var IsIE6=!!document.all&&!window.XMLHttpRequest var ext=(IsIE6)?'gif':'png';var IsIE=!!document.all;var snowsrc=new Image();snowsrc.src="images/snowflake."+ext var snowsrc1=new Image;snowsrc1.src="images/snowflake1."+ext var densite=50;var dx,xp,yp;var am,vx,vy;var i,doc_width,doc_height;var vitesseH=1 var changevent=true var vent=new Array(10,0,-10,-20,0,-5,-10,-5,-3,0,2,3,5,10,20,30,50,60,80,70,50,30,10,0,-1,-5,-10,-20);var forceH=0;var drift=10;var changechute=true var chute=new Array(1,2,3,2,1,1,2,3,4,5,4,3,5,4,6,4,2,3,2,1,1,1,1,1,1)var forceV=0 var vitesseV=1 var dx=new Array();var xp=new Array();var yp=new Array();var am=new Array();var vx=new Array();var vy=new Array();function init(){doc_width=document.body.offsetWidth;doc_height=document.body.offsetHeight;densite=Math.floor(doc_width/10);var flake=document.createElement('img');flake.style.border='0';flake.style.width="auto";flake.style.height="auto";var flakediv=document.createElement('div');flakediv.style.position='absolute';flakediv.style.top='15px';flakediv.style.left='15px';flakediv.style.display="none";for(i=0;i<densite;i++){dx[i]=0;xp[i]=Math.random()*(doc_width-50);yp[i]=Math.random()*doc_height;am[i]=Math.random()*40;vx[i]=0.02+Math.random()/10*vitesseH;vy[i]=0.9+Math.random()*vitesseV;var opacite=Math.random()*100;var newflake=flakediv.cloneNode(true);newflake.id="flocon"+i;newflake.zIndex=i+1;newpic=flake.cloneNode(true);newpic.src=(i%2==0)?snowsrc.src:snowsrc1.src;newflake.appendChild(newpic);IsIE?newflake.style.filter="alpha(opacity="+opacite+")":newflake.style.opacity=opacite/100;document.body.appendChild(newflake)}var neige=setInterval(function(){snow()},30);if(changevent==true){var girouette=setInterval(function(){wind()},4250)}if(changechute==true){var intesite=setInterval(function(){fall()},7130)}}function wind(){drift=vent[forceH]forceH++forceH=(forceH>vent.length)?0:forceH}function fall(){vitesseV=chute[forceV]forceV++forceV=(forceV>chute.length-1)?0:forceV}function snow(){doc_width=document.body.offsetWidth;doc_height=document.body.offsetHeight;for(i=0;i<densite;i++){yp[i]+=vy[i];if(yp[i]>doc_height-20){xp[i]=(Math.random()*(doc_width-am[i]-30));yp[i]=0;vx[i]=(0.02+Math.random()/10)*vitesseH;vy[i]=(0.7+Math.random())*vitesseV}dx[i]+=vx[i];document.getElementById("flocon"+i).style.display="block"document.getElementById("flocon"+i).style.top=yp[i]+"px";if(drift>0){xp[i]=((xp[i]+drift/10)>doc_width)?0:xp[i]+drift/10}if(drift<0){xp[i]=((xp[i]+drift/10)<0)?doc_width:xp[i]+drift/10}document.getElementById("flocon"+i).style.left=xp[i]+am[i]*Math.sin(dx[i])+"px"}}