var startZIndex = 300;
var ieHover = function() {
	var ul, ifr;
	var arr_li = document.getElementById('navTop').getElementsByTagName('li');
	for(var i=0; i<arr_li.length; i++ ){
		arr_li[i].onmouseover = function(){ this.className += ' ieHover'};
		arr_li[i].onmouseout = function(){ this.className = this.className.replace(' ieHover','')};
		startZIndex--;
		arr_li[i].style.zIndex = startZIndex;
		ul = arr_li[i].getElementsByTagName('ul')[0];

		if(ul){
			ifr = arr_li[i].appendChild(document.createElement('iframe'));
			ifr.src = 'about:blank';
			ifr.style.width = ul.offsetWidth+'px';
			ifr.style.height = ul.offsetHeight+'px';
			ifr.style.position = 'absolute';
			ifr.style.left = '-1px';
			ifr.style.top = '20px';
			ifr.style.zIndex = 99;
		}
	}
}
if (window.attachEvent) window.attachEvent('onload', ieHover);

function toggle(obj){
	while(obj.tagName!='LI') obj = obj.parentNode;
	if(obj.className.indexOf('collapsed')>-1){
		obj.className = obj.className.replace(' collapsed',' expanded');
	} else {
		obj.className = obj.className.replace(' expanded',' collapsed');
	}
}