漂浮图片

<SCRIPT language=JavaScript>
<!--
document.write("<div id='img' style='POSITION:absolute;z-index:20; right: 20px; top:3px><table border='0'width='200'><tr><tdalign='center'><a href='图片链接'target=_blank><img src='图片路径'border='0'></a></td></tr></table></div>")
window.onload=img;
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();
// -->

</SCRIPT>