public void drawPanal(Graphics2D g) {
		g.setColor( new Color(72,83,235) );
		g.fillRect(WIDTH-PANALWIDTH, 0, PANALWIDTH, HEIGHT);
		g.setColor(Color.black);
		int panalBoarder = 10;
		g.fillRect(WIDTH-PANALWIDTH+panalBoarder, panalBoarder, PANALWIDTH-2*panalBoarder, HEIGHT-2*panalBoarder);
		
		g.setColor(Color.white);
		g.setFont( new Font("MONOSPACE", Font.BOLD, 13) );
		g.drawString( String.format("Gravity = %4.2f", gravity), SPACEWIDTH+15, HEIGHT/2+15);
		
		for(PanalElement e : panalElems) {
			if( e.image != null )
				g.drawImage(e.image, e.x, e.y, e.width, e.height, canvas);
		}
		
		if(selectedBox != null) {
			if( selectedBox.getColor().equals(Color.white) ) {
				g.setColor(Color.black);
				g.fillRect(selectedRect.x-2, selectedRect.y-2, selectedRect.width+4, selectedRect.height+4);
			}
			g.setColor( selectedBox.getColor() );
			g.fill( selectedRect );
			g.setColor(Color.black);
			g.drawString(String.format("vx = %6.4f", selectedBox.vx), selectedBoxElem.x+13, selectedBoxElem.y+selectedBoxElem.width+10);
			g.drawString(String.format("vy = %6.4f", selectedBox.vy), selectedBoxElem.x+13, selectedBoxElem.y+selectedBoxElem.width+22);
			g.drawString(String.format("v  = %6.4f", Math.sqrt(selectedBox.vy*selectedBox.vy + selectedBox.vx*selectedBox.vx)),
										selectedBoxElem.x+13, selectedBoxElem.y+selectedBoxElem.width+34);
		}
	}