ASP.NET上传图片时，产生预览

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<td height="30" align="center" valign="middle">图片链接</td>

<td height="35" align="center" valign="middle"><input type="file" name="uploadfile1" runat="server" id="uploadfile1" onpropertychange="document.all.imgID.src='file:///'+this.value"> &nbsp;

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<td height="70" align="center" valign="middle">缩略图</td>

<td height="70" align="center" valign="middle"><img id="imgID" width="82" height="65" border="0" >&nbsp;

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