图片在显示一定的时间后消失

将以下代码加到〈body〉与〈/body〉之间
<SCRIPT language=">http://blog.163.com/ytnsh003"
// 4) 设置ALT属性。
var alttext="150M空间80元.国际域名50元,国内80"
// 5) 设置下列属性为 1或者0(1是IE特有的，使LOGO隐现）
var fadeintoview=1

var visibleduration=10

function regenerate(){
window.location.reload()
}
function regenerate2(){
if (document.layers)
setTimeout("window.onresize=regenerate",400)
}
var fadeset=''
if (fadeintoview)
fadeset="filter:alpha(opacity=0)"
if (document.all)
document.write('<span " style="'+fadeset+';;top:100;width:'+staticlogo.width+';height:'+staticlogo.height+'"></span>')
function bringintoview(){
if (logo.filters.alpha.opacity<=95)
logo.filters.alpha.opacity+=5
else{
clearInterval(viewit)
if (visibleduration!=0)
setTimeout("logo.style.visibility='hidden'",visibleduration*1000)
}
}
function createlogo(){
staticimage=new Layer(100)
staticimage.left=-300
staticimage.top=120
staticimage.document.write('<a href="'+logolink+'"><img src="'+staticlogo.src+'" border=0 alt="'+alttext+'"></a>')
staticimage.document.close()
staticimage.visibility="show"
regenerate2()
staticitns()
}
if (document.layers)
window.onload=createlogo;
if (document.all){
w=2
h=2
logo.style.left=w
logo.style.top=h
}
function logoit(){
var w2=document.body.scrollLeft+w
var h2=document.body.scrollTop+h
logo.style.left=w2
logo.style.top=h2
}
function logoit2(){
staticimage.left=pageXOffset+2
staticimage.top=pageYOffset+2
}
function insertimage(){
logo.innerHTML='<a href="'+logolink+'"><img src="'+staticlogo.src+'" border=0 alt="'+alttext+'"></a>'
if (fadeintoview)
viewit=setInterval("bringintoview()",100)
else{
if (visibleduration!=0)
setTimeout("logo.style.visibility='hidden'",visibleduration*1000)
}
}
if (document.all){
window.onscroll=logoit
window.onresize=new Function("window.location.reload()")
window.onload=insertimage
}
function staticitns(){
setInterval("logoit2()",90)
if (visibleduration!=0)
setTimeout("staticimage.visibility='hide'",visibleduration*1000)
}
//-->
</SCRIPT>