کد HTML:
<SCRIPT language=JavaScript>
<!-- Begin
<!-- Explorer -->
var no = 50;
var speed = 2;
var ns4up = (document.layers) ? 1 : 0;
var ie4up = (document.all) ? 1 : 0;
var s, x, y, sn, cs;
var a, r, cx, cy;
var i, doc_width = 800, doc_height = 600;
if (ns4up) {
doc_width = self.innerWidth;
doc_height = self.innerHeight;
}
else
if (ie4up) {
doc_width = document.body.clientWidth;
doc_height = document.body.clientHeight;
}
x = new Array();
y = new Array();
r = new Array();
cx = new Array();
cy = new Array();
s = 8;
for (i = 0; i < no; ++ i) {  
initRain();
if (ns4up) {
if (i == 0) {
document.write("<layer name=\"dot"+ i +"\" left=\"1\" ");
document.write("top=\"1\" visibility=\"show\"><font color=\"blue\">");
document.write(",</font></layer>");
}
else {
document.write("<layer name=\"dot"+ i +"\" left=\"1\" ");
document.write("top=\"1\" visibility=\"show\"><font color=\"blue\">");
document.write(",</font></layer>");
   }
}
else 
if (ie4up) {
if (i == 0) {
document.write("<div id=\"dot"+ i +"\" style=\"POSITION: ");
document.write("absolute; Z-INDEX: "+ i +"; VISIBILITY: ");
document.write("visible; TOP: 15px; LEFT: 15px;\"><font color=\"blue\">");
document.write(",</font></div>");
}
else {
document.write("<div id=\"dot"+ i +"\" style=\"POSITION: ");
document.write("absolute; Z-INDEX: "+ i +"; VISIBILITY: ");
document.write("visible; TOP: 15px; LEFT: 15px;\"><font color=\"blue\">");
document.write(",</font></div>");
      }
   }
}
function initRain() {
a = 6;
r   91;i   93; = 1;
sn = Math.sin(a);
cs = Math.cos(a);
cx   91;i   93; = Math.random() * doc_width + 1;
cy   91;i   93; = Math.random() * doc_height + 1;
x   91;i   93; = r   91;i   93; * sn + cx   91;i   93;;
y   91;i   93; = cy   91;i   93;;
}
function makeRain() {
r   91;i   93; = 1;
cx   91;i   93; = Math.random() * doc_width + 1;
cy   91;i   93; = 1;
x   91;i   93; = r   91;i   93; * sn + cx   91;i   93;;
y   91;i   93; = r   91;i   93; * cs + cy   91;i   93;;
}
function updateRain() {
r   91;i   93; += s;
x   91;i   93; = r   91;i   93; * sn + cx   91;i   93;;
y   91;i   93; = r   91;i   93; * cs + cy   91;i   93;;
}
function raindropNS() {
for (i = 0; i < no; ++ i) {
updateRain();
if ((x   91;i   93; <= 1) || (x   91;i   93; >= (doc_width - 20)) || (y   91;i   93; >= (doc_height - 20))) {
makeRain();
doc_width = self.innerWidth;
doc_height = self.innerHeight;
}
document.layers   91;"dot"+i   93;.top = y   91;i   93;;
document.layers   91;"dot"+i   93;.left = x   91;i   93;;
}
setTimeout("raindropNS()", speed);
}
function raindropIE() {
for (i = 0; i < no; ++ i) {
updateRain();
if ((x   91;i   93; <= 1) || (x   91;i   93; >= (doc_width - 20)) || (y   91;i   93; >= (doc_height - 20))) {
makeRain();
doc_width = document.body.clientWidth;
doc_height = document.body.clientHeight;
}
document.all   91;"dot"+i   93;.style.pixelTop = y   91;i   93;;
document.all   91;"dot"+i   93;.style.pixelLeft = x   91;i   93;;
}
setTimeout("raindropIE()", speed);
}
if (ns4up) {
raindropNS();
}
else
if (ie4up) {
raindropIE();
}
//  End -->
</SCRIPT>