function callAHAH(url, pageElement, callMessage, errorMessage) { document.getElementById('test').innerHTML='<div align="center" style="padding:10px"><img src="big-ajax-loader.gif" /></div>'; try { req = new XMLHttpRequest(); /* e.g. Firefox */ } catch(e) { try { req = new ActiveXObject("Msxml2.XMLHTTP"); /* some versions IE */ } catch (e) { try { req = new ActiveXObject("Microsoft.XMLHTTP"); /* some versions IE */ } catch (E) { req = false; } } } req.onreadystatechange = function() {responseAHAH(pageElement, errorMessage);}; req.open("GET",url,true); req.send(null); } 
function responseAHAH(pageElement, errorMessage) { if(req.readyState == 4) { if(req.status == 200) { output = req.responseText; document.getElementById(pageElement).innerHTML = output; } else { document.getElementById(pageElement).innerHTML = errorMessage+"\n"+responseText; } } }