if (obj.attachEvent){
		obj["e"+type+fn] = fn;
		obj[type+fn] = function() { obj["e"+type+fn]( window.event );   }
		obj.attachEvent( "on"+type, obj[type+fn] );
	}
}

function removeEvent( obj, type, fn ){
	if (obj.removeEventListener)
		obj.removeEventListener( type, fn, false );
	else if (obj.detachEvent){
		obj.detachEvent( "on"+type, obj[type+fn] );
		obj[type+fn] = null;
		obj["e"+type+fn] = null;
	}
}

function sleep(delay) {
	var start = new Date().getTime(); 
	while (new Date().getTime() < start + delay){
	} 
}

function insertafter(newChild, refChild) { 
	refChild.parentNode.insertBefore(newChild,refChild.nextSibling); 
}