$(function(){
	$('.hovertip').hide();
	$('.hovertip:first').show();
	$('.show_desc').addClass('not_active');
	$('.show_desc').click(function(){
		
		var text = $(this).text();
		var i = new Number(text);
		
		$('.hovertip').hide();
		$('.hovertip:eq(' + i + ")").fadeIn('slow');
		$('.show_desc').removeClass('active').addClass('not_active');
		$(this).removeClass('not_active').addClass('active');
		});
			
});