无缝向上滚动文字代码（Js+div），可用在公告栏

<div id="marquees">

<a href="#">你可曾有过无数的梦想，</a><br>

<br>

<a href="#">却在时光的流逝里幻灭 </a><br>

<br>

<a href="http://www.wangyeba.com">你可曾对未来期待憧憬，</a><br>

<br>

<a href="#">却在成长的岁月中迷失</a><br>

<br>

</div>

<script language="JavaScript">

marqueesHeight=200;

stopscroll=false;

with(marquees){

style.width=0;

style.height=marqueesHeight;

style.overflowX="visible";

style.overflowY="hidden";

noWrap=true;

onmouseover=new Function("stopscroll=true");

onmouseout=new Function("stopscroll=false");

}

document.write('<div id="templayer" style="position:absolute;z-index:1;visibility:hidden"></div>');

preTop=0; currentTop=0;

function init(){

templayer.innerHTML="";

while(templayer.offsetHeight<marqueesHeight){

templayer.innerHTML+=marquees.innerHTML;

}

marquees.innerHTML=templayer.innerHTML+templayer.innerHTML;

setInterval("scrollUp()",30);

}

document.body.onload=init;

function scrollUp(){

if(stopscroll==true) return;

preTop=marquees.scrollTop;

marquees.scrollTop+=1;

if(preTop==marquees.scrollTop){

marquees.scrollTop=templayer.offsetHeight-marqueesHeight;

marquees.scrollTop+=1;

}

}

</script>