// JavaScript Document

function createRequestObject() {

   var req;

   if(window.XMLHttpRequest){
      req = new XMLHttpRequest();
   } else if(window.ActiveXObject) {
      req = new ActiveXObject("Microsoft.XMLHTTP");
   } else {
      alert('Problem creating the XMLHttpRequest object');
   }

   return req;

}

var http = createRequestObject(); 

function sendRequest(id) {
	http.open('get', 'includes/menu.php?id='+id);
	http.onreadystatechange = handleResponse; 
	http.send(null); 
}

function handleResponse() {
	if(http.readyState == 4 && http.status == 200){
		if(http.responseText) {
			document.getElementById('menu').innerHTML = http.responseText;
		} else {
			document.getElementById('menu').innerHTML = "";
		}
	} else {
		document.getElementById('menu').innerHTML = "";
	}
}