$(document).ready(function() { 
	initMenu(); 
	} 
); 

function initMenu()
{
	var menuItems = document.getElementById('nav').getElementsByTagName('li');
	for (var i = 0; i < menuItems.length; i++){
		var menuItem = menuItems[i];
		menuItem.onmouseover = function() { this.className += ' hover'; }
		menuItem.onmouseout = function() { this.className = this.className.replace('hover',''); }
	}
}