var ok = false;
	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 populateMenu(nr){
		 http.open('get','menu.php?id='+nr);
	     http.onreadystatechange = updateAnunt;
		 http.send(null);
	     return false;
}

function updateAnunt(){
	   if(http.readyState == 4){
			ok = false;
			document.getElementById('idMenu').innerHTML = http.responseText;
	   }
}