function getPackage(nts)
{

	if (nts<0)
	{
		alert ("Invalid Date ! Please select correct date !");
		return;
	}
	else if (nts>4)
	{
		alert ("North Sikkim Packages are upto 4 nights only ! ");
		return;
	}
	else if(nts==0)
	{
		alert("At least 1 night is needed for the package !");
		return;
	}

	var xmlHttp=null;
	
	if (nts.length==null)	
	{
		document.getElementById("phPackageOptions").innerHTML="";
		return;
	}
	
	try
	{
		xmlHttp = new XMLHttpRequest();
	}
	catch(e)
	{	
		try
		{
			xmlHttp = new ActiveXObject("Msxml2.XMLHTTP");
		}
		 catch(e)	
		{
			try
			{
				xmlHttp = new ActiveXObject("Microsoft.XMLHTTP");
			}
			catch(e)
			{
				alert("Your browser does not support AJAX ! ");
				return;
			}
		}	
	}

	if (xmlHttp == null) 
	{
		alert ("Your browser does not support ajax and may not function properly ! ");
		return;	
	}
	
	var url = "getPackage.asp";
	url = url + "?nts=" + nts;
	
	xmlHttp.onreadystatechange=function()
	{
		if (xmlHttp.readyState==4)
		{
			document.getElementById("phPackageOptions").innerHTML=xmlHttp.responseText;
		}	
	}
	
	xmlHttp.open("GET", url, true);
	xmlHttp.send (null);
}