var no = 20;
var speed = 200;
var snowflake = "/img/snow1.gif";

var ns4up = (document.layers) ? 1 : 0;
var ie4up = (document.all) ? 1 : 0;
var dx, xp, yp;
var am, stx, sty;
var i, doc_width = 400, doc_height = 500;
if (ns4up) {
doc_width = self.innerWidth;
doc_height = self.innerHeight;
} else {
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;
xp[i] = Math.random()*(doc_width-100);
yp[i] = Math.random()*doc_height;
am[i] = Math.random()*40;
stx[i] = 0.18 + Math.random()/10;
sty[i] = 1.99 + Math.random();
if (ns4up) {
if (i == 0) {
document.write("<layer name=\"dot1"+ i +"\" left=\"15\" ");
document.write("top=\"15\" visibility=\"show\"><img src=\"");
document.write(snowflake + "\" border=\"0\"></layer>");
} else {
document.write("<layer name=\"dot1"+ i +"\" left=\"15\" ");
document.write("top=\"15\" visibility=\"show\"><img src=\"");
document.write(snowflake + "\" border=\"0\"></layer>");
}
} else {
if (i == 0) {
document.write("<div id=\"dot1"+ 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=\"dot1"+ 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() {
for (i = 0; i < no; ++ i) {
yp[i] += sty[i];
if (yp[i] > doc_height-10) {
xp[i] = Math.random()*(doc_width-am[i]-10);
yp[i] = 0;
stx[i] = 0.08 + Math.random()/10;
sty[i] = 0.9 + Math.random();
doc_width = self.innerWidth;
doc_height = self.innerHeight;
}
dx[i] += stx[i];
document.layers["dot1"+i].top = yp[i];
document.layers["dot1"+i].left = xp[i] + am[i]*Math.sin(dx[i]+30);
}
setTimeout("snowNS()", speed);
}
function snowIE() {
for (i = 0; i < no; ++ i) {
yp[i] += sty[i];
if (yp[i] > doc_height-10) {
xp[i] = Math.random()*(doc_width-am[i]-10);
yp[i] = 0;
stx[i] = 0.08 + Math.random()/10;
sty[i] = 0.9 + Math.random();
doc_width = document.body.clientWidth;
doc_height = document.body.clientHeight;
}
dx[i] += stx[i];
document.all["dot1"+i].style.pixelTop = yp[i];
document.all["dot1"+i].style.pixelLeft = xp[i] + am[i]*Math.sin(dx[i]+30);
}
setTimeout("snowIE()", speed);
}
if (ns4up) {
snowNS();
} else {
snowIE();
}