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<FORM name=form action="" method=post encType=multipart/form-data>
<INPUT onpropertychange=document.all.aaaa.src=this.value type=file name=upload>
<BR>宽:<INPUT name=W>
高:<INPUT name=H>
<BR>
<INPUT type=submit value=提交>
<IMG style="POSITION: absolute; TOP: -100000px" onerror='alert("类型错误或者目标不存在");' onload={document.all.W.value=this.width;document.all.H.value=this.height;} name=aaaa>
</FORM>
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