public PackageAddModify(PackagePanel panel, int id) {
		
		parent = panel;
		packageID = id;
		
		// Update the action mode.
		actionMode = "mod";
		if (id < 0) {
			actionMode = "add";
		}
		
		// Initialize the window.
		initGUI();
		
		// Update the heading text.
		lblPackageAddModify.setText("Modify Package");
		if (id < 0) {
			lblPackageAddModify.setText("Add Package");
		}
	}