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function init () {
Advscroll=document.getelementbyid ("Advscroll");
if (Advscroll.currentstyle) {//ie
Advtop=parseint (AdvScroll.currentStyle.top);
}else{
Advtop=parseint (Document.defaultView.getComputedStyle (advscroll,null). top);//firefox
}
}
function Move () {
Advscroll.style.top= (Advtop+parseint (DOCUMENT.DOCUMENTELEMENT.SCROLLTOP)) + "px";
}
Window.onload=init;
Window.onscroll=move;
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<! DOCTYPE HTML PUBLIC "-//W3C//DTD XHTML 1.0 transitional//en" "Http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd
<meta http-equiv= "Content-type" Content= "text/html; Charset=utf-8 "/>
<title> Untitled document </TITLE>
<style type=" Text/css ";
<!--
# Advscroll {
Position:absolute;
left:13px;
top:128px;
Width:109px;
height:122px;
Z-index:1;
}
-->
</style>
<script type= "Text/javascript";
Var advtop;//ad layer initial position
Var Advscroll;
Function init () {
Advscroll=document.getelementbyid ("Advscroll");
if (advscroll.currentstyle) {//ie
Advtop=parseint (advScroll.currentStyle.top);
} else{
Advtop=parseint (Document.defaultView.getComputedStyle (advscroll,null). top);//firefox
}
}
function Move () {
Advscroll.style.top= (Advtop+parseint (DOCUMENT.DOCUMENTELEMENT.SCROLLTOP)) + "px";
}
Window.onload=init;
Window.onscroll=move;
</script>
<body>
<div id= "Advscroll" ></div>
<div id= "Top" ></div>
<div id= "main" ></div>
<div id= "Bottom" ></div>
</body>
HTML images of ads scrolling with the mouse