var no = 50; 
var speed = 1; 
var snowflake = "/img/sneg.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 = 1020, doc_height = 800;
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;         
	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) {                  
		if (i == 0) {
		document.write("<layer name=\"dot"+ i +"\" left=\"15\" ");
		document.write("top=\"15\" visibility=\"show\"><img src=\"");
		document.write(snowflake + "\" border=\"0\"></layer>");
	} else {
		document.write("<layer name=\"dot"+ i +"\" left=\"15\" ");
		document.write("top=\"15\" visibility=\"show\"><img src=\"");
		document.write(snowflake + "\" border=\"0\"></layer>");
	   }
	} else if (ie4up) {
		if (i == 0) {
			document.write("<div id=\"dot"+ 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=\"dot"+ 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-50) {
			xp[i] = Math.random()*(doc_width-am[i]-30);
			yp[i] = 0;
			stx[i] = 0.2 + Math.random()/10;
			sty[i] = 2 + 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()", 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] = 0.2 + Math.random()/10;
			sty[i] = 2 + 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()", speed);
}
if (ns4up) {
	snowNS();
} else if (ie4up) {
	snowIE();
}