js实现图层区域内的文字不停向上滚动显示效果，根据自己的网站需求可以自定义文字内容及滚动速度。
<STYLE type=text/css>
#divASContainer {
CLIP: rect(0px 320px 120px 0px); HEIGHT: 120px; LEFT: 10px; OVERFLOW: hidden; POSITION: absolute; TOP: 10px; VISIBILITY: hidden; WIDTH: 250px
}
#divASContent {
LEFT: 0px; POSITION: absolute; TOP: 0px
}
BODY {
FONT: 11px Tahoma, Arial, Helvetica, sans-serif
}
DIV {
FONT: 11px Tahoma, Arial, Helvetica, sans-serif
}
</STYLE>
<SCRIPT language=JavaScript>
// begin absolutely positioned scrollable area object scripts
function verifyCompatibleBrowser(){
this.ver=navigator.appVersion
this.dom=document.getElementById?1:0
this.ie5=(this.ver.indexOf("MSIE 5")>-1 && this.dom)?1:0;
this.ie4=(document.all && !this.dom)?1:0;
this.ns5=(this.dom && parseInt(this.ver) >= 5) ?1:0;
this.ns4=(document.layers && !this.dom)?1:0;
this.bw=(this.ie5 || this.ie4 || this.ns4 || this.ns5)
return this
}
bw=new verifyCompatibleBrowser()
lstart=120
loop=true
speed=50
pr_step=3
function ConstructObject(obj,nest){
nest=(!nest) ? '':'document.'+nest+'.'
this.el=bw.dom?document.getElementById(obj):bw.ie4?document.all[obj]:bw.ns4?eval(nest+'document.'+obj):0;
this.css=bw.dom?document.getElementById(obj).style:bw.ie4?document.all[obj].style:bw.ns4?eval(nest+'document.'+obj):0;
this.scrollHeight=bw.ns4?this.css.document.height:this.el.offsetHeight
this.newsScroll=newsScroll;
this.moveIt=b_moveIt; this.x; this.y;
this.obj = obj + "Object"
eval(this.obj + "=this")
return this
}//武鸣人网站https://www.wuming.ren 网站很好记住，wuming.ren(武鸣拼音.ren域名后缀)
function b_moveIt(x,y){
this.x=x;this.y=y
this.css.left=this.x
this.css.top=this.y
}
//Makes the object scroll up
function newsScroll(speed){
if(this.y>-this.scrollHeight){
this.moveIt(0,this.y-pr_step)
setTimeout(this.obj+".newsScroll("+speed+")",speed)
}else if(loop) {
this.moveIt(0,lstart)
eval(this.obj+".newsScroll("+speed+")")
}
}//武鸣人网站https://www.wuming.ren 网站很好记住，wuming.ren(武鸣拼音.ren域名后缀)
//Makes the object
function InitialiseAutoScrollArea(){
objContainer=new ConstructObject('divASContainer')
objContent=new ConstructObject('divASContent','divASContainer')
objContent.moveIt(0,lstart)
objContainer.css.visibility='visible'
objContent.newsScroll(speed)
}
// end absolutely positioned scrollable area object scripts
</SCRIPT>
<body bgcolor="#fef4d9" onload=InitialiseAutoScrollArea()>
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<DIV id=divASContainer>
<DIV id=divASContent><B>曾经有一份真挚的感情摆在我面前，我没有珍惜</B>
直到失去了以后才后悔莫及。尘世间最痛苦的事没过于此。
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</DIV>
</DIV>
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