var clicks = 0;
var beginDay = '';
var endDay = '';
var beginInt = 0;
var endInt = 0;
var xmlHttp;

function returnDate(s)
{	
	if(clicks%2==0)
	{
		if (beginDay != '')
		{
			document.getElementById(beginDay).bgColor = "#FFFFFF";
		}		
		document.getElementById('txtStart').value = s;
		document.getElementById(s).bgColor = "#87DB4F";
		beginDay = s;
		beginInt = s;
	}
	else
	{
		if (endDay != '')
		{
			document.getElementById(endDay).bgColor = "#FFFFFF";
		}
		document.getElementById('txtEnd').value = s;
		document.getElementById(s).bgColor = "#87DB4F";
		endDay = s;
		endInt = s;
	}
	clicks++;
	
	/*(clicks >= 2)
	{
		xmlHttp=GetXmlHttpObject();
		if (xmlHttp==null)
		 {
		 alert ("Browser does not support HTTP Request");
		 return;
		 }
		var url="includes/ajax.php";
		url=url+"?function=getPrice";
		url=url+"&arrive="+ beginDay;
		url=url+"&leave="+ endDay;
		url=url+"&sid=" + Math.random();
		alert(url);
		xmlHttp.onreadystatechange=stateChanged;
		xmlHttp.open("GET",url,true);
		xmlHttp.send(null);
	}*/
}

function stateChanged() 
{ 
	if (xmlHttp.readyState==4 || xmlHttp.readyState=="complete")
	{ 
		document.getElementById("txtPrice").innerHTML=xmlHttp.responseText;
	}
}

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;
}