代码如下：
<form name="myform"> <select name="select" size="1" onchange="location=this.options[this.selectedIndex].value"> <option value="目录">目 录 </option> <option value="../index001.htm">Frontpage/option> <option value="../index002.htm">Photoshop</option> <option value="../index003.htm">Javascript</option> <option value="../index005.htm">HTML</option> <option value="../index006.htm">Flash</option> </select> </form>