var req1;
var doesNotSupport1 = true;
function get_product(url,pid,r){
    //alert(url);

    if(window.XMLHttpRequest) {
       req1 = new XMLHttpRequest;
    } else if (window.ActiveXObject) {
       req1 = new ActiveXObject("Microsoft.XMLHTTP");
    }

    if(req1) {

       url=url+"?pro_id="+pid+"&ref="+r;
       req1.open("POST",url, true);
       req1.setRequestHeader('Content-Type','application/x-www-form-urlencoded');

       var postvalues="";
       postvalues="pro_id="+pid+"&ref="+r;
       //alert(postvalues);
       req1.send(postvalues);
       req1.onreadystatechange = processReqChange3;

    } else {
       alert("Please use latest version of the current browser to function properly");
       doesNotSupport1 = false;
    }
}

function processReqChange3() {

     //alert(req1.readyState);

    if(req1.readyState == 4) {
        //alert(req1.status);
       if(req1.status == 200) {
          var aa  = req1.responseText;
          var splitvar=aa.split("~");

          //alert(aa);
          if(splitvar[0] == "0"){
             alert("Product code should be valid");
          }
          else{
            //alert(splitvar[1]);
             var b = "pro_name_"+splitvar[1];
             
             //alert(b);
             document.getElementById(b).innerHTML = splitvar[0];
          }
      }
  }

}