<script>
var no = 5;
// snow number
var speed = 25; // smaller number moves the snow faster
var
snowflake = "vlocka.gif";
var ns4up = (document.layers) ? 1 : 0; //
browser sniffer
var ie4up = (document.all) ? 1 : 0;
var dx, xp, yp; //
coordinate and position variables
var am, stx, sty; // amplitude and step
variables
var i, doc_width = 774, doc_height = 500;
if (ns4up) {
doc_width = self.innerWidth;
doc_height = self.innerHeight;
} else if
(ie4up) {
//doc_width = 500;
//doc_height = 500;
}
dx = new
Array();
xp = new Array();
yp = new Array();
am = new Array();
stx =
new Array();
sty = new Array();
for (i = 0; i < no; ++ i) {
dx[i] = 0; // set coordinate variables
xp[i] =
Math.random()*(doc_width-50); // set position variables
yp[i] =
Math.random()*doc_height;
am[i] = Math.random()*20; // set amplitude
variables
stx[i] = 0.02 + Math.random()/10; // set step variables
sty[i] = 0.7 + Math.random(); // set step variables
if (ns4up) {
// set layers
if (i == 0) {
document.write("<layer name=\"dot"+ i +"\" left=\"15\" ");
document.write("top=\"15\" visibility=\"show\"><img src=\"");
document.write(snowflake + "\" border=\"0\"></layer>");
} else
{
document.write("<layer name=\"dot"+ i +"\" left=\"15\" ");
document.write("top=\"15\" visibility=\"show\"><img src=\"");
document.write(snowflake + "\" border=\"0\"></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=\"");
document.write(snowflake + "\"
border=\"0\"></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=\"");
document.write(snowflake + "\"
border=\"0\"></div>");
}
}
}
function snowNS() { //
Netscape main animation function
for (i = 1000; i < no + 1000; ++ i) {
// iterate for every dot
yp[i] += sty[i];
if (yp[i] >
doc_height-50) {
xp[i] = Math.random()*(doc_width-am[i]-30);
yp[i] = 0;
stx[i] = 0.02 + Math.random()/10;
sty[i] = 0.7 +
Math.random();
doc_width = self.innerWidth;
doc_height =
self.innerHeight;
}
dx[i] += stx[i];
document.layers["dot"+i].top = yp[i];
document.layers["dot"+i].left =
xp[i] + am[i]*Math.sin(dx[i]);
}
setTimeout("snowNS()",
speed);
}
function snowIE() { // IE main animation function
for
(i = 0; i < no; ++ i) { // iterate for every dot
yp[i] +=
sty[i];
if (yp[i] > doc_height-50) {
xp[i] =
Math.random()*(doc_width-am[i]-30);
yp[i] = 0;
stx[i] = 0.02 +
Math.random()/10;
sty[i] = 0.7 + Math.random();
doc_width =
document.body.clientWidth;
doc_height =
document.body.clientHeight;
}
dx[i] += stx[i];
document.all["dot"+i].style.pixelTop = yp[i];
document.all["dot"+i].style.pixelLeft = xp[i] + am[i]*Math.sin(dx[i]);
}
setTimeout("snowIE()", speed);
}
if (ns4up) {
snowNS();
} else if (ie4up) {
snowIE();
}
</script>
Na této stránce jsou použity rámce, prohlížeč je však nepodporuje.