var no = 20;
var speed = 10;

var ns4up = (document.layers) ? 1 : 0;
var ie4up = (document.all) ? 1 : 0;

var dx, xp, yp; 
var am, stx, sty; 
var i, doc_width = 800, doc_height = 600;
if (ns4up) {
	doc_width = self.innerWidth;
	doc_height = self.innerHeight-30;
	} 
else if (ie4up) {
	doc_width = document.body.clientWidth;
	doc_height = document.body.clientHeight-30;
	}
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 (ns4up) {                  
		document.write("<layer name='dot"+ i +"' left='1' width=\"2\" height=\"2\" BGCOLOR='#FFFFFF' ");
		document.write("top=\"15\" visibility=\"show\"></layer>");
		}
	else if (ie4up) {
		document.write("<div id=\"dot"+ i +"\" style=\"POSITION: ");
		document.write("absolute; Z-INDEX: "+ i +"; VISIBILITY: ");
		document.write("visible; TOP: 1px; LEFT: 1px; WIDTH: 2px; HEIGHT: 2px; FONT-SIZE:2px; background:#FFFFFF;\"></div>");
		}
}


function snowNS() { 
for (i = 0; i < no; ++ i) {  
	yp[i] += sty[i];
	if (yp[i] > doc_height-5) {
		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-30;
		}
	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-5) {
		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-30;
		}
	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]);
	document.all["dot"+i].style.pixelHeight = 1;
	}
setTimeout("snowIE()", speed);
}


if (ns4up) {
	snowNS();
	}
else if (ie4up) {
	snowIE();
	}
// End -->