[AS2] Reffering to this from function defined inside class

programming flash
1

Hello fellow kirupians. Time for me again to ask for you help.
I’ll begin with the example code


class className () {
    //constructor
    function className(targetmc,linkId) {
      xxx =  targetmc.attachMovie(linkId,targetmc.getNextHighestDepth());
      xxx.onPress = function () {
          // this here refers to the newly created mc.
         this.startDrag();
         intvl = setInterval(updater,200); // this doesnt work
         // nor does the flowing because this reffers to the mc I press not to the instace of the class
         intvl = setInterval(this.updater,200);
      }
    }
    private function updater() {
        trace("Updating + "+getTimer())
    }
}

My question is how can I set up an interval when I click on a button that is created from within the class.
I need my function updater to keep repeating untill I clear the interval. The only way I can figure out is to give the full path like
this._parent._parent.instanceName.updater inside the setInterval, but although this works I think is just dumb to hardcode the instace name of the class. I could of course try to pass the instance name as a parameter, but I would really love to find out the smart way to do this (by the book).

Thank you for taking your time and reading this.