// JavaScript Document
var xmlhttp;
var html_id;
function loadXMLDoc(url, id) {
	xmlhttp=null;
	html_id = id;
	if (window.XMLHttpRequest) {
		// code for Firefox, Opera, IE7, etc.
		xmlhttp=new XMLHttpRequest();
	}
	else if (window.ActiveXObject) {
		// code for IE6, IE5
		xmlhttp=new ActiveXObject("Microsoft.XMLHTTP");
	}
	if (xmlhttp != null) {
		xmlhttp.onreadystatechange=state_Change;
		xmlhttp.open("GET",url,true);
		xmlhttp.send(null);
	}
	else {
		alert("Your browser does not support XMLHTTP.");
	}
}

function state_Change() {
	if (xmlhttp.readyState==4) {
		// 4 = "loaded"
		if (xmlhttp.status==200) {
		// 200 = "OK"
		document.getElementById(html_id).innerHTML=xmlhttp.responseText;
		}
		else {
			alert("Problem retrieving data:" + xmlhttp.statusText);
		}
  	}
}

function ajaxCrossDomainRequest(proxy) {
	var xmlhttp;
	if (window.XMLHttpRequest)
	  {
	  // code for IE7+, Firefox, Chrome, Opera, Safari
	  xmlhttp=new XMLHttpRequest();
	  }
	else
	  {
	  // code for IE6, IE5
	  xmlhttp=new ActiveXObject("Microsoft.XMLHTTP");
	  }
	xmlhttp.onreadystatechange=function() {
		if (xmlhttp.readyState == 4) {
			document.getElementById('mcmaster_global_navigation').innerHTML = xmlhttp.responseText;
		}
	}
	xmlhttp.open("GET", '/transport.php?action=' + 
		escape(proxy), true);
	xmlhttp.send(null);
}