li menu needs class of “selected”

Question

when the user clicks on a menu tab i want it to remain selected with it a white button.

here is my attempt but its not working. if you click the home button it does

Answer 1

As others stated you dont have a .selected class also your js will set all li elements to selected when one is clicked you may want to change it to this on the second line

$('#navigation  li').click(function() {
   $(this).addClass('selected');
});