InchooSnowflakes=Class.create({initialize:function(options){this.options={flakes:35,color:['#e9f0e0','#d1e8f0','#bbb','#ddd','#fff'],text:'&#x2744',speed:2,size:{'max':50,'min':10}};Object.extend(this.options,options||{});this.elements=[];for(var i=0;i<=this.options.flakes;i++){this.elements[i]=new Element('span').setStyle({position:'absolute',top:'0px',cursor:'default',background:'transparent'}).update(this.options.text);}
document.observe('dom:loaded',this.onDomLoad.bindAsEventListener(this));},onDomLoad:function(){var viewport=document.viewport.getDimensions();this.container=new Element('div',{'id':'InchooSnowflakes'});this.container.setStyle({oveflow:'hidden'});(document.getElementsByTagName('body')[0]).appendChild(this.container);this.elements.each(function(item){this.container.appendChild(item);item.size=(this.random(this.options.size.max,this.options.size.min));Object.extend(item,{cords:0,across:(Math.random()*15),horizontal:(0.03+Math.random()/10),sink:(this.options.speed*0.5),posx:(this.random(viewport.width-item.size)),posy:(this.random(document.body.clientHeight-item.size))});item.setStyle({fontSize:item.size+'px',color:this.options.color[this.random(this.options.color.length)],left:item.posx+'px',top:item.posy+'px',zIndex:'1000'});},this);this.start();},move:function(){var viewport=document.viewport.getDimensions();this.elements.each(function(item){item.cords+=item.horizontal;item.posy+=item.sink;item.setStyle({top:item.posy+'px',left:(item.posx+item.across*Math.sin(item.cords))+'px'});if(item.posy>=document.body.clientHeight-item.size/2||parseInt(item.getStyle('left'))>(viewport.width-3*item.across)){item.posx=this.random(viewport.width-item.size);item.posy=-item.size;}},this);},random:function(max,min){if(!min){return Math.floor(Math.random()*max);}
return Math.floor((Math.random()*(max-min+1))+min);},start:function(){this.pe=new PeriodicalExecuter(this.move.bindAsEventListener(this),0.05);},stop:function(){this.pe.stop();}});