function callAHAH(url, parameters, pageElement, callMessage, errorMessage) {
	document.getElementById(pageElement).innerHTML = callMessage;
     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('post',url, true);
	req.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
      	req.setRequestHeader("Content-length", parameters.length);
      	req.setRequestHeader("Connection", "close");
	req.send(parameters);
  }

function responseAHAH(pageElement, errorMessage) {
   var output = '';
   if(req.readyState == 4) {
      if(req.status == 200) {
         output = req.responseText;
         document.getElementById(pageElement).innerHTML = output;
         } else {
         document.getElementById(pageElement).innerHTML = errorMessage+"\n"+output;
         }
      }
  }