下拉菜单跳转
<script language="JavaScript">
function MM_o(selObj){
window.open(selObj.options[selObj.selectedIndex].value);
}
</script>
<select name="select" size="1" class="input1" onChange="MM_o(this)">
<option selected>插件下载导航 ---></option>
<option value="./extension/default.asp?classid=1&Nclassid=20">DW插件</option>
<option value="./extension/default.asp?classid=1&Nclassid=21">FW插件</option>
<option value="./extension/default.asp?classid=1&Nclassid=22">FLASH插件</option>
<option value="./extension/default.asp?classid=1&Nclassid=23">PS插件</option>
</select>
