var xmlHttp_CV

function ChangeValidity(category)
{ 
	
	xmlHttp_CV=GetXmlHttpObject_CV()
	if (xmlHttp_CV==null)
	{
	alert ("Browser does not support HTTP Request")
	return
	}
	
var url="ChangeValidity.aspx"

url=url+"?ctgry="+category

url=url+"&sid="+Math.random()
xmlHttp_CV.onreadystatechange=stateChanged_CV 
xmlHttp_CV.open("GET",url,true)
xmlHttp_CV.send(null)
}

function stateChanged_CV() 
{ 
if (xmlHttp_CV.readyState==4 || xmlHttp_CV.readyState=="complete")
{

document.getElementById("div_validity").innerHTML="";
document.getElementById("div_validity").innerHTML=xmlHttp_CV.responseText; 
document.getElementById("div_hotelprice").innerHTML="";

} 
} 

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