<!-- Snow Script by kurt.grigg@virgin.net, slightly modifyed by Niels Chr. Rød (dec 2003)
/* 1-12-2004 LiTuS
cambis per a fer servir l'estandard W3C perque funcioni amb Firefox
 - es fa servir la funcio getElementById i es possa id unic a cada capa div
 - els valors dels pixels es donen amb 'px' al final
 - es reste K pixels de W i H  per evitar que la barra de scroll quedi 
alterada per l'efecte (en Firefox), tambe es posa limit W al desplaçament X
*/
Y = new Array();
X = new Array();
S = new Array();
A = new Array();
B = new Array();
M = new Array();
V = (document.layers)?1:0;

K = 10;

iH=(V)?window.innerHeight:window.document.body.clientHeight-K;
iW=(V)?window.innerWidth:window.document.body.clientWidth-K;
N = Math.round(iH*iW/25000)+1; //Number of snow balls, initially 40

for (i=0; i < N; i++){                                                                
 Y[i]=Math.round(Math.random()*iH);
 X[i]=Math.round(Math.random()*iW);
 S[i]=Math.round(Math.random()*4+1);	//Speed of snow, initially as 5+2
 A[i]=0;
 B[i]=Math.random()*0.1+0.1;
 M[i]=Math.round(Math.random()*2+1); //Size of snow ball, initially at 1+1
}
if (V){
for (i = 0; i < N; i++)
{document.write("<LAYER NAME='sn"+i+"' LEFT=0 TOP=0 BGCOLOR='#F12E38' CLIP='0,0,"+M[i]+","+M[i]+"'></LAYER>")}
}
else{
document.write('<div style="position:absolute;top:0px;left:0px">');
document.write('<div style="position:relative">');
for (i = 0; i < N; i++)
{document.write('<div id="sn'+i+'" style="position:absolute;top:0px;left:0px;width:'+M[i]+'px;height:'+M[i]+'px;background:#FF9933;font-size:'+M[i]+'"></div>')}
document.write('</div></div>');
}

function snow(){
var H=(V)?window.innerHeight:window.document.body.clientHeight-K;
var W=(V)?window.innerWidth:window.document.body.clientWidth-K;
var T=(V)?window.pageYOffset:document.body.scrollTop;
var L=(V)?window.pageXOffset:document.body.scrollLeft;
for (i=0; i < N; i++){
sy=S[i]*Math.sin(Math.PI/2); // 90*Math.PI/180)
sx=S[i]*Math.cos(A[i])+0.2;
Y[i]+=sy;
X[i]+=sx;if (X[i]>W) X[i]-=2*sx; 
if (Y[i] > H){
Y[i]=-10;
X[i]=Math.round(Math.random()*W);
M[i]=Math.round(Math.random()*2+1);
S[i]=Math.round(Math.random()*4+1);
}
if (V){document.layers['sn'+i].left=X[i];document.layers['sn'+i].top=Y[i]+T}
//else{si[i].style.pixelLeft=X[i];si[i].style.pixelTop=Y[i]+T}
else {var elm=document.getElementById('sn'+i);elm.style.left=X[i]+'px';elm.style.top=(Y[i]+T)+'px'} 
A[i]+=B[i];
}
setTimeout('snow()',N+10); //timeout initially 10
}

