activateMenu = function(nav) {

    /* currentStyle restricts the Javascript to IE only */

	if (document.all && document.getElementById(nav).currentStyle) {  

        var navroot = document.getElementById(nav);

        

        /* Get all the list items within the menu */

        var lis=navroot.getElementsByTagName("LI");  

        for (i=0; i<lis.length; i++) {

        

           /* If the LI has another menu level */

            if(lis[i].lastChild.tagName=="UL"){

            

                /* assign the function to the LI */

             	lis[i].onmouseover=function() {	

                

                   /* display the inner menu */

                   this.lastChild.style.display="block";

                }

                lis[i].onmouseout=function() {                       

                   this.lastChild.style.display="none";

                }

            }

        }

    }

}

window.onload= function(){

    /* pass the function the id of the top level UL */

   activateMenu('nav');  

 /*	activateMenu('vertnav'); */

}