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var snowFall=function(){function g(){var a={flakeCount:35,flakeColor:"#ffffff",flakeIndex:999999,minSize:1,maxSize:2,minSpeed:1,maxSpeed:5,round:!1,shadow:!1,collection:!1,image:!1,collectionHeight:40},b={},c=[],g=0,m=0,j=0,k=0,l=0,h=0,f=0,e=function(a,b){return Math.round(a+Math.random()*(b-a))},n=function(a,b){for(var c in b)a.style[c]=b[c]+("width"==c||"height"==c||0<=c.indexOf("radius")?"px":"")},r=function(d,b,c,g,f){this.id=f;this.x=d+l;this.y=b+k;this.size=c;this.speed=g;this.step=0;this.stepSize=
e(1,10)/100;a.collection&&(this.target=canvasCollection[e(0,canvasCollection.length-1)]);d=null;a.image?(d=new Image,d.src=a.image):(d=document.createElement("div"),n(d,{background:a.flakeColor}));d.className="snowfall-flakes";d.setAttribute("id","flake-"+this.id);n(d,{width:this.size,height:this.size,position:"absolute",top:this.y,left:this.x,fontSize:0,zIndex:a.flakeIndex});a.round&&(d.style,n(d,{"-moz-border-radius":a.maxSize,"-webkit-border-radius":a.maxSize,borderRadius:a.maxSize}));a.shadow&&
n(d,{"-moz-box-shadow":"1px 1px 1px #555","-webkit-box-shadow":"1px 1px 1px #555",boxShadow:"1px 1px 1px #555"});document.body.appendChild(d);this.element=d;this.update=function(){this.y+=this.speed;this.y>k+m-(this.size+6)&&this.reset();this.element.style.top=this.y+"px";this.element.style.left=~~this.x+"px";this.step+=this.stepSize;this.x+=Math.cos(this.step);(this.x>l+j-h||this.x<h)&&this.reset()};this.reset=function(){this.y=k;this.x=l+e(h,j-h);this.stepSize=e(1,10)/100;this.size=e(100*a.minSize,
100*a.maxSize)/100;this.speed=e(a.minSpeed,a.maxSpeed)}},q=function(){for(var a=0;a<c.length;a+=1)c[a].update();f=setTimeout(function(){q()},30)};return{snow:function(d,p){for(var f in p)a.hasOwnProperty(f)&&(a[f]=p[f]);b=d;m=b.clientHeight;j=b.offsetWidth;k=b.offsetTop;l=b.offsetLeft;b.snow=this;"body"===b.tagName.toLowerCase()&&(h=25);window.onresize=function(){m=b.clientHeight;j=b.offsetWidth;k=b.offsetTop;l=b.offsetLeft};for(i=0;i<a.flakeCount;i+=1)g=c.length,c.push(new r(e(h,j-h),e(0,m),e(100*
a.minSize,100*a.maxSize)/100,e(a.minSpeed,a.maxSpeed),g));q()},clear:function(){for(var a=null,a=b.getElementsByClassName?b.getElementsByClassName("snowfall-flakes"):b.querySelectorAll(".snowfall-flakes"),e=a.length;e--;)b.removeChild(a[e]);c=[];clearTimeout(f)}}}return{snow:function(a,b){if("string"==typeof b)if(0<a.length)for(var c=0;c<a.length;c++)a[c].snow&&a[c].snow.clear();else a.snow.clear();else if(0<a.length)for(c=0;c<a.length;c++)(new g).snow(a[c],b);else(new g).snow(a,b)}}}();
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