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

	$$('.popup').each(function(popup) {
		popup.addEvent('click', function(e) {
			e.stop();
			var par = this.getProperty('href');
			var dim = 'height=400,width=570';
			if(par == 'credits.html')
				var dim = 'height=230,width=270';
			window.open(par, '','toolbar=no,'+dim+',menubar=no,directories=no,location=no,scrollbars=yes,status=no,resizable=yes');
		});
	});
});