效果:
[img]http://dl.iteye.com/upload/attachment/0080/0708/b352e785-e660-3451-ba08-1997962ac762.jpg[/img]
[img]http://dl.iteye.com/upload/attachment/0080/0710/f6d558fe-d069-3259-858f-9f04ec1ff83c.jpg[/img]