function?renderDight?(x,y,num,cxt)?{
	?cxt.fillStyle?=?"#005588";

	?for(var?i?=?0;i<digit[num].length;i++){
	?	for(var?j=0;j<digit[num][i].length;j++){
	?		if(digit[num][i][j]?==?1){
	?			cxt.beginPath();
	?			//第(i,j)個圓的圓心位置：
	?			//CenterX:x?+?j*2*(R+1)+(R+1)
	?			//CenterY:y?+?i*2*(R+1)+(R+1)
	?			cxt.arc(x+j*2*(RADIUS+1)+(RADIUS+1),y+i*2*(RADIUS+1)+(RADIUS+1),RADIUS,0,2*Math.PI);
	?			cxt.closePath();

	?			
	?			cxt.fill();
	?		}
	?	}
	?}?
}