function addtoCounter() {

    if(window.cid)
        clearInterval(cid);
        
    document.getElementById("counter").innerHTML = "";
    xmlHttp=GetXmlHttpObject();
    if (xmlHttp==null) {
        alert ("Your browser does not support AJAX!");
        return;
    }
    var url = "./counter.asp";
    xmlHttp.onreadystatechange=function() {
        if (xmlHttp.readyState==4) { 
            document.getElementById("counter").innerHTML=xmlHttp.responseText;
            cid = setInterval("getCounter()", 15000);
        }
    }
    xmlHttp.open("GET",url,true);
    xmlHttp.send(null);
    return;
}

function getCounter() {

    xmlHttp=GetXmlHttpObject();
    if (xmlHttp==null) {
        alert ("Your browser does not support AJAX!");
        return;
    }
    var url = "./getcounter.asp";
    xmlHttp.onreadystatechange=function() {
        if (xmlHttp.readyState==4) { 
            document.getElementById("counter").innerHTML=xmlHttp.responseText;
        }
    }
    xmlHttp.open("GET",url,true);
    xmlHttp.send(null);
    return;
}

function GetXmlHttpObject() {

  var xmlHttp=null;
  try
    {
    // Firefox, Opera 8.0+, Safari
    xmlHttp=new XMLHttpRequest();
    }
  catch (e)
    {
    // Internet Explorer
    try
      {
      xmlHttp=new ActiveXObject("Msxml2.XMLHTTP");
      }
    catch (e)
      {
      xmlHttp=new ActiveXObject("Microsoft.XMLHTTP");
      }
    }
  return xmlHttp;
}