function Inint_AJAX() {
   try { return new ActiveXObject("Msxml2.XMLHTTP");  } catch(e) {} 
   try { return new ActiveXObject("Microsoft.XMLHTTP"); } catch(e) {} 
   try { return new XMLHttpRequest();          } catch(e) {} 
   alert("Ajax no work !!!");
   return null;
};


function ajaxtl() {
	var formname=document.tl;
  
	//document.getElementById("placebox").innerHTML=" "; //Clear display
	document.getElementById("placebox").innerHTML="<img src=../images/loading.gif>"; //Clear display
    var req = Inint_AJAX();
     req.open('POST', 'place-box.php', true); 
     req.onreadystatechange = function() { 
          if (req.readyState==4) {
               if (req.status==200) { //ACK complete
                    var data=req.responseText; //data return from PHP
					document.getElementById("placebox").innerHTML=data; //แสดงผล
               }
          }
     };
     req.setRequestHeader("Content-Type", "application/x-www-form-urlencoded; charset=iso-8859-1"); //send header
     req.send("location_id="+formname.locationid.value); //send cmd

}//end