点击按钮显示隐藏div

//测试点击按钮div出现，再次点击div关闭

<script type="text/javascript">

function ClickMenu(diving) {

//alert(diving);

if (document.getElementById(diving).style.display == "none") {

document.getElementById(diving).style.display = 'block';

}

else {

document.getElementById(diving).style.display = 'none';

}

}

</script>

<div class='banner2'>

<img src='images/plus.gif' height='15' width='15' border='0' alt='' />

<a οnclick="ClickMenu('TreeNode0')">分行管理</a>

</div>

<div id='TreeNode0' class='bannermid' style='display:none'>"

<div class='banner3'>

级东南风不可当老板

</div>

</div>