63.html

来自「javescript网页特效80个例子」· HTML 代码 · 共 43 行

HTML
43
字号
<html>
<head>
<title>反复自动滚屏</title>
<script language="JavaScript">
var currentpos=0,alt=1,curpos1=0,curpos2=-1
function initialize(){
startit()
}
function scrollwindow(){
if (document.all)
temp=document.body.scrollTop
else
temp=window.pageYOffset
if (alt==0)
alt=1
else
alt=0
if (alt==0)
curpos1=temp
else
curpos2=temp
if (curpos1!=curpos2){
if (document.all)
currentpos=document.body.scrollTop+1
else
currentpos=window.pageYOffset+1
window.scroll(0,currentpos)
}
else{
currentpos=0
window.scroll(0,currentpos)
}
}
function startit(){
setInterval("scrollwindow()",30)  //设置滚屏速度
}
window.onload=initialize
</script>
</head>
<body>
<img src=01.jpg><br>
</body>
</html>

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