ns6 = document.getElementById;
ns  = document.layers;
ie  = document.all;





/*******************[AccessCSS]***********************************/
function accessCSS(layerID)	{    																//
  if(ns6){ return document.getElementById(layerID).style;}     //
   else if(ie){ return document.all[layerID].style; }         //
    else if(ns){ return document.layers[layerID]; }          //
}/***********************************************************/


/**************************[move Layer]*************************************/
function move(layer,x,y)  { accessCSS(layer).left=x; accessCSS(layer).top = y; } 


function browserBredde() {
	if (window.innerWidth) return window.innerWidth;
	else if (document.body.clientWidth) return document.body.clientWidth;
	else return 1024;
}

function browserHoyde() {

    	if (window.innerHeight) return window.innerHeight;
    	else if (document.body.clientHeight) return document.body.clientHeight;
    	else return 800;
}



function makeDiv(objName,parentDiv,w,h,content,x,y,overfl,positionType)
{	  
	  // positionType could be 'absolute' or 'relative'
	
		if (parentDiv==null) parentDiv='body';

    var oDiv = document.createElement ("DIV");
    oDiv.id = objName;
    
 		if (w) oDiv.style.width = w;
		if (h) oDiv.style.height= h;
		

	  if (content) oDiv.innerHTML=content;
	  if (positionType==null) positionType="absolute";
		oDiv.style.position = positionType;
		if (x) oDiv.style.left=x; else oDiv.style.left=-2000;
		if (y) oDiv.style.top=y; else oDiv.style.top=-2000;


		if (overfl) oDiv.style.overflow=overfl; else oDiv.style.overflow="hidden";
    eval('  document.'+parentDiv+'.appendChild (oDiv);  ');

    delete oDiv;
}

var snowC=0;
var x = new Array();
var y = new Array();
var speed = new Array();
var t=0;
var cC = new Array();
var ra = new Array();

function makeSnow() {
	x[snowC] = Math.round(Math.random()*(browserBredde()-60));
	y[snowC] = 10;
	speed[snowC] = Math.round(Math.random()*8)+1;
	var bilde="snow1.png";
	if (speed[snowC]<3)  bilde="snow4.png";
	 else if (speed[snowC]<6) bilde="snow3.png";
	  else if (speed[snowC]<8) bilde="snow2.png";
	
	
	makeDiv("snow"+snowC,"body",24,24,'<img src="'+bilde+'">');
	
	cC[snowC]=Math.random()*10;
	ra[snowC] = Math.random()*7;
	snowC++;
	
}


function moveSnow() {
	var r = Math.round(Math.random()*100);
	if (r>70 && snowC<30) makeSnow();

	for (t=0;t<snowC;t++) {
		y[t]+=speed[t];move("snow"+t,x[t],y[t]);
		if (y[t]>browserHoyde()-50) {y[t] = 10;x[t] = Math.round(Math.random()*(browserBredde()-60));}
		cC[t]+=0.01;
		x[t]+=Math.cos(cC[t]*ra[t]);
		
	}
	
	setTimeout('moveSnow()',20);
}

moveSnow();