myImage.setStyleName("logo");
SimplePanel logoPanel = new SimplePanel();
logoPanel.add(myImage);
logoPanel.setStyleName("header_panel");
myDockLayoutPanel.addNorth(logoPanel, 10.7);
myDockLayoutPanel.addNorth(new EnvListBox(floorPlan), 2);
SimplePanel footerPanel = new SimplePanel();
footerPanel.setStyleName("header_panel");
myDockLayoutPanel.addSouth(footerPanel, 4);
rootPanel.add(myDockLayoutPanel);
myDockLayoutPanel.add(floorPlan.getCanvas());