commit_btn.setToolTipText(
"Commit changes and Redraw the TimeLines Display" );
commit_btn.setMnemonic( KeyEvent.VK_D );
// collapse_btn.setPreferredSize( btn_dim );
commit_btn.addActionListener(
new ActionYaxisTreeCommit( root_window, this,
canvas_vport, y_maps,
row_adjs ) );
// Elminate displaying this button, so user uses ScreenRefresh button
// super.add( commit_btn );