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??????????JS???
<script language="javascript"> function changeImg(obImg,sNewURL) { if(sNewURL!="") obImg.src=sNewURL; } </script>
???????????????????????????"????"?????????????????<img style="cursor:hand;" src="????" border="0" width="50" height="30" onmouseover="changeImg(this,'????');" onmouseout="changeImg(this,'????');">
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