var xmlHttp

function incarca(str){ 
xmlHttp=GetXmlHttpObject();
if (xmlHttp==null){
    alert ("Your browser does not support AJAX!");
    return;
   } 

var url = "admin/require/inplay_center.php";
url     = url+"?q="+str;
url     = url+"&sid="+Math.random();
xmlHttp.onreadystatechange=stateChanged;
xmlHttp.open("GET",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;
}