如不能顯示語法效果可貼去本站語法測試板試看
http://www.bunbunhk.com/GIF/01/03.gif <<<背景圖網址，可更改
var speed = 0; <<< 0是移動速度，數目越大越慢，可更改
<script language="Javascript">
<!--
var background = "http://www.bunbunhk.com/GIF/01/03.gif";
var speed = 0;
browserName = navigator.appName;
browserVer = parseInt(navigator.appVersion);
if (browserName != "Netscape" || browserVer >= 4.5) {
function moveback(movert,movedn,hPos,vPos) {
if (arguments[4])
document.body.style.backgroundImage = "url(\"" + arguments[4] + "\")";
if (arguments[5])
document.body.style.backgroundRepeat = arguments[5]
if (!isNaN(hPos)) {
if ((movert!=0) && (hPos>0)) hPos=-100000
hPos += movert
}
if (!isNaN(vPos)) {
if ((movedn!=0) && (vPos>0)) vPos=-100000
vPos+= movedn
}
document.body.style.backgroundPosition= hPos + " " + vPos
if (isNaN(hPos)) hPos = "\"" + hPos + "\""
if (isNaN(vPos)) vPos = "\"" + vPos + "\""
setTimeout("moveback("+movert+","+movedn+","+hPos+","+vPos+")",speed)
}
moveback(1,1,0,0, background);
}
-->
</script>
