document.observe("dom:loaded", function() {
	var tabs = $$('#tabs li');
	tabs.each(function(object) {
		//alert($$('#tabs li').length);
		$(object.id).observe('click', function() {
			for(var i = 1; i<= tabs.length; i++) {
				if('tab'+i+'_content' != object.id+'_content') {
					$('tab'+i+'_content').setStyle({ display: 'none'});
					$('tab'+i).removeClassName('active');					
				}
			}
			this.addClassName('active');
			$(object.id+'_content').setStyle({ display: 'block'});
		});
	});
});