http://goo.gl/5xb3pX UI Eraser add-on Mozilla Firefox

UI Eraser 0.1.9

Hide Firefox User Interface.

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Eraser Button
The creator of this nice eraser image is Yusuke Kamiyamane (website).

How to hide the user interface?
1) Left-click the Eraser button to enter design mode. (The button will be placed on the navigation bar on first run.)
2) Hover over any UI on the browser, a popup will appear with the option of hiding it ( - ) if it has an ID.
3) Left-click on the option ( - ) and the UI will be highlighted in green (default).
4) Left-click the Eraser button to return to normal mode.

Note: only works on Firefox Main Browser nodes. The extension will remember these settings and hide the nodes.

How to show the hidden interface again?
Reset Individually
1) Left-click the Eraser button to enter design mode.
2) Hover over a highlighted UI. A popup will appear with the option of resetting it ( + ).
3) Left-click on the option ( + ) and the UI will no longer be highlighted.
4) Left-click the Eraser button to return to normal mode.

Reset All
1) Left-click the Eraser button to enter design mode.
2) Right-click on the Eraser Button.
3) Left-click on the option + Reset [ ].
4) Left-click the Eraser button to return to normal mode.

Highlighter Color Picker 
1) Left-click the Eraser button to enter design mode.
2) Right-click on the Eraser Button.
3) Click on a color to change the highlighter.

Note
- When in design mode, Firefox internal UI customize will not be accessible.
- When the Eraser button is in the menu button ≡ panel, it will be disabled. This is to prevent access to the Firefox internal UI customize.
http://goo.gl/5xb3pX