A Navbar consists of one or more buttons with one or more states applied.  Each state of a
button is usually created using one or more rectangles and a text object.  Each state is
created on a different layer.  The objects are usually grouped per layer and the entire button
across layers is soft grouped.
Xtreme supports 3 different button states.  MouseOff, MouseOver and Selected.  This guide
will show you how to create button bars with a MouseOff and MouseOver state.
MouseOff (Mandatory) 
The display of a button on page load must reside within a layer named MouseOff.   
MouseOver (optional)
The display of a button when you place your mouse pointer over it must reside within a layer named MouseOver
Selected (optional)
The display of a button when you place your mouse pointer over it must reside within a layer named Selected
Button Bars
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