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].getElementsByTagName("UL").length > 0){
                /* assign the function to the LI */
             	lis[i].onmouseover=function() {	
				//alert(this.getElementsByTagName("UL")[0].style.display);
                   /* display the inner menu */
                   this.getElementsByTagName("UL")[0].style.display="block";
      			}
				lis[i].onmouseout=function() {                       
                    this.getElementsByTagName("UL")[0].style.display="none";
				}
            }
		}
	}
}
function init(){
    activateMenu('nav'); 
}
window.onload=init;