Change the double-click action for window titlebars from maximize (which there is already a button for) to Shade. Shade pulls the window up into the titlebar to free up room on the desktop. To change the double-click setting, do the following:
1. Click the K Menu.
2. Select System Settings.
3. Under Look & Feel, select Window Behavior.
4. Select Window Behavior in the left pane.
5. Click the Titlebar Actions tab.
6. Select Shade from the Titlebar double-click dropdown.
7. Click the Apply button.
8. Close the Window Behavior window.