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";
                }
            }
        }
    }
}

var ROTOR_isIE = false;
if((document.all)&&(navigator.appVersion.indexOf("MSIE")!=-1))
  ROTOR_isIE = true;

if(ROTOR_isIE)
	ROTOR_addIEEvents(window, ["load"], function(){activateMenu('vertnav')});
else
	ROTOR_addnotIEEvents(window, ["load"], function(){activateMenu('vertnav')});


function ROTOR_addIEEvents(el, evs, func) {
	for (var i in evs)
  {
		el.attachEvent("on" + evs[i], func);
  }
}

function ROTOR_addnotIEEvents(el, evs, func) {
	for (var i in evs)
  {
 		el.addEventListener(evs[i], func, true);
  }
}