select下拉框选中进弹出新页面

 <select name="select6" style="width: 180px;" onchange="if (this.selectedIndex!=0) window.open(this.value)">
                            <option>--请选择--</option>
                            <option value="http://baidu.com百度</option>
                            <option value="http://google.cn">谷歌</option>
                            <option value="http://cnblogs.com">博客园</option>

                        </select>