JS1k: The JavaScript code golfing competition

function mDn(e){a.clearRect(0,0,c.width,c.height),a.fillStyle="black",x=20,a.fillText("P=Pen | E=Rub | /\\=Big P/E | \\/=Small P/E",x,20),a.fillText("R=Red+ T=Red- ["+r+"]",x,40),a.fillText("G=Green+ H=Green- ["+g+"]",x,60),a.fillText("B=Blue+ N=Blue- ["+b+"]",x,80);for(k in dOs)a.fillStyle=dOs[k][5],a.fillRect(dOs[k][1],dOs[k][2],dOs[k][3],dOs[k][4]);hOX=e.offsetX,hOY=e.offsetY,delete dOs.z,dOs.z=["z",hOX,hOY,brS,brS,dC==wh?bl:dC],n=hOX+"_"+hOY,mD&&(dOs[n]=[n,hOX,hOY,brS,brS,dC])}var w=window,brS=2,bl="black",wh="white",rC="black",hOX,hOY,mD=0,dOs={},dC=rC,r=0,g=0,b=0;c.width=w.innerWidth,c.height=w.innerHeight,document.body.style.cursor="none",w.onmousemove=function(e){mDn(e)},w.onmousedown=function(e){mD=1,mDn(e)},w.onkeyup=function(e){k=e.which||e.keyCode,rC="rgb("+r+","+g+","+b+")",38==k&&brS++,40==k&&brS--,82==k&&(r+=10),71==k&&(g+=10),66==k&&(b+=10),84==k&&(r-=10),72==k&&(g-=10),78==k&&(b-=10),80==k&&(dC=rC),69==k&&(rC=wh),dC=rC},w.onmouseup=function(){mD=0}

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

function mDn(e) {
	a.clearRect (0, 0, c.width, c.height);
	a.fillStyle="black";
	x = 20;
	a.fillText("P=Pen | E=Rub | /\\=Big P/E | \\/=Small P/E",x,20);
	a.fillText("R=Red+ T=Red- ["+r+"]",x,40);
	a.fillText("G=Green+ H=Green- ["+g+"]",x,60);
	a.fillText("B=Blue+ N=Blue- ["+b+"]",x,80);
	for(k in dOs) {
		a.fillStyle = dOs[k][5];
		a.fillRect(dOs[k][1],dOs[k][2], dOs[k][3], dOs[k][4]);
	}
	hOX = e.offsetX;
	hOY = e.offsetY;
	delete dOs["z"];
	dOs["z"] = ["z", hOX, hOY, brS, brS, (dC==wh) ? bl: dC];
	n = hOX+"_"+hOY;
	if(mD) dOs[n] = [n, hOX, hOY, brS, brS, dC];
}
var w=window,brS=2, bl="black", wh="white", rC = "black", hOX, hOY, mD = 0,dOs = {},dC=rC,r = 0,g = 0,b = 0;
c.width = w.innerWidth;
c.height = w.innerHeight;
document.body.style.cursor = 'none';
w.onmousemove = function(e){mDn(e)}
w.onmousedown = function(e){mD = 1;mDn(e)}
w.onkeyup = function(e){
	k = e.which || e.keyCode;
	rC="rgb("+r+","+g+","+b+")";
	if(k==38) brS++;
	if(k==40) brS--;
	if(k==82) r+=10;
	if(k==71) g+=10;
	if(k==66) b+=10;
	if(k==84) r-=10;
	if(k==82) g-=10;
	if(k==88) b-=10;
	if(k==80) dC = rC; 
	if(k==69) rC=wh;
	dC=rC;
}
w.onmouseup = function(e) {mD = 0};