收藏一段很好的代码

display: block;

background: url(http://pics.taobao.com/2k5/sys/component/tab_selected_right_bk2.gif) no-repeat right -29px;

padding: 0 15px 0 15px;

}

#container #title #tag1 a:hover {

text-decoration: none;

color: #ffffff;

display: block;

width: auto;

background: url(http://pics.taobao.com/2k5/sys/component/tab_selected_left_bk2.gif) no-repeat left -87px;

}

#container #title #tag1 a:hover span{

display: block;

background: url(http://pics.taobao.com/2k5/sys/component/tab_selected_right_bk2.gif) no-repeat right -87px;

padding: 0 15px 0 15px;

}

#container #title #tag2 a:hover {

text-decoration: none;

color: #ffffff;

display: block;

width: auto;

background: url(http://pics.taobao.com/2k5/sys/component/tab_selected_left_bk2.gif) no-repeat left 0px;

}

#container #title #tag2 a:hover span{

display: block;

background: url(http://pics.taobao.com/2k5/sys/component/tab_selected_right_bk2.gif) no-repeat right 0px;

padding: 0 15px 0 15px;

}

#container #title #tag3 a:hover {

text-decoration: none;

color: #ffffff;

display: block;

width: auto;

background: url(http://pics.taobao.com/2k5/sys/component/tab_selected_left_bk2.gif) no-repeat left -58px;

}

#container #title #tag3 a:hover span{

display: block;