<script type="text/javascript">
//添加事件响应函数的函数，与本效果无关
function addEventSimple(obj,evt,fn){
if(obj.addEventListener){
obj.addEventListener(evt,fn,false);
}else if(obj.attachEvent){
obj.attachEvent('on'+evt,fn);
}
}
addEventSimple(window,'load',initScrolling);
//保存想要滚动的容器
var scrollingBox;
var scrollingInterval;
//用于记录是否“滚到头”过一次
var reachedBottom=false;
//记录第一次滚到头时候的scrollTop
var bottom;
//初始化滚动效果
function initScrolling(){
scrollingBox = document.getElementById("scrollText");
//样式设置，与滚动基本无关，应该用CSS设置。
scrollingBox.style.height = "60px";
scrollingBox.style.overflow = "hidden";
//滚动
scrollingInterval = setInterval("scrolling()",50);
//鼠标划过停止滚动效果
scrollingBox.onmouseover = over;
//鼠标划出回复滚动效果
scrollingBox.onmouseout = out;
}
//滚动效果
function scrolling(){
//开始滚动,origin是原来scrollTop
var origin = scrollingBox.scrollTop++;
//如果到头了
if(origin == scrollingBox.scrollTop){
//如果是第一次到头
if(!reachedBottom){
scrollingBox.innerHTML+=scrollingBox.innerHTML;
reachedBottom=true;
bottom=origin;
}else{
//已经到头过，只需回复头接尾的效果
scrollingBox.scrollTop=bottom;
}
}
}
function over(){
clearInterval(scrollingInterval);
}
function out(){
scrollingInterval = setInterval("scrolling()",50);
}
</script>
<div id="scrollText">
<h2>连续滚动示例标题</h2>
<p>实例新闻，可以添加任何想要滚动的内容。包括图片等等。</p>
<p><img src="http://www.xxx.com/images/logo.gif" alt="连续滚动示例图片" /></p>
<p><img src="http://www.xxx.com/images/logo.gif" alt="连续滚动示例图片" /></p>
<p>……</p>
</div>