<!-- Begin
var xPos = document.body.clientWidth-20;
var yPos = document.body.clientHeight/2;
var step = 1;
var delay = 5; 
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);
}
function pause_resume(pause) {
 if(pause==1) {
  clearInterval(interval);
  pause == 0;
 }else {
  interval = setInterval('changePos()',delay);
 pause ==1;
 }
}
start();
//  End -->