下拉菜单问题，

Question

<select name="formselect1" size="1" onchange="window.location=this.value">
    <option value="www.163.com">www.163.com</option>
    <option value="www.cctv.com">www.cctv.com</option>
</select>

Answer 1

<select name="formselect1" size="1" onchange="window.location.herf=this.value">
    <option value="www.163.com">www.163.com</option>
    <option value="www.cctv.com">www.cctv.com</option>
    </select>