<style type="text/css">
.b_on{}
.b_off{}
</style>
<script type="text/javascript">
function tabit(tabName, btnId, tabNumber, btnClass) {
for (i = 0; i < tabNumber; i++) {
document.getElementById(tabName + '_div' + i).style.display = 'none';
document.getElementById(tabName + '_btn' + i).className = btnClass + 'off';
}
document.getElementById(tabName + '_div' + btnId).style.display = 'block';
document.getElementById(tabName + '_btn' + btnId).className = btnClass + 'on';
}
</script>
<ul>
<li class="b_on" id="tab_btn0" onclick="tabit('tab',0,3,'b_')">标签1 </li>
<li class="b_off" id="tab_btn1" onclick="tabit('tab',1,3,'b_')">标签2 </li>
<li class="b_off" id="tab_btn2" onclick="tabit('tab',2,3,'b_')">标签3 </li>
</ul>
<div id="tab_div0"></div>
<div id="tab_div1" style="display: none;"></div>
<div id="tab_div2" style="display: none;"></div>
