点击一跟按扭让其它的按扭失效的 JSP + HTML 代码

<html>
<head>
<script language="javascript" type="text/javascript">
function fnenquiriesCosts()
{
    document.getElementById('chooseSalesIndentId').disabled = true;
    document.getElementById('enquiriesCosts').disabled = true;
}
</script> </head>
<body>
<form>
<table>
<tr>
<td>
<input type="button" id="chooseSalesIndentId" value="选择"> </td>
<td>
<input type="button" id="enquiriesCosts" value="查询" onclick="[color=#FF0000]fn[/color]enquiriesCosts()"> </td>
</tr>
</table>
</form>
</body>
</html>