onbar() function Returns true when theres nothing on the bar #1

i played this game several times, it has a common bug, that prevents the player from doing a right move,
i traced the code with firefox and find out the problem is in the game.js file onbar() function,
there is no pieces on the bar but it returns 1 for barwhite or barblack,
i couldnt find where is it setting them to 1 but im trying to find it out,
does anyone knows about this bug?