function initMenu(){
	var nodes = document.getElementById("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", "");
		}
	}
}
if (document.all && !window.opera) attachEvent("onload", initMenu);

function initScript() {
	addClass({
		tagName:'li',
		tagClass:'sub-menu',
		classAdd:'active',
		addToParent: 'true'
	})	
}
function addClass (_options) {
	var _tagName = _options.tagName;
	var _tagClass = _options.tagClass;
	var _classAdd = _options.classAdd;
	var _addToParent = false || _options.addToParent;
	var _el = document.getElementsByTagName(_tagName);
	if (_el) {
		for (var i=0; i < _el.length; i++) {
			if (_el[i].className.indexOf(_tagClass) != -1) {
				_el[i].getElementsByTagName('a')[0].onmouseover = function() {
					if (_addToParent) {
						if (this.parentNode.className.indexOf(_classAdd) == -1) {
							this.parentNode.className += ' '+_classAdd;
						} else {
							this.parentNode.className = this.parentNode.className.replace(_classAdd,'');
						}
					} else {
						if (this.className.indexOf(_classAdd) == -1) {
							this.className += ' '+_classAdd;
						} else {
							this.className = this.className.replace(_classAdd,'');
						}
					}
					return false;
				}
			}
		}
	}
}
if (window.addEventListener)
	window.addEventListener("load", initScript, false);
else if (window.attachEvent)
	window.attachEvent("onload", initScript);