急用!请各位高手帮忙!

[wubaiyong]

请问怎样设置下拉菜单可以同时选择多项,谢谢!

[750906]

<form name="form1" method="post" action="">
<select name="select" size="4">
<option value="2">2</option>
<option value="3">3</option>
</select>
</form>

[750906]

<form name="form1" method="post" action="">
<select name="select" size="4" multiple>
<option value="2">2</option>
<option value="3">3</option>
</select>
</form>