middleTagLayout.addWidget(rightTagButton);
middleTagLayout.addWidget(leftTagButton);
middleTagLayout.addSpacerItem(new QSpacerItem(1,1));
QVBoxLayout middleLinkedNotebookLayout = new QVBoxLayout();
middleLinkedNotebookLayout.addSpacerItem(new QSpacerItem(1,1));
middleLinkedNotebookLayout.addWidget(rightLinkedNotebookButton);
middleLinkedNotebookLayout.addWidget(leftLinkedNotebookButton);
middleLinkedNotebookLayout.addSpacerItem(new QSpacerItem(1,1));
QVBoxLayout closeLayout = new QVBoxLayout();