效果不错，值得学习
[img]http://dl2.iteye.com/upload/attachment/0099/1511/a0cc99e4-eb59-30cb-9630-44b5afc0cf96.jpg[/img]
[img]http://dl2.iteye.com/upload/attachment/0099/1513/bceac5ac-6786-3da9-a458-948c1f84d1c9.jpg[/img]
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