<div class="container">
         
            <section class="main clearfix">
                <select id="cd-dropdown" name="cd-dropdown" class="cd-select">
                    <option value="http://www.mamicode.com/-1" selected>请选择</option>
                    <option value="http://www.mamicode.com/1" class="icon-monkey">网站模板</option>
                    <option value="http://www.mamicode.com/2" class="icon-bear">jQuery特效</option>
                    <option value="http://www.mamicode.com/3" class="icon-squirrel">精选网址</option>
                    <option value="http://www.mamicode.com/4" class="icon-elephant">网站源码</option>
                </select>
            </section>
        </div><!-- /container -->
        <script src="http://libs.baidu.com/jquery/1.8.3/jquery.min.js"></script>
        <script type="text/javascript" src="http://www.mamicode.com/js/jquery.dropdown.js"></script>
        <script type="text/javascript">
            $(function() {
                $(‘#cd-dropdown‘).dropdown({
                    gutter: 5
                });
            });
        </script>