function ieHover()
{
	var nav = document.getElementById("nav");
	if (nav)
	{
		var nodes = nav.getElementsByTagName("li");
		for (var i=0; i<nodes.length; i++)
		{
			nodes[i].onmouseover = function() 
			{
				this.className += " hover";
			}
			nodes[i].onmouseout = function()
			{
				this.className = this.className.replace(" hover", "");
			}
		}
	}
}

function initPage() {
	var _link = document.getElementById('open');
	var _popup = document.getElementById('popup');
	
	if (_link && _popup) {
		_link.onclick = function(){
			if (_popup.className.indexOf('open') != -1) {
				_popup.className = _popup.className.replace('open','');
			} else {
				_popup.className += 'open';	
			}
		}
	}
}

if (window.addEventListener)
	window.addEventListener("load", initPage, false);
else if (window.attachEvent) {
	window.attachEvent("onload", initPage);
	if (!window.opera)
		window.attachEvent("onload", ieHover);
}