i found an easy way for this.. to make a second button ,create an invisible square/div.then animate it to it pop infront of the button you clicked when it moves to the second click position, then code it ,so when you click it so when you click the invisible square overtop of the button it will reverse the timeline back to the first position. easy to do with out get code confusion .lol
you can do it with in the symbol or on the timeline..but with in the symbol is best so you don't have invisible buttons popping up in your scene.lol