function getXmlHttp() {
	var xmlHttp;
	try {
		// Firefox, Opera 8.0+, Safari
		xmlHttp=new XMLHttpRequest();
	} catch (e) {
		// Internet Explorer
		try {
			xmlHttp=new ActiveXObject("Msxml2.XMLHTTP");
		} catch (e) {
			try {
				xmlHttp=new ActiveXObject("Microsoft.XMLHTTP");
			} catch (e) {
				alert("Your browser does not support AJAX!");
				return false;
			}
		}
	}
	return xmlHttp;
}

function getPageContent(contentName) {
	var xmlHttp = getXmlHttp();
	xmlHttp.onreadystatechange=function()
	{
		if(xmlHttp.readyState == 4) {
			document.getElementById('content').innerHTML = xmlHttp.responseText;
			Lightbox.prototype.updateImageList();
		}
	}
	//xmlHttp.open('GET', 'content/' + contentName + '.html', true);
	xmlHttp.open('GET', 'content/' + contentName + '.html' + '?bustcache=' + new Date().getTime(), true);
	xmlHttp.send(null);
}