activateMenu = function(nav) {

	if (document.all && document.getElementById(nav).currentStyle) 
	{  
        var navroot = document.getElementById(nav);

        var lis=navroot.getElementsByTagName("LI");  
        for (i=0; i<lis.length; i++) 
		{
            if(lis[i].lastChild.tagName=="UL")
			{
             	lis[i].onmouseover=function() 
				{	
                   this.lastChild.style.display="block";
                }
                lis[i].onmouseout=function() 
				{
                   this.lastChild.style.display="none";
                }
            }
        }
    }
}
function setLayout() {

}
window.onload= function(){
    activateMenu('nav');
    setLayout();
}
window.onresize = function(){ setLayout(); }