function loadGame(uri_name) {
$('main_activity_app').update('');
$('main_activity_app').update( '<iframe scrolling="no" src="'+base_url+'index.php/activities/get/'+uri_name+'" id="gameFrame" width="720" height="468" style="border:none;visibility:visible"></iframe>');
}
function unloadGame() {
	$('main_activity_app').update('');
}