var xmlHttp

var divId;

function getSubCategory(catId,subCatgeoryId)
{
	divId =subCatgeoryId; 
	if (catId == '')
	{ 
		document.getElementById(divId).innerHTML="";
		return;
	}
	xmlHttp=GetXmlHttpObject()
	if (xmlHttp==null)
	{
	alert ("Your browser does not support AJAX!");
	return;
	} 
	var url="getSubcategory.php?catId=";
	url=url+catId+"&divName="+divId;
	alert(url);
	xmlHttp.onreadystatechange=stateChanged;
	xmlHttp.open("GET",url,true);
	xmlHttp.send(null);
} 

function stateChanged() 
{
	if (xmlHttp.readyState==4)
	{
		var tresponse = xmlHttp.responseText;
		document.getElementById(divId).innerHTML=tresponse;
	}
}

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;
}