Уроки Photoshop

<script>  
var no = 1;  
var speed = 299;  
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\"><img src=\"http://gamesmir.com/scripts/tarakan_by_crystall.gif\" width=75 height=56>");  
document.write("</layer>");  
}  
else {  
document.write("<layer name=\"dot"+ i +"\" left=\"1\" ");  
document.write("top=\"1\" visibility=\"show\"><img src=\"http://gamesmir.com/scripts/tarakan_by_crystall.gif\" width=75 height=56></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;\"><img src=\"http://gamesmir.com/scripts/tarakan_by_crystall.gif\" width=75 height=56></div>");  
}  
else {  
document.write("<div id=\"dot"+ i +"\" style=\"POSITION: ");  
document.write("absolute; Z-INDEX: "+ i +"; VISIBILITY: ");  
document.write("visible; TOP: 15px; LEFT: 15px;\"><img src=\"http://gamesmir.com/scripts/tarakan_by_crystall.gif\" width=75 height=56></div>");  
  }  
  }  
}  
function initRain() {  
a = 6;  
r[i] = 1;  
sn = Math.sin(a);  
cs = Math.cos(a);  
cx[i] = Math.random() * doc_width + 1;  
cy[i] = Math.random() * doc_height + 1;  
x[i] = r[i] * sn + cx[i];  
y[i] = cy[i];  
}  
function makeRain() {  
r[i] = 1;  
cx[i] = Math.random() * doc_width + 1;  
cy[i] = 1;  
x[i] = r[i] * sn + cx[i];  
y[i] = r[i] * cs + cy[i];  
}  
function updateRain() {  
r[i] += s;  
x[i] = r[i] * sn + cx[i];  
y[i] = r[i] * cs + cy[i];  
}  
function raindropNS() {  
for (i = 0; i < no; ++ i) {  
updateRain();  
if ((x[i] <= 1) || (x[i] >= (doc_width - 20)) || (y[i] >= (doc_height - 20))) {  
makeRain();  
doc_width = self.innerWidth;  
doc_height = self.innerHeight;  
}  
document.layers["dot"+i].top = y[i];  
document.layers["dot"+i].left = x[i];  
}  
setTimeout("raindropNS()", speed);  
}  
function raindropIE() {  
for (i = 0; i < no; ++ i) {  
updateRain();  
if ((x[i] <= 1) || (x[i] >= (doc_width - 20)) || (y[i] >= (doc_height - 20))) {  
makeRain();  
doc_width = document.body.clientWidth;  
doc_height = document.body.clientHeight;  
}  
document.all["dot"+i].style.pixelTop = y[i];  
document.all["dot"+i].style.pixelLeft = x[i];  
}  
setTimeout("raindropIE()", speed);  
}  
if (ns4up) {  
raindropNS();  
}  
else  
if (ie4up) {  
raindropIE();  
}  
</script>