var tabFunctions ={
	initialize: function() {
		$$('.tab_txt').each(function(elm){
			elm.addEvent('click', function(e){
				e.stop();
				$$('.tap_content').setStyle('display', 'none');
							
				childeren = $(document.body).getElements('.active_tab');
				childeren.each(function(child){
					child.removeClass('active_tab');
				});
				
				elm.addClass('active_tab');
				tap_id  = elm.get('id');  
				tap_id = tap_id.split('_');
				
				$('content_'+tap_id[1]).setStyle('display', 'block');
			});
		});
	}

}