jQuery简单tab切换效果实现方法

<script src="js/jquery-latest.js"></script><SCRIPT language=javascript type=text/javascript>$(document).ready(function () {$('.tabtitle li').click(function () {var index = $(this).index();$(this).attr('class',"tabhover").siblings('li').attr('class','taba');$('.tabcontent').eq(index).show(200).siblings('.tabcontent').hide();});  var t = 0;  var timer = setInterval(function(){    if( t == $('.tabtitle li').length ) t = 0;    $('.tabtitle li:eq('+t+')').click();    t++;  }, 700)})</SCRIPT><div class="maintab"><ul class="tabtitle"><li class="tabhover"><a href="#">选择标题1</a></li> <li class="taba"><a href="#">选择标题2</a></li> <li class="taba"><a href="#">选择标题3</a></li> <li class="taba"><a href="#">选择标题4</a></li> <li class="taba"><a href="#">选择标题5</a></li></ul><div class="tabcontent">选择内容1</div><div class="tabcontent" style="DISPLAY: none">选择内容2</div><div class="tabcontent" style="DISPLAY: none">选择内容3</div><div class="tabcontent" style="DISPLAY: none">选择内容4</div><div class="tabcontent" style="DISPLAY: none">选择内容5</div></div>