Amount = 50; 

Image0 = new Image(); 
Image0.src = "http://szenprogs.ru/images/snow/snow1.gif"; 

grphcs = new Array(1); 
grphcs[0] = "http://szenprogs.ru/images/snow/snow1.gif"; 

Ypos = new Array(); 
Xpos = new Array(); 
Speed = new Array(); 
Step = new Array(); 
Cstep = new Array(); 
var YPosA; 
ns = (document.layers)?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><a http://szenprogs.ru/blog/2009-05-06-41><img src="+rndPic+"><\/a><\/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]; 
    document.write('<img id="si'+i+'" src="'+rndPic+'" style="position:absolute; top:0px; left:0px; width:20px; height:20px;">'); 
  } 
  document.write('<\/div><\/div>'); 
} 
WinHeight=(document.layers)?window.innerHeight:window.document.body.clientHeight; 
WinWidth=(document.layers)?window.innerWidth:window.document.body.clientWidth; 
for (i=0; i < Amount; i++) { 
  Ypos[i] = Math.round(Math.random()*WinHeight*0.9); 
  Xpos[i] = Math.round(Math.random()*WinWidth*0.9); 
  Speed[i]= Math.random()*0.03+0.5; 
  Cstep[i] = 0; 
  Step[i] = Math.random()*0.1+0.05; 
} 
function fall() { 
  var WinHeight = (document.layers)?window.innerHeight:window.document.body.clientHeight; 
  var WinWidth = (document.layers)?window.innerWidth:window.document.body.clientWidth; 
  var hscrll = (document.layers)?window.pageYOffset:document.body.scrollTop; 
  var wscrll = (document.layers)?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*0.9) { 
      Ypos[i] = -60; 
      Xpos[i] = Math.round(Math.random()*WinWidth*0.9); 
      Speed[i] = Math.random()*1+1; 
    } 
    if (ns) { 
      document.layers['sn'+i].left = Xpos[i]; 
      document.layers['sn'+i].top = Ypos[i]+hscrll; 
    } else { 
      document.getElementById('si'+i).style.left = Xpos[i]+'px'; 
      YPosA=Ypos[i]+hscrll; 
      document.getElementById('si'+i).style.top = YPosA+'px'; 
    } 
    Cstep[i] += Step[i]; 
  } 
  setTimeout('fall()',10); 
} 
fall();