+import jalview.util.Platform;
+
+import java.awt.BorderLayout;
+import java.awt.Color;
+import java.awt.Component;
+import java.awt.Dimension;
+import java.awt.Font;
+import java.awt.Graphics;
+import java.awt.Image;
+import java.awt.MediaTracker;
+import java.awt.event.MouseAdapter;
+import java.awt.event.MouseEvent;
+
+import javax.swing.JInternalFrame;
+import javax.swing.JLabel;
+import javax.swing.JLayeredPane;
+import javax.swing.JPanel;
+import javax.swing.JTextPane;