document.write("<DIV id=img style=\"HEIGHT: 120px; POSITION: absolute; WIDTH: 120px\"></DIV>");
		var xPos = 20;
		var yPos = document.body.clientHeight;
		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;
		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();