var url = "http://affiliate.kickapps.com/service/isUserLoggedIn.kickAction?callback=?"
function checkLogin(data) {

   if(data.isLoggedIn == "true") {
	   // Hide Logged Out DIV
           document.getElementById('loggedOutMessage').style.display='none';
           // Show Logged In DIV
	   document.getElementById('loggedInMessage').style.display='block';
   } else {
           // Show Logged Out DIV           
           document.getElementById('loggedOutMessage').style.display='block';
           // Hide Logged In DIV
	   document.getElementById('loggedInMessage').style.display='none';
	   
   }
}

$.ajax({
 dataType: 'jsonp',
 data: {as: ######},
 jsonp: 'checkLogin',
 url: url,
 success: checkLogin
});

Kickapps:  Determine if User is logged in on external page

login

JavaScript