Scroll Problem

Hi,

I’m creating and update module for a site I have to re-create, but I’m having trouble with my news scroller.

If I double-click on the scroll arrows it goes wrong, U can see it at http://www.goadesign.be/nieuws.html

The code i’m using is

   scrollDown_mc.onPress = function() {
	var denTellr = 0;
	if (Root_mc._y>-((iTeller-6)*18)) {
	 Root_mc.onEnterFrame = function() {
	  if (denTellr<6) {
	   scrollDown_mc.enabled = false;
	   denTellr++;
	   Root_mc._y = Root_mc._y-3;
	   //trace(denTellr);
	  } else {
	   remove(Root_mc.onEnterFrame);
	  }
	  scrollDown_mc.enabled = true;
	 };
	}
   };
   //
   scrollUp_mc.onPress = function() {
	var denTellr = 0;
	if (Root_mc._y != 0) {
	 Root_mc.onEnterFrame = function() {
	  if (denTellr<6) {
	   scrollUp_mc.enabled = false;
	   denTellr++;
	   Root_mc._y = Root_mc._y+3;
	   //trace(denTellr);
	  } else {
	   remove(Root_mc.onEnterFrame);
	  }
	 };
	}
	scrollUp_mc.enabled = true;
   };
	   

Can somebody help me plz :be: