怎样在html中把BUTTON换成图标

<input type=“button" name="button" value=" " style="backgroung-image:url(“图标路径”);" />

<td width="100" onclick="viewMonitorData()">
<a class="Operation"><img class="img_s" src="<%=frameroot%>/images/chakangif" width="15" height="15" alt=""> 查看 </a>
</td>

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