function initPage(){
	var _menu = document.getElementById('nav');
	if(_menu){
		var _list = _menu.getElementsByTagName('li');
		var _a = -1;
		for(var i = 0; i < _list.length; i++){
			if(_list[i].parentNode == _menu){
				_list[i].onmouseover = function(){
					if(_a != -1 && _a != this) _a.className = _a.className.replace('active','');
					if(this.className.indexOf('active') == -1) this.className += ' active';
					_a = this;
				}
				if(_list[i].className.indexOf('active') != -1) _a = _list[i];
			}
		}
	}
}
if (window.addEventListener) window.addEventListener("load", initPage, false);
else if (window.attachEvent && !window.opera) window.attachEvent("onload", initPage);