Because of the limitations of most web authoring programs, navigation buttons are usually the same whether it's a rectangle, a rounded rectangle, an ellipse, etc. And they don't overlap.
So I asked myself, WHY?
The buttons shown below and on the WEB file link to separate pop up layers. The mouseover effect for each button is actually on the popup layer. The button on the popup layer could be linked to another page or another link. The Contact button on the mouse over links to an e-mail address.
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