var ns4up = (document.layers) ? 1 : 0; // browser sniffer*/
var ie4up = (document.all) ? 1 : 0;
var ns6up = (document.getElementById&&!document.all) ? 1 : 0;
var ende = "nichts";
function aender()
{
ende = "ok";
}
var no = 11;
var dx, xp, yp;                        // coordinate and position variables
var am, stx, sty;                      // amplitude and step variables
var i, doc_width = 1040, doc_height = 500;
var rndSnowsrc, snowspeed;
snowspeed = new Array();
doc_width = 700;
doc_heigth = 475;
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;                            // Koordinaten vars setzen
xp[i] = Math.random()*(doc_width-50); // position vars setzen
yp[i] = Math.random()*doc_height;
am[i] = Math.random()*20;             // amplitude vars setzen
stx[i] = 0.02 + Math.random()/10;     // schritt vars setzen
sty[i] = 0.7 + Math.random();         // schritt vars setzen
rndSnowsrc = Math.round(2*Math.random());
switch(rndSnowsrc)
{
case 0:
snowsrc = "img-kalender/flocke01.gif";
snowspeed[i] = 0;
break;
case 1:
snowsrc = "img-kalender/flocke02.gif";
snowspeed[i] = 1;
break;
case 2:
snowsrc = "img-kalender/flocke01.gif";
snowspeed[i] = 2;
break;
default:
snowsrc = "img-kalender/flocke02.gif";
snowspeed[i] = 1;
break;
}
if (ns4up) { // set layers
if (i == 0) {
document.write("<layer name=\"dot"+ i +"\" left=\"15\" top=\"15\" visibility=\"show\"><img src='"+snowsrc+"' border=\"0\"></layer>");
} else {
document.write("<layer name=\"dot"+ i +"\" left=\"15\" top=\"15\" visibility=\"show\"><img src='"+snowsrc+"' border=\"0\"></layer>");
}
} else if (ie4up||ns6up) {
if (i == 0) {
document.write("<div id=\"dot"+ i +"\" style=\"POSITION: absolute; Z-INDEX: 10000; VISIBILITY: visible; TOP: 15px; LEFT: 15px;\"><img src='"+snowsrc+"' border=\"0\"></div>");
} else {
document.write("<div id=\"dot"+ i +"\" style=\"POSITION: absolute; Z-INDEX: 10000; VISIBILITY: visible; TOP: 15px; LEFT: 15px;\"><img src='"+snowsrc+"' 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-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();
doc_width = self.innerWidth;
doc_width = 700;
doc_height = self.innerHeight;
doc_heigth = 400;
}
dx[i] += stx[i];
document.layers["dot"+i].top = yp[i];
document.layers["dot"+i].left = xp[i] + am[i]*Math.sin(dx[i]);
}
if (ende == "ok")
{
window.clearTimeout(timeout_id);
}
else
{
var timeout_id = setTimeout("snowNS()", 10);
}
}
function snowIE_NS6() { // IE and NS6 main animation function
for (i = 0; i < no; ++ i) { // iterate for every dot
yp[i] += sty[i] + snowspeed[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();
doc_width = ns6up?window.innerWidth : 700;
doc_height = ns6up?window.innerHeight : document.body.clientHeight;
doc_heigth = 400;
}
dx[i] += stx[i];
if (ie4up){
document.all["dot"+i].style.pixelTop = yp[i];
document.all["dot"+i].style.pixelLeft = xp[i] + am[i]*Math.sin(dx[i]);
}
else if (ns6up){
document.getElementById("dot"+i).style.top=yp[i];
document.getElementById("dot"+i).style.left=xp[i] + am[i]*Math.sin(dx[i]);
}
}
if (ende == "ok")
{
window.clearTimeout(timeout_id);
}
else
{
var timeout_id = setTimeout("snowIE_NS6()", 10);
}
}
if (ende == "nichts")
{
if (ns4up) {
snowNS();
} else if (ie4up||ns6up) {
snowIE_NS6();
}
}
if (ende == "ok")
{
clearTimeout(timeout_id);
}

// document.onmousedown = aender;