div小型浮动层，类似锚点提示文字，鼠标点击按钮显示/隐藏

<script type="text/javascript">

function switcher(){

$('#switcher').toggle();

}

</script>

<style type="text/css">

<!--

.switcher{

padding:5px;

display:none;

position:absolute;

top:0px;

left:0px;

background:white;

border:1px black solid;

}

-->

</style>

<span style="white-space:nowrap">

[<a title="点击显示/关闭" href="javascript:" onclick="switcher()">切换权限</a>]

<div style="position:relative;">

<div id='switcher' class="switcher">

123123123

test text

</div>

</div>

</span>