[Code]<FORM>
<SELECT onchange="document.getElementById(‘font’).src=this.value;">
<OPTION VALUE="http://www.163.com">163
<OPTION VALUE="http://www.xiaoyebailong.com">博客
<OPTION VALUE="http://www.xuyuanqiang.cn">许愿墙
<OPTION VALUE="http://www.3zha.com">山楂
</SELECT>
</FORM>
<iframe id="font" name="font" src="http://www.xiaoyebailong.com" width="80%" height="500"></iframe>[/Code]
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