function $(id) { return document.getElementById(id); }

function $empty() { }

function $observe(target, event, fx)
{
	if (target.addEventListener) target.addEventListener(event,fx, false);
	else if (target.attachEvent) target.attachEvent('on' + event, fx);
}

$Element = {

	removeChildren : function(e)
	{
		while (e.firstChild) e.removeChild(e.firstChild);
		return e;
	}

};