<html>
<head>
<SCRIPT language=javascript>
function checkThis(obj){
var select1=document.getElementById("select1");
var op=new Option(obj.value,obj.value);
select1.add(op);
}
function addOption(){
}
function deleteOption(){
}
</SCRIPT>
</head>
<body>
<table>
<tr>
<td><input type="radio" value="0"onclick="checkAll()"></input></td>
<td>部门名称</td>
<td>负责人</td>
</tr>
<tr>
<td><input type="radio" value="0001"onclick="checkThis(this)"></input></td>
<td>0001</td>
<td>刘某</td>
</tr>
<tr>
<td><input type="button" value="添加"onclick="addOption()"></input></td>
<td><input type="button" value="删除"onclick="deleteOption()"></input></td>
</tr>
</table>
<select id="select1">
</select>
</body>
</html>
不知道你的按钮是否有用,现在这个是点击单选框就增加到select中。