/* Snow Effect Script Created and submitted by Altan d.o.o. (snow@altan.hr, http://www.altan.hr/snow/index.html) Permission granted to Dynamicdrive.com to feature script in archive For full source code and installation instructions to this script, visit http://dynamicdrive.com */
//Configure below to change URL path to the snow image var snowsrc="snow.gif" // Configure below to change number of snow to render var no = 10;
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; }
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("
"); } else { document.write("
"); } } }
function snowNS() { // Netscape 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 = 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()", 10); }
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()", 10); }
if (ns4up) { snowNS(); } else if (ie4up) { snowIE(); }