$(document).ready(function(){
	
	if($('#UserDisplayName').length && $('#UserDisplayName').val() == '') {			
		$('#UserDisplayName').click(function(){				
			var first_name = $('#UserFirstName').val();
			var last_name = $('#UserLastName').val();				
			var display_name = first_name + ' ' + last_name[0] + '.';
			
			$('#UserDisplayName').val(display_name);
		});		
	}
	
});