function checkLogin() {
	if (loggedin == 1)
		{
		document.getElementById('loggedin-box').style.display = "block";
		document.getElementById('btn-onlinecourses').style.display = "block";
		document.getElementById('notloggedin-box').style.display = "none";
		}
	else
		{
		document.getElementById('notloggedin-box').style.display = "block";
		document.getElementById('loggedin-box').style.display = "none";
		document.getElementById('btn-onlinecourses').style.display = "none";
		}
}