var no=20;
var speed=1;
var snowflake="sneg.gif";
var ns4up=(document.layers)?1:0;
var ie4up=(document.all)?1:0;
ns4up=1;
var dx, xp, yp;
var am, stx, sty;
var i,doc_width=800,doc_height=600;
if (ie4up) {
doc_width=document.body.clientWidth;
doc_height=document.body.clientHeight;
} else if(ns4up){
doc_width = self.innerWidth;
doc_height = self.innerHeight;
}
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;
xp[i] = Math.random()*(doc_width-50);
yp[i] = Math.random()*doc_height;
am[i] = Math.random()*20;
stx[i] = 0.02 + Math.random()/10;
sty[i] = 0.7 + Math.random();
if(ie4up)document.write('<div id="dot'+i+'" style="position:absolute;"><img src="'+snowflake+'" /></div>');
else if(ns4up)document.write('<layer id="dot'+i+'" visibility="show"><img src="'+snowflake+'" /></layer>');
}
function snowNS() {
for (i = 0; i < no; ++ i) {
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();
}
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() {
for (i = 0; i < no; ++ i) {
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();
}
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(ie4up)snowIE();
else if(ns4up)snowNS();