无间隙文字向上滚动特效-JS特效-爱易网页

无间隙文字向上滚动特效

日期：2014-05-18　浏览次数：20234 次

以下是HTML网页特效代码，点击运行按钮可查看效果：

以下是程序代码

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3c.org/TR/1999/REC-html401-19991224/loose.dtd">
<HTML xmlns="http://www.w3.org/1999/xhtml">
<HEAD>
<TITLE></TITLE>
<META http-equiv=Content-Type content="text/html; charset=gbk">
<style type="text/css">
ul {
 padding-right: 0px;
 padding-left: 0px;
 padding-bottom: 0px;
 margin: 0px;
 padding-top: 0px
}
#announcement {
 width:100%;
 background:url(img/menu_bg.gif) repeat;
 overflow: hidden;
}
#announcement div {
 border: #e6e6e6 1px solid;
 padding:0px 10px 0px 10px;
 overflow-y:hidden;
 line-height: 24px;
 height: 24px
}
#announcement li {
 font-size: 12px;
 float: left;
 list-style-type: none;
 margin-right: 20px;
 padding-left: 10px;
 background: url(img/arrow_right.gif) no-repeat 0px 50%;
 white-space: nowrap
}
#announcement a {
 text-decoration: none;
}
#announcement a:hover {
 text-decoration:underline;
}
</style>
</HEAD>
<BODY>
<DIV id=announcement onMouseOver="if(!anncount) {clearTimeout(annst);annst = 0}" onMouseOut="if(!annst) annst = setTimeout('announcementScroll()', anndelay);">
  <DIV id=announcementbody>
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    </UL>
  </DIV>
</DIV>
<script type="text/javascript">
function $(id)
{
   return document.getElementById(id);
}
var anndelay = 3000;
var anncount = 0;
var annheight = 24;
var annst = 0;
function announcementScroll()
{
   if( ! annst)
   {
      $('announcementbody').innerHTML += '<br style="clear: both" />' + $('announcementbody').innerHTML;
      $('announcementbody').scrollTop = 0;
      if($('announcementbody').scrollHeight > annheight * 3)
      {
         annst = setTimeout('announcementScroll()', anndelay);
      }
      else
      {
         $('announcement').onmouseover = $('announcement').onmouseout = null;
      }
      return;
   }
   if(anncount == annheight)
   {
      if($('announcementbody').scrollHeight - annheight <= $('announcementbody').scrollTop)
      {
         $('announcementbody').scrollTop = $('announcementbody').scrollHeight / 2 - annheight;
      }
      anncount = 0;
      annst = setTimeout('announcementScroll()', anndelay);
   }
   else
   {
      $('announcementbody').scrollTop ++ ;
      anncount ++ ;
      annst = setTimeout('announcementScroll(</div></div>

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