Bouncing Image

Posted: December 18, 2007 in JavaScript Stuffs

Heading Bouncing Image

Description JavaScript “Bouncing Image”

Preview N/A

Code

<!DOCTYPE HTML PUBLIC “-//W3C//DTD HTML 3.2 Final//EN”>
<HTML>
<HEAD>
<META NAME=”Generator” CONTENT=”TextPad 4.4″>
<LINK href=”general.css” rel=”stylesheet” type=”text/css”>

</HEAD>

<BODY Background=../graphics/grayback.jpg>
<center><BR><BR><BR>
<div id=”img” style=”position:absolute;”>
<img src=”ball.gif” onMouseDown=”pauseResume();”>
</div>

<SCRIPT LANGUAGE=”JavaScript”>
<!– Original:  Justin Arruda (JArruda@mindspring.com) –>

<!– Begin
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;
var name = navigator.appName;
if(name == “Microsoft Internet Explorer”) name = true;
else name = false;
var xPos = 20;
if(name) var yPos = document.body.clientHeight;
else var yPos = window.innerHeight;
function changePos() {
if(name) {
width = document.body.clientWidth;
height = document.body.clientHeight;
Hoffset = img.offsetHeight;
Woffset = img.offsetWidth;
img.style.left = xPos + document.body.scrollLeft;
img.style.top = yPos + document.body.scrollTop;
}
else {
height = window.innerHeight;
width = window.innerWidth;
Hoffset = document.img.clip.height;
Woffset = document.img.clip.width;
document.img.pageY = yPos + window.pageYOffset;
document.img.pageX = xPos + window.pageXOffset;
}
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() {
if(name) img.visibility = “visible”;
else document.img.visibility = “visible”;
interval = setInterval(‘changePos()’,delay);
}
function pauseResume() {
if(pause) {
clearInterval(interval);
pause = false;
}
else {
interval = setInterval(‘changePos()’,delay);
pause = true;
}
}
start();
//  End –>
</script>

</center>
</BODY>
</HTML>

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