JS1k: The JavaScript code golfing competition

for(_='tyle~Math.ZZcos(YeightX0,V,VVU"+=.+"50c.fillRect(f)+.5,()*hd[2]+.25))**2+;i--;)d=r[i]forransm=tion.s~/10",S~="hsl),	=b.offsetZsin(px"%360+%,perspective,s.background="#*(.5*f
(wWidth,hHX,wh=Zsqrt(w*w+h	s=b222q=Zrandom,n=3Vi=n,r=[]=3*w/n=document.createElement("div"	s=dhX=w/(3*n)width=w/4fff"posi="absolute"top="0b.appendChild(d);(p=[],o=Vi=op.push([q*w,q,q]);f=Vl=func{(i=n,t08*Date.now,s=d,A=(i/n+t)%h*3-2.8,e02*t+i/n*2*ZPI,a=e	y=a/3	x=Ya/3)webkitTs.t"matrix3d([x,-yUy,x,-1U1Uw*a+3*w/8,.8+a*.05,A,1].join("))"opacity=A/900+2;(f-005,fx5*Yfy5*b.Origin=*fx+25% (*fy+25)%i=od=p[i],(t(25+*)%)m=wh*0+2,(d[0]-w
xw
x+.25	(d[1]-h
yh
y+.25	m,m	=(+.005)%1;a((t-20)20%,.1)VVw,h	requestAnimaFrame(l)},l;';g=/[^ -TW[-}]/.exec(_);)with(_.split(g))_=join(shift());eval(_)

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

w=b.offsetWidth
h=b.offsetHeight
wh=Math.sqrt(w*w+h*h)
s=b.style
s.background='#222'
q=Math.random

n=30
i=n
r=[] //rectangles	
s.perspective = 3*w/n+'px'
while(i--){ //add divs
	d=r[i]=document.createElement("div") //create div
	s=d.style //style
	s.height=w/(n*3)+'px'
	s.width=w/4+'px'
	s.background="#fff"
	s.position='absolute'
	s.top='0'
	b.appendChild(d)
}

p=[] //particles
o=500
i=o
while(i--) {
	p.push([q()*w,q()*h,q()])
}
f=0
l = function() { //loop
	i=n
	t=Date.now()*.08
	while(i--) {
		
		d=r[i] //get a div
		s=d.style //style
		z=(i*h/n+t)%h*3-h*2.8 //Depth of the track
		e=t*.02+i/n*2*Math.PI //theta
		a=Math.sin(e)
		y=Math.sin(a/3)
		x=Math.cos(a/3)
		s.webkitTransform=s.transform="matrix3d("+[x,-y,0,0,y,x,-1,0,0,1,0,0,w/10*a+w*3/8,h*.8+a*h*.05,z,1].join(',')+")"
		s.opacity = z/900+2
	}
	f-=.005
	fx=Math.cos(f)*.5+.5
	fy=Math.sin(f)*.5+.5
	b.style.perspectiveOrigin = (fx*50+25)+"% "+(fy*50+25)+"%"
	
	i=o
	while(i--){
		d=p[i]
		c.fillStyle='hsl('+t/10%360+',50%,'+(25+d[2]*50)+'%)'
		m=wh*d[2]/100+2
		c.fillRect(
			(d[0]-w*(fx*.5+.25))*d[2]*2+w*(fx*.5+.25),
			(d[1]-h*(fy*.5+.25))*d[2]*2+h*(fy*.5+.25),
			m,m
		)
		d[2]=(d[2]+0.005)%1
	}
	c.fillStyle='hsla('+(t/10-20)%360+',50%,20%,.1)'
	c.fillRect(0,0,w,h)
	requestAnimationFrame(l)
}
l()