function addEvent(elm, evType, fn, useCapture) {
	if (elm.addEventListener) {
		elm.addEventListener(evType, fn, useCapture);
		return true;
	}
	else if (elm.attachEvent) {
		var r = elm.attachEvent('on' + evType, fn);
		return r;
	}
	else {
		elm['on' + evType] = fn;
	}
}

function addLoadEvent(func)
{
	addEvent(window, 'load', func, false);
}

function elt(id) { return document.getElementById(id); }
function celt(val) { return document.createElement(val); }