mouseover时显示滚动字幕 特效

<div id="tooltip2" style="background-color: white; clip: rect(0px 150px 50px 0px); height: 1px; left: 2px; position: absolute; top: 0px; visibility: visible; width: 100px; z-index: 2"><layer name="nstip" width="500px" bgcolor="white"></layer></div>
[ctrl+a 全选 注:如需引入外部js需刷新才能执行]