auto advance option

I a sure there is a simple solution.  I want the user to have the option of switching on or off auto advance.  So I figured a variable called autoAdvance with a default value of false.  When the page loads the first thing queried is if autoAdvance is equal to true.  If it is equal to true the trigger is jump to next slide when the timeline ends.  Otherwise the user has to manually advance using the player's next button.  When the user wants to go back and forth manually, they switch off Auto Advance.  All suggestions welcomed.