var obj=document.getElementById('navigation');
	var elements=obj.getElementsByTagName('li');

	for(var i=0; i<elements.length; i++) {
		if(elements[i].className=='level-1')
			{
                              elements[i].onmouseover = new Function("this.className += ' hover'; ");
			      elements[i].onmouseout = new Function("this.className = 'level-1'; ");
			}
	}