var add_links = function() {
	// creat the reveal time_blocks link and inject
	var reveal_a = new Element ('a', {'href':'', 'id':'reveal', 'class':'purple'});
	var reveal_p = new Element ('p', {'style':'margin: 15px 0 0 0;', 'id':'reveal_p'});
	reveal_p.injectAfter('filter_table');
	reveal_a.injectInside('reveal_p');
	$('reveal').innerHTML = 'Reveal time blocks.';
}