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

var http = createRequestObject(); 

var pg; /* global variable */

function getPage(n) {
	pg = n;
	
	http.open('get', n + '.htm');
    http.onreadystatechange = complete;
    http.send(null);
}

function complete(){
	var clpage = " ";
	if (pg == 'sites') {
		document.getElementById('residences-pane').innerHTML = clpage;
	 if(http.readyState == 4) {	
		var response = http.responseText;
		document.getElementById(pg + '-pane').innerHTML = response;
		}
	} else if (pg == 'residences') {
		document.getElementById('floorplan-pane').innerHTML = clpage;
	 	if(http.readyState == 4) {	
		var response = http.responseText;
		document.getElementById(pg + '-pane').innerHTML = response;
	} 
	} else if (pg == 'floorplan') {
		document.getElementById('location-pane').innerHTML = clpage;
	 	if(http.readyState == 4) {	
		var response = http.responseText;
		document.getElementById(pg + '-pane').innerHTML = response;
	} 
	} else if (pg == 'location') {
		document.getElementById('builder-pane').innerHTML = clpage;
	 	if(http.readyState == 4) {	
		var response = http.responseText;
		document.getElementById(pg + '-pane').innerHTML = response;
	} 
	}  else if (pg == 'builder') {
		document.getElementById('news-pane').innerHTML = clpage;
	 	if(http.readyState == 4) {	
		var response = http.responseText;
		document.getElementById(pg + '-pane').innerHTML = response;
	} 
	} else if (pg == 'news') {
		document.getElementById('directions-pane').innerHTML = clpage;
	 	if(http.readyState == 4) {	
		var response = http.responseText;
		document.getElementById(pg + '-pane').innerHTML = response;
	} 
	} else if(http.readyState == 4) {	
		var response = http.responseText;
		document.getElementById(pg + '-pane').innerHTML = response;
		}
	}