var snowStorm=(function(window,document){this.flakesMax=128;this.flakesMaxActive=35;this.animationInterval=35;this.excludeMobile=true;this.flakeBottom=null;this.followMouse=true;this.snowColor='#fff';this.snowCharacter='•';this.snowStick=true;this.targetElement=null;this.useMeltEffect=true;this.useTwinkleEffect=false;this.usePositionFixed=false;this.freezeOnBlur=true;this.flakeLeftOffset=0;this.flakeRightOffset=0;this.flakeWidth=15;this.flakeHeight=10;this.vMaxX=5;this.vMaxY=4;this.zIndex=0;var s=this,storm=this,i,isIE=navigator.userAgent.match(/msie/i),isIE6=navigator.userAgent.match(/msie 6/i),isWin98=navigator.appVersion.match(/windows 98/i),isMobile=navigator.userAgent.match(/mobile/i),isBackCompatIE=(isIE&&document.compatMode==='BackCompat'),noFixed=(isMobile||isBackCompatIE||isIE6),screenX=null,screenX2=null,screenY=null,scrollY=null,vRndX=null,vRndY=null,windOffset=1,windMultiplier=2,flakeTypes=6,fixedForEverything=false,opacitySupported=(function(){try{document.createElement('div').style.opacity='0.5'}catch(e){return false}return true}()),didInit=false,docFrag=document.createDocumentFragment();this.timers=[];this.flakes=[];this.disabled=false;this.active=false;this.meltFrameCount=20;this.meltFrames=[];this.events=(function(){var old=(window.attachEvent),slice=Array.prototype.slice,evt={add:(old?'attachEvent':'addEventListener'),remove:(old?'detachEvent':'removeEventListener')};function getArgs(oArgs){var args=slice.call(oArgs),len=args.length;if(old){args[1]='on'+args[1];if(len>3){args.pop()}}else if(len===3){args.push(false)}return args}function apply(args,sType){var oFunc=args.shift()[evt[sType]];if(old){oFunc(args[0],args[1])}else{oFunc.apply(this,args)}}function addEvent(){apply(getArgs(arguments),'add')}function removeEvent(){apply(getArgs(arguments),'remove')}return{add:addEvent,remove:removeEvent}}());function rnd(n,min){if(isNaN(min)){min=0}return(Math.random()*n)+min}function plusMinus(n){return(parseInt(rnd(2),10)===1?n*-1:n)}this.randomizeWind=function(){vRndX=plusMinus(rnd(s.vMaxX,0.2));vRndY=rnd(s.vMaxY,0.2);if(this.flakes){for(var i=0;i<this.flakes.length;i++){if(this.flakes[i].active){this.flakes[i].setVelocities()}}}};this.scrollHandler=function(){scrollY=(s.flakeBottom?0:parseInt(window.scrollY||document.documentElement.scrollTop||document.body.scrollTop,10));if(isNaN(scrollY)){scrollY=0}if(!fixedForEverything&&!s.flakeBottom&&s.flakes){for(var i=s.flakes.length;i--;){if(s.flakes[i].active===0){s.flakes[i].stick()}}}};this.resizeHandler=function(){if(window.innerWidth||window.innerHeight){screenX=window.innerWidth-(!isIE?16:2)-s.flakeRightOffset;screenY=(s.flakeBottom?s.flakeBottom:window.innerHeight)}else{screenX=(document.documentElement.clientWidth||document.body.clientWidth||document.body.scrollWidth)-(!isIE?8:0)-s.flakeRightOffset;screenY=s.flakeBottom?s.flakeBottom:(document.documentElement.clientHeight||document.body.clientHeight||document.body.scrollHeight)}screenX2=parseInt(screenX/2,10)};this.resizeHandlerAlt=function(){screenX=s.targetElement.offsetLeft+s.targetElement.offsetWidth-s.flakeRightOffset;screenY=s.flakeBottom?s.flakeBottom:s.targetElement.offsetTop+s.targetElement.offsetHeight;screenX2=parseInt(screenX/2,10)};this.freeze=function(){if(!s.disabled){s.disabled=1}else{return false}for(var i=s.timers.length;i--;){clearInterval(s.timers[i])}};this.resume=function(){if(s.disabled){s.disabled=0}else{return false}s.timerInit()};this.toggleSnow=function(){if(!s.flakes.length){s.start()}else{s.active=!s.active;if(s.active){s.show();s.resume()}else{s.stop();s.freeze()}}};this.stop=function(){this.freeze();for(var i=this.flakes.length;i--;){this.flakes[i].o.style.display='none'}s.events.remove(window,'scroll',s.scrollHandler);s.events.remove(window,'resize',s.resizeHandler);if(s.freezeOnBlur){if(isIE){s.events.remove(document,'focusout',s.freeze);s.events.remove(document,'focusin',s.resume)}else{s.events.remove(window,'blur',s.freeze);s.events.remove(window,'focus',s.resume)}}};this.show=function(){for(var i=this.flakes.length;i--;){this.flakes[i].o.style.display='block'}};this.SnowFlake=function(parent,type,x,y){var s=this,storm=parent;this.type=type;this.x=x||parseInt(rnd(screenX-20),10);this.y=(!isNaN(y)?y:-rnd(screenY)-12);this.vX=null;this.vY=null;this.vAmpTypes=[1,1.2,1.4,1.6,1.8];this.vAmp=this.vAmpTypes[this.type];this.melting=false;this.meltFrameCount=storm.meltFrameCount;this.meltFrames=storm.meltFrames;this.meltFrame=0;this.twinkleFrame=0;this.active=1;this.fontSize=(10+(this.type/5)*10);this.o=document.createElement('div');this.o.innerHTML=storm.snowCharacter;this.o.style.color=storm.snowColor;this.o.style.position=(fixedForEverything?'fixed':'absolute');this.o.style.width=storm.flakeWidth+'px';this.o.style.height=storm.flakeHeight+'px';this.o.style.fontFamily='arial,verdana';this.o.style.overflow='hidden';this.o.style.fontWeight='normal';this.o.style.zIndex=storm.zIndex;docFrag.appendChild(this.o);this.refresh=function(){if(isNaN(s.x)||isNaN(s.y)){return false}s.o.style.left=s.x+'px';s.o.style.top=s.y+'px'};this.stick=function(){if(noFixed||(storm.targetElement!==document.documentElement&&storm.targetElement!==document.body)){s.o.style.top=(screenY+scrollY-storm.flakeHeight)+'px'}else if(storm.flakeBottom){s.o.style.top=storm.flakeBottom+'px'}else{s.o.style.display='none';s.o.style.top='auto';s.o.style.bottom='0px';s.o.style.position='fixed';s.o.style.display='block'}};this.vCheck=function(){if(s.vX>=0&&s.vX<0.2){s.vX=0.2}else if(s.vX<0&&s.vX>-0.2){s.vX=-0.2}if(s.vY>=0&&s.vY<0.2){s.vY=0.2}};this.move=function(){var vX=s.vX*windOffset,yDiff;s.x+=vX;s.y+=(s.vY*s.vAmp);if(s.x>=screenX||screenX-s.x<storm.flakeWidth){s.x=0}else if(vX<0&&s.x-storm.flakeLeftOffset<0-storm.flakeWidth){s.x=screenX-storm.flakeWidth-1}s.refresh();yDiff=screenY+scrollY-s.y;if(yDiff<storm.flakeHeight){s.active=0;if(storm.snowStick){s.stick()}else{s.recycle()}}else{if(storm.useMeltEffect&&s.active&&s.type<3&&!s.melting&&Math.random()>0.998){s.melting=true;s.melt()}if(storm.useTwinkleEffect){if(!s.twinkleFrame){if(Math.random()>0.9){s.twinkleFrame=parseInt(Math.random()*20,10)}}else{s.twinkleFrame--;s.o.style.visibility=(s.twinkleFrame&&s.twinkleFrame%2===0?'hidden':'visible')}}}};this.animate=function(){s.move()};this.setVelocities=function(){s.vX=vRndX+rnd(storm.vMaxX*0.12,0.1);s.vY=vRndY+rnd(storm.vMaxY*0.12,0.1)};this.setOpacity=function(o,opacity){if(!opacitySupported){return false}o.style.opacity=opacity};this.melt=function(){if(!storm.useMeltEffect||!s.melting){s.recycle()}else{if(s.meltFrame<s.meltFrameCount){s.meltFrame++;s.setOpacity(s.o,s.meltFrames[s.meltFrame]);s.o.style.fontSize=s.fontSize-(s.fontSize*(s.meltFrame/s.meltFrameCount))+'px';s.o.style.lineHeight=storm.flakeHeight+2+(storm.flakeHeight*0.75*(s.meltFrame/s.meltFrameCount))+'px'}else{s.recycle()}}};this.recycle=function(){s.o.style.display='none';s.o.style.position=(fixedForEverything?'fixed':'absolute');s.o.style.bottom='auto';s.setVelocities();s.vCheck();s.meltFrame=0;s.melting=false;s.setOpacity(s.o,1);s.o.style.padding='0px';s.o.style.margin='0px';s.o.style.fontSize=s.fontSize+'px';s.o.style.lineHeight=(storm.flakeHeight+2)+'px';s.o.style.textAlign='center';s.o.style.verticalAlign='baseline';s.x=parseInt(rnd(screenX-storm.flakeWidth-20),10);s.y=parseInt(rnd(screenY)*-1,10)-storm.flakeHeight;s.refresh();s.o.style.display='block';s.active=1};this.recycle();this.refresh()};this.snow=function(){var active=0,used=0,waiting=0,flake=null,i;for(i=s.flakes.length;i--;){if(s.flakes[i].active===1){s.flakes[i].move();active++}else if(s.flakes[i].active===0){used++}else{waiting++}if(s.flakes[i].melting){s.flakes[i].melt()}}if(active<s.flakesMaxActive){flake=s.flakes[parseInt(rnd(s.flakes.length),10)];if(flake.active===0){flake.melting=true}}};this.mouseMove=function(e){if(!s.followMouse){return true}var x=parseInt(e.clientX,10);if(x<screenX2){windOffset=-windMultiplier+(x/screenX2*windMultiplier)}else{x-=screenX2;windOffset=(x/screenX2)*windMultiplier}};this.createSnow=function(limit,allowInactive){for(var i=0;i<limit;i++){s.flakes[s.flakes.length]=new s.SnowFlake(s,parseInt(rnd(flakeTypes),10));if(allowInactive||i>s.flakesMaxActive){s.flakes[s.flakes.length-1].active=-1}}storm.targetElement.appendChild(docFrag)};this.timerInit=function(){s.timers=(!isWin98?[setInterval(s.snow,s.animationInterval)]:[setInterval(s.snow,s.animationInterval*3),setInterval(s.snow,s.animationInterval)])};this.init=function(){for(var i=0;i<s.meltFrameCount;i++){s.meltFrames.push(1-(i/s.meltFrameCount))}s.randomizeWind();s.createSnow(s.flakesMax);s.events.add(window,'resize',s.resizeHandler);s.events.add(window,'scroll',s.scrollHandler);if(s.freezeOnBlur){if(isIE){s.events.add(document,'focusout',s.freeze);s.events.add(document,'focusin',s.resume)}else{s.events.add(window,'blur',s.freeze);s.events.add(window,'focus',s.resume)}}s.resizeHandler();s.scrollHandler();if(s.followMouse){s.events.add(isIE?document:window,'mousemove',s.mouseMove)}s.animationInterval=Math.max(20,s.animationInterval);s.timerInit()};this.start=function(bFromOnLoad){if(!didInit){didInit=true}else if(bFromOnLoad){return true}if(typeof s.targetElement==='string'){var targetID=s.targetElement;s.targetElement=document.getElementById(targetID);if(!s.targetElement){throw new Error('Snowstorm: Unable to get targetElement "'+targetID+'"')}}if(!s.targetElement){s.targetElement=(!isIE?(document.documentElement?document.documentElement:document.body):document.body)}if(s.targetElement!==document.documentElement&&s.targetElement!==document.body){s.resizeHandler=s.resizeHandlerAlt}s.resizeHandler();s.usePositionFixed=(s.usePositionFixed&&!noFixed);fixedForEverything=s.usePositionFixed;if(screenX&&screenY&&!s.disabled){s.init();s.active=true}};function doStart(){if((this.excludeMobile&&!isMobile)||!this.excludeMobile){window.setTimeout(function(){s.start(true)},20)}s.events.remove(window,'load',doStart)}s.events.add(window,'load',doStart,false);return this}(window,document));