JS1k: The JavaScript code golfing competition

d='  ♪♫♪  ';with(t=(c=document.getElementById('c')).getContext('2d')){w=c.width=512;h=c.height=384;strokeStyle=a='#314';lineWidth=2;font=80+(k='pX iMPaCT');e=textAlign='center';strokeText(c='DESiRE',z=128,z);font=32+k;$=d+'"M'+k+' /w ';p=getImageData(0,0,m=k=z*=2,z).data;Y=Math.random;g=Array;b='Style';r='wemakedemos';$+=b+'" by '+c+d+'release 4 js1k.com'+d+'visit '+c+e+' @ www.'+r+'.nl'+d+'code: Guy Frost / '+c+d+c+': '+r+' since 1990';$+=$;b='fill'+b;textAlign='left';for(i=j=n=e=y=0;y<z;y++)for(x=0;x<z;x++,e+=4)if(p[e]){ g[n]=x+x;g[n+4]=y+y;n+=8}c=createLinearGradient(0,0,0,h);c.addColorStop(1,a);c.addColorStop(0,a='#000');setInterval(function(){if(!(i&255)){for(e=0;e<n;){r=Y()*w-z;s=Y()*w-z;g[e+1]=(e&4?k:m)-g[e]-r-s;g[e+2]=r;g[e+3]=s;e+=4}if(!i){m=Y()*w;k=Y()*h}}t[b]=c;fillRect(0,0,w,h);t[b]=a;fillText($,w-j,h-8);j+=2;p=i<z?1-i/z:(i-z)/z;p*=p;for(e=0;e<n;){t[b]=e<n/2?'#ac0':'#ef2';v=p*p;x=g[e++]+g[e++]*p+g[e++]*v+g[e++]*v*p;y=g[e++]+g[e++]*p+g[e++]*v+g[e++]*v*p;fillRect(x,y,3,3)}i++;i%=w},16)}

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