无间隔滚动公告

<BODY>
<div id="marquees">
   <a href="javascript:">1,你可曾有过无数的梦想，</a><br>
   <br>
   <a href="javascript:">2,却在时光的流逝里幻灭 </a><br>
   <br>
   <a href="javascript:">3,你可曾对未来期待憧憬，</a><br>
   <br>
   <a href="javascript:">4,却在成长的岁月中迷失</a><br>
   <br>
</div> 
<script language="JavaScript">

marqueesHeight=190;
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()",50);//越大越慢
}
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>
</BODY>
posted @ 2007-11-18 10:39  blueKnight  Views(448)  Comments(1)  Edit  收藏  举报