JS1k: The JavaScript code golfing competition

I=document,q=I.body,F=q.style,ge=I.getElementById("c"),e=ge.getContext("2d"),f=Math,G=f.PI,a=f.sin,d=f.cos,k=f.random,c=1000,F.margin=0;F.overflow="hidden";z=ge.width=innerWidth;v=ge.height=innerHeight;e.fillRect(J=0,0,z,v);R=I=1000;setInterval(function(variable){if((R*R+I*I)>2){K=k();R=k()-1/2;I=k()-1/2;xD=d(2*k()*G)/c;yD=a(2*k()*G)/c;xDD=(d(2*k()*G)/c-xD/2)/c*10;yDD=(a(2*k()*G)/c-yD/2)/c*10;}J++;j=(d(J/100)+1)*G;xD=xD+xDD;yD=yD+yDD;e.fillText(R,10,30);r=~~((d(2*K*G+j)+1)/2*255);g=~~((a(2*K*2*G+j)+1)/2*255);b=~~((-d(2*K*G+j)+1)/2*255);e.fillStyle="rgb("+r+","+g+","+b+")";R=R+xD;I=I+yD;r1=R;i1=I;i=0;while(f.sqrt(r1*r1+i1*i1)<2&&i<100){e.fillRect(r1*z/2+z/2,i1*v/2+v/2,2,2);r2=r1*r1-i1*i1+R;i2=2*r1*i1+I;r1=r2;i1=i2;i++;}e.fillStyle="rgba(0,0,0,0.15)";e.fillRect(0,0,z,v);},1)

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