/**
Shadowbox.init();

//read a cookie
function readCookie(cookieName) 
{
	var theCookie=" "+document.cookie;
	var ind=theCookie.indexOf(" "+cookieName+"=");
	if (ind==-1) ind=theCookie.indexOf(";"+cookieName+"=");
	if (ind==-1 || cookieName=="") return "";
	var ind1=theCookie.indexOf(";",ind+1);
	if (ind1==-1) ind1=theCookie.length; 
	return unescape(theCookie.substring(ind+cookieName.length+2,ind1));
}

//set a cookie
function setCookie(cookieName,cookieValue,nDays) 
{
	 var today = new Date();
	 var expire = new Date();
	 if (nDays==null || nDays==0) nDays=1;
 	 expire.setTime(today.getTime() + 3600000*24*nDays);
 	 document.cookie = cookieName+"="+escape(cookieValue)
                + ";path=/";  //+ ";expires="+expire.toGMTString();
}

//check if remaining_seconds cookie exists, if not, create it
if(readCookie("remaining_seconds") == "") 
{
	setCookie("remaining_seconds", 120, null); //120 seconds
}

//check if remaining_page_visits cookie exists, if not, create it
if(readCookie("remaining_page_visits") == "") 
{
	setCookie("remaining_page_visits", 3, null); //3 remaining visits
}

//get values for cookies
var remaining_seconds = readCookie("remaining_seconds");
var remaining_page_visits = readCookie("remaining_page_visits");

//check how many page visits there are left.
if(remaining_page_visits > 0)
{
	remaining_page_visits--;
	setCookie("remaining_page_visits", remaining_page_visits, null);
}

if(remaining_seconds != 0)
{
	var int = window.setInterval("countdown()", 1000);
}
else if (remaining_seconds == 0 && remaining_page_visits == 0)
{
	showpopup(true);
}

function countdown() 
{ 
	remaining_seconds--;
	setCookie("remaining_seconds", remaining_seconds, null);

	if (remaining_seconds == 0) 
	{ 
		window.clearInterval(int);
	
		if(remaining_page_visits == 0)
		{
			showpopup(false);
		}
	}
}

function showpopup(showAtPageLoad)
{
	if(showAtPageLoad == true)
	{
		window.addEvent('load', function()
		{
			Shadowbox.open({
				content:    'http://www.sense.info/popup/popup.html',
				player:     "iframe",
				height:     140,
				width:      644
			});
		});
	}
	else
	{
		Shadowbox.open({
			content:    'http://www.sense.info/popup/popup.html',
			player:     "iframe",
			height:     140,
			width:      644
		});
	}
	setCookie("remaining_page_visits", -1, null); //set remaing page visits to -1, that way people who already got the popup will never get it again
}
**/