acting like parallax !

Hi all,

I tried to view the content of my stage with a different way which is like parallax

I used the mouse Wheel event and it did great, how ever I still have a problem

when I use the wheel to play the animation it works

but when I keep scrolling the wheel it shows the content without logic and the animation shown as it is unrealistic and breakable

I want a way to make the wheel like seek bar so when I keep scrolling the animation keep playing

that is the code I used to do so, it only works with Firefox

$(window).bind("DOMMouseScroll", function(f){        // adding the event

    var delta = f.originalEvent.detail;                           // knowing if the user is scrolling up or down

       if (delta > 0) {                                                      // if the user scrolls down, play the animation

              duration=sym.getPosition();

              sym.play(duration);

}

       else if (delta < 0){                                              // if the user scroll up, reverse the animation

                     duration=sym.getPosition();

          sym.playReverse();

}

   return true;

});