var bustcachevar=1; //bust potential caching of external pages after initial request? (1=yes, 0=no)
var bustcacheparameter="";

function createRequestObject(){
	try	{
		xmlhttp = window.XMLHttpRequest ? new XMLHttpRequest() : new ActiveXObject("Microsoft.XMLHTTP");
	}	catch(e)	{
		alert('Sorry, but your browser doesn\'t support XMLHttpRequest.');
	};
	return xmlhttp;
}

function ajaxpage(url, containerid, requesttype){
	var page_request = createRequestObject();
	if (requesttype=='get'){
		if (bustcachevar) bustcacheparameter=(url.indexOf("?")!=-1)? "&"+new Date().getTime() : "?"+new Date().getTime()
		page_request.open('GET', url+bustcacheparameter, true);
		page_request.send(null);
	} else if (requesttype=='post') {
		page_request.open('POST', url, true);
		page_request.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
		page_request.setRequestHeader("Content-length", poststr.length);
		page_request.setRequestHeader("Connection", "close");
		page_request.send(poststr);
	};

	page_request.onreadystatechange=function(){
		loadpage(page_request, containerid);
	}
}

function loadpage(page_request, containerid){
	if (page_request.readyState == 4 && (page_request.status==200 || window.location.href.indexOf("http")==-1)) {
		document.getElementById(containerid).innerHTML=page_request.responseText;
		eval(document.getElementById(containerid).innerHTML);
	}
}