var http = createRequestObject();

function createRequestObject() {
   var objAjax;
   var browser = navigator.appName;
   if(browser == "Microsoft Internet Explorer"){
      objAjax = new ActiveXObject("Microsoft.XMLHTTP");
   }else{
      objAjax = new XMLHttpRequest();
   }
   return objAjax;
}

function getMenu(){
   http.open('get','/jscript/menu.html'); 
   http.setRequestHeader('If-Modified-Since', 'Thu, 1 Jan 1970 00:00:00 GMT');
   http.setRequestHeader('Cache-Control', 'no-cache');
   http.onreadystatechange = updateNewContent; 
   http.send(null);
   return false;
}

function updateNewContent(){
   if(http.readyState == 4){ document.getElementById('nav').innerHTML = http.responseText; }
}


sfHover = function() {
	var sfEls = document.getElementById("nav").getElementsByTagName("LI");
	for (var i=0; i<sfEls.length; i++) {
		sfEls[i].onmouseover=function() {
			this.className+=" sfhover";
		}
		sfEls[i].onmouseout=function() {
			this.className=this.className.replace(new RegExp(" sfhover\\b"), "");
		}
	}
}
if (window.attachEvent) window.attachEvent("onload", sfHover);