jquery用div实现下拉列表的效果

                    <script type="text/javascript">
                        function showSearchList() {
                            if ($('#searchList').is(":visible") == true) {
                                $('#searchList').hide();
                            }
                            else {
                                $('#searchList').show();
                            }
                        }



                        $(function() {
                            $('#serachDiv').blur(function() {   //这句很重要用来实现点击其他地方的时候，隐藏div（触发焦点事件）
                                 $('#searchList').hide();
                            })
                            $('#searchList li').click(function() {
                                $("#searchCategory").html($(this).text());
                                $('#searchList').hide();
                            });
                            $("#hightsearch").click(function() {

                                window.open('/News/ZhengHeGaoJiSearch.aspx');
                            })

                        })
                       
                        function searchClink() {
                            var name = $.trim($("#searchCategory").text());

                            var title = escape($("#searchTitle").val());
                            if (title == '') {
                                alert('关键词不能用空！');
                                return;
                            }
                            var site;
                            switch (name) {
                                case "政务新闻":
                                    site = '999';
                                    break;
                                case "网上办事":
                                    site = '6';
                                    break;
                                case "便民服务":
                                    site = '8';
                                    break;
                                case "政府信息公开":
                                    site = '5';
                                    break;
                                default:
                                    site = '7';
                                    break;
                            }
                            if (site == '6') {
                                var url = '/2010/eService/eServiceItemList.aspx?type=0&title=' + title;
                                window.open(url);
                            }
                            else if (site == '7') {
                                var url = '/AuthorityPublic/AuthorityList.aspx?kw=' + title;
                                window.open(url);
                            }
                            else if (site == '8') {
                                var url = '/2010/Bmfw/SearchResult.aspx?fcheckbox=3&fullname=' + title;
                                window.open(url);
                            }
                            else {
                                var url = '/News/ResultSearch.aspx?searchType=&selectSite=' + site + '&keyword=' + title;
                                window.open(url);
                            }
                        }
                    </script>


                        <div class="selectSearch" id="serachDiv">
                            <h1 onclick="showSearchList()" id="searchCategory">
                                政务新闻</h1>
                            <div class="optionSearch" id="searchList" style="display: none;">
                                <ul>
                                    <li class="bor_top">政务新闻</li>
                                    <li>网上办事</li>
                                    <li>便民服务</li>
                                    <li>政府信息公开</li>
                                    <li>行政职权公开</li>
                                </ul>
                            </div>
                        </div>