//Start Time Function

function startCallback() {
     if (xmlhttp.readyState == 4) {
          if (xmlhttp.status == 200) {
               document.getElementById("useronline").innerHTML = xmlhttp.responseText;
               delete xmlhttp;
               setTimeout("showuseronline()", 10000);
          }
     }
}

function showuseronline() {
     xmlhttp = connect_AJAX();
     var url = "useronline.php";
     xmlhttp.open("GET", url, true);
     xmlhttp.onreadystatechange = startCallback;
     xmlhttp.send(null);
}

//sendPost

function connect_AJAX () {
     var xmlhttplog = false;
     try {
          xmlhttplog = new ActiveXObject("Msxml2.XMLHTTP");
     } catch(e) {
          try {
               xmlhttplog = new ActiveXObject("Microsoft.XMLHTTP");
          } catch(e) {
               xmlhttplog = false;
          }
     }

     if(!xmlhttplog && document.createElement){
          xmlhttplog = new XMLHttpRequest();
     }
     return xmlhttplog;
}


function getData(page_url,value,showid) 
{
     var req = connect_AJAX(); 
     req.open('POST', page_url, true);
     req.onreadystatechange = function() { 
          if (req.readyState==4) {
               if (req.status==200) { 
					//alert(req.responseText);
                    document.getElementById(showid).innerHTML=req.responseText;
               }
          }
     };
     req.setRequestHeader("Content-Type", "application/x-www-form-urlencoded;charset=utf-8"); //Header 
     req.send(value);
}
//sendPost

function Inint_AJAX() {
   try { return new ActiveXObject("Msxml2.XMLHTTP");  } catch(e) {} //IE
   try { return new ActiveXObject("Microsoft.XMLHTTP"); } catch(e) {} //IE
   try { return new XMLHttpRequest();          } catch(e) {} //Native Javascript
   alert("XMLHttpRequest not supported");
   return null;
};

function loadtooltip(obj, url,param) {
     //AJAX
     var req = Inint_AJAX();
     req.onreadystatechange = function () { 
          if (req.readyState==4) {
               if (req.status==200) {
                    displaytooltip(obj, req.responseText);
               } 
          } 
     };
     //สร้าง connection
     req.open("POST", url, true); 
     req.setRequestHeader("Content-Type", "application/x-www-form-urlencoded");
     req.send(param); //ส่งค่า
};