希望博友能帮帮我...万分感谢~有代码最好
http://wenku.baidu.com/link?url=gTwZi0Mko9lWbN83pu3Nny3RCV6E80xdcw2RpQh0TZTi9G0OC1s9iZ7xOfvXVdRCSE9W-PJMMjiHOWWaOVsy1ukiBRsvJu70UioCEws7iVi