activateMenu = function(nav)
{
	var navroot = document.getElementById(nav);
	var lis=navroot.getElementsByTagName("LI");  
	//alert(lis.length);
	for (i=0; i<lis.length; i++)
	{
		/*alert(lis[i].lastChild.tagName);*/
			
			if(lis[i].lastChild.tagName=="UL")
			{
				
				lis[i].onmouseover=function()
				{	
					var a = this.getElementsByTagName("A");
					a[0].onfocus();
					a[0].className = "mainnavMOver";
					a[0].onmouseover();
					this.lastChild.style.display="block";
				}
				lis[i].onmouseout=function()					
				{                  
					var a = this.getElementsByTagName("A");
					a[0].onmouseout();
					a[0].className = "mainnavMOut";
					this.lastChild.style.display="none";
				}
			}
	}

}