var xmlHttp

function changeFilter()
{ 
	var val;
	val=document.getElementById("secId").value;
	var arr;

	arr=document.getElementById("hidSS").value;
	xmlHttp=GetXmlHttpObject()
	if (xmlHttp==null)
	{
		alert ("Browser does not support HTTP Request")
		return
	} 
	var url="components/com_directory/ajax/getfilter_subsector.php"
	url=url+'?sid='+val
	url=url+'&chk='+arr
	url=url+"&mid="+Math.random()

	xmlHttp.onreadystatechange=stateChangedsubsect
	xmlHttp.open("GET",url,true)
	xmlHttp.send(null)
}

	
function stateChangedsubsect() 
{ 
	if (xmlHttp.readyState==4 || xmlHttp.readyState=="complete")
	{ 
		//alert(xmlHttp.responseText);
		document.getElementById("showfilter").innerHTML =xmlHttp.responseText;
		
		
	} 
} 

function GetXmlHttpObject()
{ 
var objXMLHttp=null
if (window.XMLHttpRequest)
{
objXMLHttp=new XMLHttpRequest()
}
else if (window.ActiveXObject)
{
objXMLHttp=new ActiveXObject("Microsoft.XMLHTTP")
}
return objXMLHttp
}