<div id="img" style="position:absolute;">
<img src="../../bilder/kugel2.gif" onClick="pause_resume();">
</div>

<script language="JavaScript">

<!-- Begin
var xPos = 20;
var yPos = 20;
var step = 1;
var delay = 30;
var height = 0;
var Hoffset = 0;
var Woffset = 0;
var yon = 0;
var xon = 0;
var pause = true;
var interval;
document.getElementById("img1").style.top = yPos;
function changePos() {
width = document.getElementsByTagName("body")[0].clientWidth;
height = document.getElementsByTagName("body")[0].clientHeight;
Hoffset = document.getElementById("img1").offsetHeight;
Woffset = document.getElementById("img1").offsetWidth;
document.getElementById("img1").style.left = xPos + document.getElementsByTagName("body")[0].scrollLeft;
document.getElementById("img1").style.top = yPos + document.getElementsByTagName("body")[0].scrollTop;
if (yon) {
yPos = yPos + step;
}
else {
yPos = yPos - step;
}
if (yPos < 0) {
yon = 1;
yPos = 0;
}
if (yPos >= (height - Hoffset)) {
yon = 0;
yPos = (height - Hoffset);
}
if (xon) {
xPos = xPos + step;
}
else {
xPos = xPos - step;
}
if (xPos < 0) {
xon = 1;
xPos = 0;
}
if (xPos >= (width - Woffset)) {
xon = 0;
xPos = (width - Woffset);
}
}
function start() {
document.getElementById("img1").style.visibility = "visible";
interval = setInterval('changePos()', delay);
}
function pause_resume() {
if(pause) {
clearInterval(interval);
pause = false;
}
else {
interval = setInterval('changePos()',delay);
pause = true;
}
}
start();
// End -->
</script>

Original: Justin Arruda
DOM Kompatibilität by nightfire

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