var snow_no = 15; // snow number (11)
var snow_speed = 13; // smaller number moves the snow faster (15)
var snow_flakes = new Array("angelmini.gif"); //("http://shared.guweb.com/bgfx/snow/snow.gif")
var snow_reverse = 0;
/*
Basic script for all snow-like background animations
Original script source unknown, but found as public domain code on a JavaScript site
Many modifications by NOVASYS.
Distribution prohibited.
---
This new version should be included in the HTML page AFTER some JavaScript variables
have been initialized. These are:
var snow_no = 1; // number of "snow flakes"
var snow_speed = 50; // moving speed (smaller value=faster)
var snow_flakes = array(...) // array with flake images (min. 1 item)
var snow_reverse = 0; // set if "flakes" should fly upwards
snow_speed is simply the update interval in milliseconds.
*/
if (!snow_reverse) var snow_reverse=0;
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 = 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;
}
*/
// This method works regardless of browser brand:
doc_width = self.innerWidth;
doc_height = self.innerHeight;
if (!doc_width) {
doc_width = document.body.clientWidth;
doc_height = document.body.clientHeight;
}
var bgfxint;
dx = new Array();
xp = new Array();
yp = new Array();
am = new Array();
stx = new Array();
sty = new Array();
var flakeid=0;
var code="";
for (i = 0; i < snow_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
snowflake = snow_flakes[flakeid];
if (ns4up) { // set layers
document.write("![](\"");)
");
} else /*if (ie4up)*/ {
// this method is used for any browser...
code += ''
+ '
' + code + '
');
}
function snowNS() { // Netscape main animation function
for (i = 0; i < snow_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 = self.innerWidth;
doc_height = self.innerHeight;
}
dx[i] += stx[i];
if (snow_reverse)
document.layers["dot"+i].top = doc_height - yp[i] + window.pageYOffset - 50;
else
document.layers["dot"+i].top = yp[i] + window.pageYOffset;
document.layers["dot"+i].left = xp[i] + am[i]*Math.sin(dx[i]) + window.pageXOffset;
}
bgfxint = setTimeout("snowNS()", snow_speed);
}
function snowIE() { // IE main animation function
for (i = 0; i < snow_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];
if (snow_reverse)
document.all["dot"+i].style.pixelTop = doc_height - yp[i] + document.body.scrollTop - 50;
else
document.all["dot"+i].style.pixelTop = yp[i] + document.body.scrollTop;
document.all["dot"+i].style.pixelLeft = xp[i] + am[i]*Math.sin(dx[i]) + document.body.scrollLeft;
}
bgfxint = setTimeout("snowIE()", snow_speed);
}
function snowOther() { // last resort animation function (used for FireFox, for example)
ofsX = document.body.scrollLeft;
ofsY = document.body.scrollTop;
if (!ofsX) {
ofsX = window.pageXOffset;
if (!ofsX) ofsX=0;
}
if (!ofsY) {
ofsY = window.pageYOffset;
if (!ofsY) ofsY=0;
}
for (i = 0; i < snow_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];
dot = document.getElementById("dot"+i);
if (snow_reverse)
newY = doc_height - yp[i] + ofsY - 50;
else
newY = yp[i] + ofsY;
if (dot.style) {
if (dot.style.pixelTop) {
dot.style.pixelTop = newY;
dot.style.pixelLeft = xp[i] + am[i]*Math.sin(dx[i]) + ofsX;
} else {
dot.style.top = newY;
dot.style.left = xp[i] + am[i]*Math.sin(dx[i]) + ofsX;
}
} else return; // interrupt animation (browser not supported)
}
bgfxint = setTimeout("snowOther()", snow_speed);
}
if (ns4up) {
snowNS();
} else if (ie4up) {
snowIE();
} else {
// check if we can find the snow
if (document.getElementById) {
anysnow = document.getElementById('dot0');
if (anysnow) snowOther();
}
}
function bgfx_stop() {
if (bgfxint) {
clearTimeout(bgfxint);
}
if (document.getElementById)
mydiv = document.getElementById("bgfxdiv");
if (mydiv) mydiv.innerHTML="";
}