Snow-script skal kun sne lodret og ikke vandret hvordan?

Hejsa...

Jeg har lånt et snowscript fra dynamicdrive.com

dette script virker helt perfekt, på nær at det udvider browers vinduet vandret hvilket er meget irriterende.

Er det muligt at fixe scriptet?

//Snow - http://www.btinternet.com/~kurt.grigg/javascript

if  ((document.getElementById) &&
window.addEventListener || window.attachEvent){

(function(){

//Configure here.

var num = 30;  //Number of flakes
var timer = 30; //setTimeout speed. Varies on different comps
var enableinNS6 = 1 //Enable script in NS6/Mozilla? Snow animation could be slow in those browsers. (1=yes, 0=no).

//End.

var y = [];
var x = [];
var fall = [];
var theFlakes = [];
var sfs = [];
var step = [];
var currStep = [];
var h,w,r;
var d = document;
var pix = "px";
var domWw = (typeof window.innerWidth == "number");
var domSy = (typeof window.pageYOffset == "number");
var idx = d.getElementsByTagName('div').length;

if (d.documentElement.style &&
typeof d.documentElement.style.MozOpacity == "string")
num = 12;

for (i = 0; i < num; i++){
sfs[i] = Math.round(1 + Math.random() * 1);

document.write('<div id="flake'+(idx+i)+'" style="position:absolute;top:0px;left:0px;width:'
+sfs[i]+'px;height:'+sfs[i]+'px;background-color:#ffffff;font-size:'+sfs[i]+'px"><\/div>');

currStep[i] = 0;
fall[i] = (sfs[i] == 1)?
Math.round(2 + Math.random() * 2): Math.round(3 + Math.random() * 2);
step[i] = (sfs[i] == 1)?
0.05 + Math.random() * 0.1 : 0.05 + Math.random() * 0.05 ;
}


if (domWw) r = window;
else{
  if (d.documentElement &&
  typeof d.documentElement.clientWidth == "number" &&
  d.documentElement.clientWidth != 0)
  r = d.documentElement;
else{
  if (d.body &&
  typeof d.body.clientWidth == "number")
  r = d.body;
}
}


function winsize(){
var oh,sy,ow,sx,rh,rw;
if (domWw){
  if (d.documentElement && d.defaultView &&
  typeof d.defaultView.scrollMaxY == "number"){
  oh = d.documentElement.offsetHeight;
  sy = d.defaultView.scrollMaxY;
  ow = d.documentElement.offsetWidth;
  sx = d.defaultView.scrollMaxX;
  rh = oh-sy;
  rw = ow-sx;
}
else{
  rh = r.innerHeight;
  rw = r.innerWidth;
}
h = rh - 2; 
w = rw - 2;
}
else{
h = r.clientHeight - 2;
w = r.clientWidth - 2;
}
}


function scrl(yx){
var y,x;
if (domSy){
y = r.pageYOffset;
x = r.pageXOffset;
}
else{
y = r.scrollTop;
x = r.scrollLeft;
}
return (yx == 0)?y:x;
}


function snow(){
var dy,dx;

for (i = 0; i < num; i++){
dy = fall[i];
dx = fall[i] * Math.cos(currStep[i]);

y[i]+=dy;
x[i]+=dx;

if (x[i] >= w || y[i] >= h){
  y[i] = -10;
  x[i] = Math.round(Math.random() * w);
  fall[i] = (sfs[i] == 1)?
  Math.round(2 + Math.random() * 2): Math.round(3 + Math.random() * 2);
  step[i] = (sfs[i] == 1)?
  0.05 + Math.random() * 0.1 : 0.05 + Math.random() * 0.05 ;
}

theFlakes[i].top = y[i] + scrl(0) + pix;
theFlakes[i].left = x[i] + scrl(1) + pix;

currStep[i]+=step[i];
}
setTimeout(snow,timer);
}


function init(){
winsize();
for (i = 0; i < num; i++){
theFlakes[i] = document.getElementById("flake"+(idx+i)).style;
y[i] = Math.round(Math.random()*h);
x[i] = Math.round(Math.random()*w);
}
snow();
}


if (window.addEventListener){
window.addEventListener("resize",winsize,false);
window.addEventListener("load",init,false);
} 
else if (window.attachEvent){
window.attachEvent("onresize",winsize);
window.attachEvent("onload",init);
}

})();
}//End.

/nemet_dk