怎么在li的上方加一个图片? 不是上在li里面,是上方不然会把li给撑大,类似这种效果
<ul class="nav nav-tabs" role="tablist" id="maintab">
<li class="active"><a href="#main_tab1" onclick='showPage("main_tab1","trainee-info.htm")'> ABOUT</a></li>
<li><a href="#main_tab2" onclick='showPage("main_tab2","sfunction-calendar.htm")'> #springMessage("sub-menu-tfunction-calendar")</a></li>
<li><a href="#main_tab3" onclick='showPage("main_tab3","sfunction-my-course.htm")'> #springMessage("sub-menu-sfunction-my-course")</a></li>
<li><a href="#main_tab4" onclick='showPage("main_tab4","my-team.htm")'> #springMessage("sub-menu-my-team")</a></li>
</ul>