使用js实现内容可互换式菜单

<SCRIPT LANGUAGE="JavaScript">

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<form ACTION="" METHOD="POST">

<table border="0">

<tr>

<td><select multiple size="8" name="list1">

<option value="l1">数学系</option>

<option value="l2">英语系</option>

<option value="l3">物理系</option>

<option value="l4">日语系</option>

</select></td>

<td>

<input type="button" value="添加" onclick="move(this.form.list1,this.form.list2)" name="B1"><br>

<input type="button" value="删除" onclick="move(this.form.list2,this.form.list1)" name="B2">

</td>

<td><select multiple size="8" name="list2">

<option value="r1">自动化系</option>

<option value="r2">电子工程系</option>

<option value="r3">信息管理系</option>

<option value="r4">计算机系</option>

</select></td>

</tr>

</table>

</form>