Красивый снег на весь сайт

<script language="JavaScript1.2">  
  grphcs=new Array(2)  
Image0=new Image();  
Image0.src=grphcs[0]="http://fantasyflash.ru/script/web/image/sneg1.gif";  
Image1=new Image();  
Image1.src=grphcs[1]="http://fantasyflash.ru/script/web/image/sneg1.gif";  
  Amount=25;  
Ypos=new Array();  
Xpos=new Array();  
Speed=new Array();  
Step=new Array();  
Cstep=new Array();  
ns=(document.layers)?1:0;  
ns6=(document.getElementById&&!document.all)?1:0;  
  if (ns){  
for (i = 0; i < Amount; i++){  
var P=Math.floor(Math.random()*grphcs.length);  
rndPic=grphcs[P];  
document.write("<LAYER NAME='sn"+i+"' LEFT=0 TOP=0><img src="+rndPic+"></LAYER>");  
}  
}  
else{  
document.write('<div style="position:absolute;top:0px;left:0px"><div style="position:relative">');  
for (i = 0; i < Amount; i++){  
var P=Math.floor(Math.random()*grphcs.length);  
rndPic=grphcs[P];//osw  
document.write('<img id="si'+i+'" src="'+rndPic+'" style="position:absolute;top:0px;left:0px">');  
}  
document.write('</div></div>');  
}  
WinHeight=(ns||ns6)?window.innerHeight:window.document.body.clientHeight;  
WinWidth=(ns||ns6)?window.innerWidth-70:window.document.body.clientWidth;//fantasyflash.ru  
for (i=0; i < Amount; i++){  
  Ypos[i] = Math.round(Math.random()*WinHeight);  
  Xpos[i] = Math.round(Math.random()*WinWidth);  
  Speed[i]= Math.random()*5+3;  
  Cstep[i]=0;  
  Step[i]=Math.random()*0.1+0.05;  
}  
function fall(){  
var WinHeight=(ns||ns6)?window.innerHeight:window.document.body.clientHeight;  
var WinWidth=(ns||ns6)?window.innerWidth-70:window.document.body.clientWidth;  
var hscrll=(ns||ns6)?window.pageYOffset:document.body.scrollTop;  
var wscrll=(ns||ns6)?window.pageXOffset:document.body.scrollLeft;  
for (i=0; i < Amount; i++){  
sy = Speed[i]*Math.sin(90*Math.PI/180);  
sx = Speed[i]*Math.cos(Cstep[i]);  
Ypos[i]+=sy;  
Xpos[i]+=sx;  
if (Ypos[i] > WinHeight){  
Ypos[i]=-60;  
Xpos[i]=Math.round(Math.random()*WinWidth);  
Speed[i]=Math.random()*5+3;  
}  
if (ns){  
document.layers['sn'+i].left=Xpos[i];  
document.layers['sn'+i].top=Ypos[i]+hscrll;  
}  
else if (ns6){  
document.getElementById("si"+i).style.left=Math.min(WinWidth,Xpos[i]);  
document.getElementById("si"+i).style.top=Ypos[i]+hscrll;  
}  
else{  
eval("document.all.si"+i).style.left=Xpos[i];  
eval("document.all.si"+i).style.top=Ypos[i]+hscrll;  
}  
Cstep[i]+=Step[i];  
}  
setTimeout('fall()',20);  
}  
  window.onload=fall  
//-->  
</script>