上下连续滚动文字

 

    <div id="demo" style="overflow:hidden;height:100%;width:170;font-size:12px;line-height:25px;">
    <div id="demo1">
    <font color="#000000">
    欢迎使用-长江房中介信息系统<br/>
    长江房中介信息系统-版本:1.0<br/>
    设计开发:IDEA1 STUDIO.net<br/>
    </font>
    </div>
    <div id="demo2"></div>
    </div>
    <script type="text/javascript">
    var speed=50
    demo2.innerHTML=demo1.innerHTML
    function Marquee(){
    if(demo2.offsetTop-demo.scrollTop<=0)
    demo.scrollTop-=demo1.offsetHeight
    else{
    demo.scrollTop++
    }
    }
    var MyMar=setInterval(Marquee,speed)
    demo.onmouseover=function() {clearInterval(MyMar)}
    demo.onmouseout=function() {MyMar=setInterval(Marquee,speed)}
    </script>