s2.add(2000,function(){

 g('zongzi').className = 'zongzi zongzi-out';

 g('zongzirou').className = 'zongzirou zongzirou-in'; 

 g('zuoye').className = 'zuoye zuoye-in';

 g('youye').className = 'youye youye-in';

 })

 s2.add(2500,function(){

 g('zuoye').className = 'zuoye zuoye-in zuoye-out';

 g('youye').className = 'youye youye-in youye-out';

 g('diye').className = 'diye diye-in';

 })