                                                                                                           

<!-- Begin                                                                                                           

var xPos = 20;                                                                                                           

var yPos = document.body.clientHeight;                                                                                                           

var step = 1;                                                                                                           

var delay = 40;                                                                                                            

var height = 0;                                                                                                          

var Hoffset = 0;                                                                                                          

var Woffset = 0;                                                                                                          

var yon = 0;                                                                                                          

var xon = 0;                                                                                                           

var pause = true;                                                                                                           

var interval;                                                                                       

img.style.top = yPos;                                                                                                           

function changePos() {                                                                                                           

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;                                                                                                           

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() {                                                                                                           

img.visibility = "visible";                                                                                                           

interval = setInterval('changePos()', delay);                                                                                                           

}                                                                                                           

start();                                                                                                           

//  End -->                                                                                                           

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