6-20.htm

来自「JavaScript网页特效实例大全」· HTM 代码 · 共 24 行

<style type="text/css">
#floater {
position: absolute;
}</style>
<div ID="floater" style="left:10px; top:10px">
<img SRC="logo1.gif" border="0">
</div>
<script LANGUAGE="JavaScript">
whichIt = null;
 lastScrollY = 0;
function heartBeat() {
 { diffY = document.body.scrollTop; }
if(diffY != lastScrollY) {
percent = .1 * (diffY - lastScrollY);
if(percent > 0) percent = Math.ceil(percent);
else percent = Math.floor(percent);
 document.all.floater.style.pixelTop += percent;
lastScrollY = lastScrollY + percent;
}
}
action = window.setInterval("heartBeat()",1);
</script>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
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