谢谢。
---------------------------------------------------------------
1<script>
2document.write('<DIV id=mov6 style="POSITION: absolute; width: 10px; height: 10px"><OBJECT classid="clsid:D27CDB6E-AE6D-11cf-96B8-444553540000" codebase="http://download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=5,0,0,0" WIDTH=80 HEIGHT=80><PARAM NAME=movie VALUE="http://www.163.net/ad/adv/netcn/netcn_100x100.swf"> <PARAM NAME=quality VALUE=high> <PARAM NAME=bgcolor VALUE=#FFFFFF> <EMBED src="http://www.163.net/ad/adv/netcn/netcn_100x100.swf" quality=high bgcolor=#FFFFFF WIDTH=80 HEIGHT=80 TYPE="application/x-shockwave-flash" PLUGINSPAGE="http://www.macromedia.com/shockwave/download/index.cgi?P1_Prod_Version=ShockwaveFlash"></EMBED></OBJECT><img src="http://bjad.163.net/image.ng/site=www163net&channel=163mainpage&SpaceDesc=mainpage&location=moving2" width="1" height="1" border="0"></DIV>');
3
4var xPos = 250;
5var yPos = document.body.clientHeight;
6var step = 1;
7var delay = 20;
8var height = 0;
9var Hoffset = 0;
10var Woffset = 0;
11var yon = 0;
12var xon = 0;
13var pause = true;
14var interval;
15mov6.style.top = yPos;
16function changePos() {
17width = document.body.clientWidth;
18height = document.body.clientHeight;
19Hoffset = mov6.offsetHeight;
20Woffset = mov6.offsetWidth;
21mov6.style.left = xPos + document.body.scrollLeft;
22mov6.style.top = yPos + document.body.scrollTop;
23if (yon) {
24yPos = yPos + step;
25}
26else {
27yPos = yPos - step;
28}
29if (yPos < 0) {
30yon = 1;
31yPos = 0;
32}
33if (yPos >= (height - Hoffset)) {
34yon = 0;
35yPos = (height - Hoffset);
36}
37if (xon) {
38xPos = xPos + step;
39}
40else {
41xPos = xPos - step;
42}
43if (xPos < 0) {
44xon = 1;
45xPos = 0;
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47if (xPos >= (width - Woffset)) {
48xon = 0;
49xPos = (width - Woffset);
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51}
52function start() {
53mov6.visibility = "visible";
54interval = setInterval('changePos()', delay);
55}
56
57start();
58</script>