JS1k: The JavaScript code golfing competition

var m={x:0,y:0},k=new Array(),i,j,h,w,uk=20,u,cl=["#f0f","#f3f","#f6f","#f9f","#fcf","#f0c","#f3c","#f6c","#f9c","#fcc"],M=Math;function R(){return M.random()};it();function it(){h=c.height=w=c.width=500;c.addEventListener("click",kl,false);c.addEventListener("mousemove",mm,false);for(i=0;i<w;i+=uk+1)for(j=0;j<h;j+=uk+1)k.push({x:i,y:j,ax:i,ay:j,ct:0,wr:cl[M.floor(R()*cl.length)]});setInterval(lo,9);}function lo(){a.clearRect(0,0,w,h);for(i in k){a.fillStyle=k[i].wr;if(k[i].ct>0)k[i].ct--;else{if(k[i].x>k[i].ax){k[i].x-=.2;if(k[i].y>k[i].ay)k[i].y-=.2;else k[i].y+=.2;}else{k[i].x+=.2;if(k[i].y>k[i].ay)k[i].y-=.2;else k[i].y+=.2;}}a.font=uk+"pt Calibri";a.fillText("♥",k[i].x,k[i].y);}}function mm(e){m.x=e.layerX;m.y=e.layerY;}function kl(e){for(i in k){j=M.sqrt(M.pow((m.x-k[i].x),2)+M.pow((m.y-k[i].y),2));if(j<50){k[i].ct=100;j+=50;u=M.floor(R()*4);if(u==0){k[i].x+=R()*j;k[i].y+=R()*j;}else if(u==1){k[i].x-=R()*j;k[i].y-=R()*j;}else if(u==2){k[i].x+=R()*j;k[i].y-=R()*j;}else{k[i].x-=R()*j;k[i].y+=R()*j;}}}}

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