var no =5; 		// snow number
var speed = 20; 	// smaller number moves the snow faster
var item;		// images to view. Insert them in for-loop below
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;
}
image = new Array();
item = new Array();
dx = new Array();
xp = new Array();
yp = new Array();
am = new Array();
stx = new Array();
sty = new Array();
/*==========================================================================*/
for (j = 0; j < no; ++j){
	item[j] = "images/blasipp.gif";
	++j;
	item[j] = "images/vitsipp.gif";
}
/*==========================================================================*/
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()*40;         	// 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("<layer name=\"dot"+ i +"\" left=\"15\" ");
document.write("top=\"15\" visibility=\"show\"><img src=\"");
document.write(item[i] + "\" border=\"0\"></layer>");
} else {
document.write("<layer name=\"dot"+ i +"\" left=\"15\" ");
document.write("top=\"15\" visibility=\"show\"><img src=\"");
document.write(item[i] + "\" 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(item[i] + "\" 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(item[i] + "\" border=\"0\"></div>");
      }
   }
}
/*==========================================================================*/
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-100) {	//was 50
xp[i] = Math.random()*(doc_width-am[i]-100); //Was 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] + am[i]*Math.cos(dx[i]); //was only yp[i]; Skapar en virvelrörelse
document.layers["dot"+i].left = xp[i] + am[i]*Math.sin(dx[i]/2);
}
setTimeout("snowNS()", speed);
}
/*==========================================================================*/
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-100) {	//Was 50
xp[i] = Math.random()*(doc_width-am[i]-100); //Was 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] + am[i]*Math.sin(dx[i]); //was only yp[i]; Skapar en virvelrörelse
document.all["dot"+i].style.pixelLeft = xp[i] - am[i]*Math.sin(dx[i]);
}
setTimeout("snowIE()", speed);
}
/*==========================================================================*/
if (ns4up) {
snowNS();
} else if (ie4up) {
snowIE();
}