var xmlHttp;

function fnCheckToSub(SubRef,StateRef,PCodeRef)	{ 
  try  {
	xmlHttp=GetXmlHttpObject();
	if (xmlHttp==null)	{
	  alert ("Your browser does not support this feature.");
	  return;
	}  
	var CheckSub=document.getElementById(SubRef).value;	  
	var StateID=document.getElementById(StateRef).value;
	var PCode=document.getElementById(PCodeRef).value;
	var url="asyncsubcheck.asp";
	url=url+"?StateID="+StateID+"&CheckSub="+CheckSub+"&PCode="+PCode;
	url=url+"&sid="+Math.random();
	xmlHttp.onreadystatechange=function()	{
		if (xmlHttp.readyState==4)  {
	      if (xmlHttp.responseText.search(/Error! /)!=-1)  {
			try  {
			  alert(xmlHttp.responseText.replace(/Error! /,""));
			  fnDispList(CheckSub,"ToSubList",SubRef,StateRef,PCodeRef,"");
			  return false;
			}
			catch(err)  {
			  err = "Line: 24->"+err
			  fnReportErrs(err);
			  fnValidate();
			}
	      }
		  else  {
		    fnValidate();
		  }
		}
	}
	xmlHttp.open("GET",url,true);
	xmlHttp.send(null);
  }
  catch(err)	{
	  err = "Line: 38->"+err
	  fnReportErrs(err);
	  fnValidate();
  }
}