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分享请教，javascript与select的问题～～
<td width="552" colspan="2"><select name="type" size="1">
<option value="a">请选考验类型</option>
<option value="0">消息公告</option>
<option value="1">成绩查询</option>
<option value="2">试题下载</option>
</select></td>
我想通过选择试题下载
页面就出现 <td height="55"> <div align="center"><font color="#FF0000"><strong>*</strong></font>上传文件：</div></td>
<td colspan="2"><input type="file" name="upload"></td>
这个怎么实现 多谢～～
<option value="a">请选考验类型</option>
<option value="0">消息公告</option>
<option value="1">成绩查询</option>
<option value="2">试题下载</option>
</select></td>
我想通过选择试题下载
页面就出现 <td height="55"> <div align="center"><font color="#FF0000"><strong>*</strong></font>上传文件：</div></td>
<td colspan="2"><input type="file" name="upload"></td>
这个怎么实现 多谢～～
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ttyp 2004-11-23
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<html>
<head>
<title> New Document </title>
<meta name="Generator" content="EditPlus">
<meta name="Author" content="">
<meta name="Keywords" content="">
<meta name="Description" content="">
<script language="JavaScript">
<!--
function ch(o)
{
if(o.selectedIndex==3)
{
document.all.fupload.style.display = '';
}
else
{
document.all.fupload.style.display = 'none';
}
}
//-->
</script>
</head>
<body>
<table>
<tr>
<td width="552" colspan="2"><select name="type" size="1" onpropertychange="ch(this);">
<option value="a">请选考验类型</option>
<option value="0">消息公告</option>
<option value="1">成绩查询</option>
<option value="2">试题下载</option>
</select></td>
<td height="55"> <div align="center" id ="fupload" style="display:none;"><font color="#FF0000"><strong>*</strong></font>上传文件：<input type="file" name="upload"></div></td>
</tr>
</table>
</body>
</html>
<html>
<head>
<title> New Document </title>
<meta name="Generator" content="EditPlus">
<meta name="Author" content="">
<meta name="Keywords" content="">
<meta name="Description" content="">
<script language="JavaScript">
<!--
function ch(o)
{
if(o.selectedIndex==3)
{
document.all.fupload.style.display = '';
}
else
{
document.all.fupload.style.display = 'none';
}
}
//-->
</script>
</head>
<body>
<table>
<tr>
<td width="552" colspan="2"><select name="type" size="1" onpropertychange="ch(this);">
<option value="a">请选考验类型</option>
<option value="0">消息公告</option>
<option value="1">成绩查询</option>
<option value="2">试题下载</option>
</select></td>
<td height="55"> <div align="center" id ="fupload" style="display:none;"><font color="#FF0000"><strong>*</strong></font>上传文件：<input type="file" name="upload"></div></td>
</tr>
</table>
</body>
</html>
