JPanel centro = new JPanel();
		JLabel logo_centro = new JLabel(new ImageIcon("centro.jpg"));
		centro.setBackground(Color.gray);
		c.weightx = 1;
		c.fill = GridBagConstraints.BOTH;
		c.gridx = 1;
		c.gridy = 0;
		c.insets = new Insets(0,0,0,0);
		centro.setPreferredSize(new Dimension(800, 100));
		centro.add("Center",logo_centro);
		pane.add(centro,c);