下拉框点击往下拉，整个查询框都在动，粘着鼠标？请求大家帮忙！? 400 报错

下拉框点击往下拉，整个查询框都在动，粘着鼠标？请求大家帮忙！? 400 报错 <div class="frm_label">业务名称:    </div>
            <div id="js_query_ywmc" class="js_selectType dropdown_menu" data-value="${param.serviceId}" style="width:160px;margin-right:4px;">
            <a class="btn dropdown_switch jsDropdownBt"><label class="jsBtLabel">全部</label><i class="arrow"></i></a>
            <ul class="dropdown_data_list jsDropdownList" style="display: none;">
             <li class="dropdown_data_item"> <a class="jsDropdownItem" data-value="" data-name="全部">全部</a> </li>
             <c:forEach var="distr" items="${obj.serlist}">
                 <li class="dropdown_data_item"> <a class="jsDropdownItem" data-value="${distr.serviceId}" data-name="${distr.name}">${distr.name}</a> </li>
            </c:forEach>
            </ul>
           </div>