日期:2014-05-18 浏览次数:20753 次
<select id=s1> <option >1</option> <option >2</option> <option >3</option> <option >4</option> <option >5</option> <option >6</option> </select> <input type=button id=b1 value=go onclick="aa()"> <script> function aa(){ var f=new ActiveXObject("WScript.SHELL"); s1.focus(); f.SendKeys("%{DOWN}"); } </script>