无缝图片滚动代码--marquee

一则很不错的图片滚动代码：

向右滚动：

<div id=demo style=overflow:hidden;width:200;background:#214984;color:#ffffff>
<table align=left cellpadding=0 cellspace=0 border=0><tr><td id=demo1 valign=top>
<img src="http://www.songzi.org/blog/styles/default/sz_blog.gif">
<img src="http://www.songzi.org/forum/images/powered.gif">
<img src="http://iedoo.net/logo/mylogo.gif"></td>
<td id=demo2 valign=top></td></tr></table></div>
<script>
var speed=30
demo2.innerHTML=demo1.innerHTML
demo.scrollLeft=demo.scrollWidth
function Marquee(){
if(demo.scrollLeft<=0)
demo.scrollLeft+=demo2.offsetWidth
else{
demo.scrollLeft--
}
}
var MyMar=setInterval(Marquee,speed)
demo.onmouseover=function() {clearInterval(MyMar)}
demo.onmouseout=function() {MyMar=setInterval(Marquee,speed)}
</script>

向左滚动：

<div id=demo style=overflow:hidden;width:200;background:#214984;color:#ffffff>
<table align=left cellpadding=0 cellspace=0 border=0><tr><td id=demo1 valign=top>
<img src="http://www.songzi.org/blog/styles/default/sz_blog.gif">
<img src="http://www.songzi.org/forum/images/powered.gif">
<img src="http://iedoo.net/logo/mylogo.gif"></td>
<td id=demo2 valign=top></td></tr></table></div>
<script>
var speed=30
demo2.innerHTML=demo1.innerHTML
demo.scrollLeft=demo.scrollWidth
function Marquee(){
if(demo.scrollLeft<=0)
demo.scrollLeft+=demo2.offsetWidth
else{
demo.scrollLeft++
}
}
var MyMar=setInterval(Marquee,speed)
demo.onmouseover=function() {clearInterval(MyMar)}
demo.onmouseout=function() {MyMar=setInterval(Marquee,speed)}
</script>

向上滚动：

<div id=demo style=overflow:hidden;width:90;background:#214984;color:#ffffff>
<div id=demo1>
<img src="http://www.songzi.org/forum/images/powered.gif">
<img src="http://www.songzi.org/blog/styles/default/sz_blog.gif">
<img src="http://iedoo.net/logo/mylogo.gif">
</div>
<div id=demo2></div>
</div>
<script>
var speed=30
demo2.innerHTML=demo1.innerHTML
function Marquee(){
if(demo2.offsetTop-demo.scrollTop<=0)
demo.scrollTop-=demo1.offsetHeight
else{
demo.scrollTop++
}
}
var MyMar=setInterval(Marquee,speed)
demo.onmouseover=function() {clearInterval(MyMar)}
demo.onmouseout=function() {MyMar=setInterval(Marquee,speed)}
</script>

向下滚动：

<div id=demo style=overflow:hidden;width:90;background:#214984;color:#ffffff>
<div id=demo1>
<img src="http://www.songzi.org/forum/images/powered.gif">
<img src="http://www.songzi.org/blog/styles/default/sz_blog.gif">
<img src="http://iedoo.net/logo/mylogo.gif">
</div>
<div id=demo2></div>
</div>
<script>
var speed=30
demo2.innerHTML=demo1.innerHTML
demo.scrollTop=demo.scrollHeight
function Marquee(){
if(demo1.offsetTop-demo.scrollTop>=0)
demo.scrollTop+=demo2.offsetHeight
else{
demo.scrollTop--
}
}
var MyMar=setInterval(Marquee,speed)
demo.onmouseover=function() {clearInterval(MyMar)}
demo.onmouseout=function() {MyMar=setInterval(Marquee,speed)}
</script>