腳本說明：
把如下代碼加入區(qū)域中:
<script language="JavaScript"></script>
<script language="JavaScript"></script>
<script language="JavaScript"></script>
<script language="JavaScript"></script>
<script>function BgButton(){
if (document.bgColor=='#00ffff')
{document.bgColor='#ffffff';}
else{document.bgColor='#00ffff';}
}
</script>
<script language="JavaScript"></script>
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