<div id="scrollText">
<h2>連續滾動示例標題</h2>
<p>實例新聞，可以添加任何想要滾動的內容。包括圖片等等。</p>
<p><img src="../../images/logo.gif" alt="連續滾動示例圖片" width="200" height="60" /></p>
<p>……</p>
</div>
<script type="text/javascript">
//添加事件響應函數的函數，與本效果無關
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);
//保存想要滾動的容器
var scrollingBox;
var scrollingInterval;
//用於記錄是否“滾到頭”過一次
var reachedBottom=false;
//記錄第一次滾到頭時候的scrollTop
var bottom;
//初始化滾動效果
function initScrolling(){
scrollingBox = document.getElementById("scrollText");
//樣式設置，與滾動基本無關，應該用CSS設置。
scrollingBox.style.height = "60px";
scrollingBox.style.overflow = "hidden";
//滾動
scrollingInterval = setInterval("scrolling()",50);
//鼠標劃過停止滾動效果
scrollingBox.onmouseover = over;
//鼠標劃出回覆滾動效果
scrollingBox.onmouseout = out;
}
//滾動效果
function scrolling(){
//開始滾動,origin是原來scrollTop
var origin = scrollingBox.scrollTop++;
//如果到頭了
if(origin == scrollingBox.scrollTop){
//如果是第一次到頭
if(!reachedBottom){
scrollingBox.innerHTML+=scrollingBox.innerHTML;
reachedBottom=true;
bottom=origin;
}else{
//已經到頭過，只需回覆頭接尾的效果
scrollingBox.scrollTop=bottom;
}
}
}
function over(){
clearInterval(scrollingInterval);
}
function out(){
scrollingInterval = setInterval("scrolling()",50);
}
</script>
