是这样子吗?<input type="button" onclick="tr1.style.display='none'"
value="Hidden">
<table>
<tr><td>灰豆宝宝.net</td></tr>
<tr id="tr1"><td>wanghr100</td></tr>
</table>
value="Hidden">
<table>
<tr><td>灰豆宝宝.net</td></tr>
<tr id="tr1"><td>wanghr100</td></tr>
</table>
<td width="36%"><input type="button" name="dr" value="导入数据文件" onClick="xml('xml')"></td><table width="100%" style="display:none " id = "xml">
<tr>
<td width="20%"> </td>
<td width="30%"> <input type="file" name="wenjian"></td>
<td width="20%"> </td>
</tr>
</table><script language = "javascript">
function xml(obj){
if(document.all(obj).style.display=="none"){
document.all(obj).style.display=""; }else{
document.all(obj).style.display="none"; }
}
</script>
试试看
不行再找我