var xmlHttp
function ajax01(pyt,clinic_id){ 
  //alert('test');
  //alert(pyt);
    xmlHttp=GetXmlHttpObject();
    if (xmlHttp==null)
    {
        alert ("browser is not support");
    return;
    } 
    var url="../../th/ajax/ajax_clinic.php";
    url=url+"?pyt="+pyt+"&clinic_id="+clinic_id;
    //alert(url);
    url=url+"&sid="+Math.random();
    xmlHttp.onreadystatechange=stateChanged;
    xmlHttp.open("POST",url,true);
    xmlHttp.send(null);
}

function stateChanged(){ 
    if (xmlHttp.readyState==4){ 
        document.getElementById("txtHint").innerHTML=xmlHttp.responseText;
    }
}

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;
}