window.addEvent('domready', function() {

	$$('.head_cnt').addEvents({
		'click': function()
		{
			var tab = this.get('rel');
			var parent = this.getParent('.tab_cnt');
			
			$(parent).getElements('.content').setStyle('display', 'none');

			$(parent).getElements('.head_cnt').removeClass('active');
			
			$(parent).getElement('[rel=c'+tab+']').setStyle('display', '');
			this.addClass('active');
		}
	});
		

});