var loadedPageId;
function loadPage( url, elementID )	{
	if ( loadedPageId ){
		document.getElementById( loadedPageId ).className = "inactivePage";
	}
	
	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 && xmlhttp.status == 200)	{
			document.getElementById("content").innerHTML = xmlhttp.responseText;
		}
		else	{
			document.getElementById("content").innerHTML = "There was a problem with the request: Status " + xmlhttp.status;
		}
	};
	xmlhttp.open("GET",url,true);
	xmlhttp.send();
	
	document.getElementById(elementID).className = "activePage";
	loadedPageId = elementID;
}