// JavaScript Document
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;
}

var http = GetXmlHttpObject(); 

function updateoptions(loc_id,cat_id,county,acc_id,reset_option)
{	
	http.open('get','/http/http_get_counties.php?a_id=' + acc_id + '&l_id=' + loc_id + '&c_id=' + cat_id + '&c_name=' + county + '&reset=' + reset_option);
	http.onreadystatechange = setoptions;// it is function name,defined below 
	http.send(null);
}

function setoptions()
{	
	if(http.readyState == 4)
	{	var response = http.responseText;	
	//alert(response);
		document.getElementById('filtered-selection').innerHTML = response;//verify div tag id
	}
}