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(Move your mouse over the
l inks in the menu on the left.
Scroll the window up and down
to see the menu move)
Use the select box in the line above to change and test the animation effect. When you find the effect you like find the line in the code like the one above and change the "transition=" to the desired effect.
(TIP: Once the select box is selected use the up/down arrow keys to change the selection)