html下拉列表并设置其不能输入

1、通过属性设置

<select name="11" id="11" disabled=true >  
   <option value="1">18-21</option> 
   <option value="2">22-25</option>
   <option value="3">26-29</option>
   <option value="4">30-35</option>
   <option value="5">Over35</option> 
</select>  

 

2、通过事件

<select  name="11" id="11" 
        onbeforeactivate="return false" 
        onfocus="this.blur()"
        onmouseover="this.setCapture()"
        onmouseout="this.releaseCapture()"> 
   <option value="1">18-21</option> 
   <option value="2">22-25</option>
   <option value="3">26-29</option>
   <option value="4">30-35</option>
   <option value="5">Over35</option> 
</select>