[url=#] <img src="1.jpg" width="280" height="280" border="0">
</a>
</DIV>
<SCRIPT>
var xPos = 0;
var yPos = 0;
var step = 3;
var delay = 100;
var height = 0;
var Hoffset = 0;
var Woffset = 0;
var yon = 0;
var xon = 0;
var pause = true;
var interval;
img1.style.top = yPos;
function changePos()
{
width = document.body.clientWidth; //获取浏览器的宽度
height = document.body.clientHeight; //获取浏览器的高度
Hoffset = img1.offsetHeight;
Woffset = img1.offsetWidth;
img1.style.left = xPos + document.body.scrollLeft;
img1.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()
{
img1.visibility = "visible";
interval = setInterval('changePos()', delay);
//interval = setTimeout("changePos()", delay);
}
function pause_resume()
{
if(pause)
{
clearInterval(interval);
pause = false;}
else
{
interval = setInterval('changePos()',delay);
pause = true;
}
}
start();
</SCRIPT>
</body>
</html>
JS实现气泡从水中急速上升效果
<html>
<head>
<title>JS实现气泡从水中急速上升效果</title>
<style type="text/css">
body {cursor:crosshair;margin:0; padding:0; position:absolute; overflow:hidden; background:#FFF; left:0; top:0; width:100%; height:100%;}
</style>
<script type="text/javascript">
var object = new Array();
nbfm = 60;
var xm = 0;
var ym = 9999;
var nx = 0;
var ny = 0;
function movbulb(){
with (this) {
if(ec < 20){
if(Math.abs(x0 - xm) < 100 && Math.abs(y0 - ym) < 100){
xx = (xm - x0) / 8;
yy = (ym - y0) / 8;
ec++;
}
}
xx *= 0.99;
yy *= 0.99;
x0 = Math.round(x0 + Math.cos(y0 / 15) * p) + xx;
y0+= yy - v;
if(y0 < -h * 2 || x0 < -w * 2 || x0 > nx + w * 2){
y0 = ny + N + h * 2;
x0 = nx/2-100 + Math.random() * 100;
ec = 0;
}
obj.style.top = y0 - h;
obj.style.left = x0 - w;
}
}
function CObj(N,img,w,h){
this.obj = document.createElement("img");
this.obj.src = img.src;
this.obj.style.position = "absolute";
this.obj.style.left = -1000;
document.body.appendChild(this.obj);
this.N = N;
this.x0 = 0;
this.y0 = -1000;
this.v = 1 + Math.round((80 / h) * Math.random());
this.p = 1 + Math.round((w / 8) * Math.random());
this.xx = 0;
this.yy = 0;
this.ec = 0;
this.w = w;
this.h = h;
this.movbulb = movbulb;
}
function resize(){
nx = document.body.offsetWidth;
ny = document.body.offsetHeight;
}
onresize = resize;
document.onmousemove = function(e){
if (window.event) e = window.event;
xm = document.body.scrollLeft+(e.x || e.clientX);
ym = document.body.scrollTop+(e.y || e.clientY);
}
function run(){
for(i in object)object[i].movbulb();
setTimeout(run, 16);
}
onload = function() {
PIC = document.getElementById("bubbles").getElementsByTagName("img");
resize();
for(nbf=0;nbf<nbfm;nbf++){
sf = PIC[nbf%PIC.length];
object[nbf] = new CObj(nbf,sf,sf.width/2,sf.height/2);
}
run();
}
</script>
</head>
<body>
<div id="bubbles" style="visibility:hidden">
<img src="smile.gif">
<img src="biggrin.gif">
<img src="eek.gif">
<img src="rolleyes.gif">
</div>
</body>
</html>
浮动广告
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>浮动广告</title>
</head>
<body style="background-color:pink">
<div id="ad" style="position:absolute">
<a href=http://www.baidu.com target="_blank">
<img src="2.gif" border="0" width="120" heigth="80">
<input type="button" value="关闭窗口" onclick="closeWindow()"/><!-- 适用于IE浏览器 -->
</a>
</div>
<script type="text/javascript">
var x = 400,y = 300
var xin = true, yin = true
var step = 1
var delay = 25
var obj=document.getElementById("ad")
function floatAD()
{
var L=T=0
var R= document.body.clientWidth-obj.offsetWidth
var B = document.body.clientHeight-obj.offsetHeight
obj.style.left = x + document.body.scrollLeft
obj.style.top = y + document.body.scrollTop
x = x + step*(xin?1:-1)
if (x < L) { xin = true; x = L}
if (x > R){ xin = false; x = R}
y = y + step*(yin?1:-1)
if (y < T) { yin = true; y = T }
if (y > B) { yin = false; y = B }
}
var itl= setInterval("floatAD()", delay)
function closeWindow()
{
window.close();
}
</script>
<style type="text/css">
input{
background-image:url(638.jpg);
border:0px;
margin:0px;
padding:0px;
height:23px;
width:82px;
font-size:14px;
}
</style>
</body>
</html>
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