Why not use jQuery show
and hide
?
Hide the elements you want to hide (duh) on page load with CSS:
#id1, #id2, .. {
display: none;
}
Or you can hide it with Javacript:
$('#id1, #id2, ..').hide();
Show or hide them by using:
$('#btn2').click(function() {
$('#id1, #id3').hide();
$('#id2').show();
});