function show_ff_tab(tab_name) {

			$('ff_tabbar_'+tab_name).addClassName('activo');

			$$('#ff_tabbar>div[id!=ff_tabbar_'+tab_name+']').invoke('removeClassName','activo');

			$('farefinder_tabbody_'+tab_name).addClassName('ff_active');

			$$('.farefinder_tabbody[id!=farefinder_tabbody_'+tab_name+']').invoke('removeClassName','ff_active');

		}

		Event.observe(window, 'load', function() {

			if ($('buscador de tarifas')) {

				var tbs = $('buscador de tarifas').select('.farefinder_tabbody');

				var maxheight = tbs.map(function(tb) {

					var hidden = !tb.hasClassName('ff_active');

					if(hidden) tb.addClassName('ff_active');

					var h = tb.clientHeight;

					if(hidden) tb.removeClassName('ff_active');

					return h;

				}).max()-25;

				if (Prototype.Browser.IE && (parseInt(navigator.userAgent.substring(navigator.userAgent.indexOf("MSIE")+5)) == 6)) {

					tbs.invoke('setStyle', {'height': maxheight+'px'});

				} else {

					tbs.invoke('setStyle', {'minHeight': maxheight+'px'});

				}

			}

		});