怎么样给一个input按钮指定一张背景图片？
如题！谢谢

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type= "img " src= "图片地址 "
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type= "image "
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以图片方式提交:
<form method=post name= "myform " action= "action.php>
<input type= "hidden " name= "submit " value= "mysubmit ">
<input type= "image " border= "0 " name= "submit " value= "mysubmit " src= "submit.gif ">
</form>