activateMenu = function(catnav) {


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


        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";
                }
            }
        }
    }
}
window.onload= function(){
    activateMenu('catnav'); 
}