Pleas help with this script (menu)

for (var g=0; g<=squareAmount ; ++g){
      _root["main"+g+"_mc"].onRelease = function(){
         gotoAndStop(2);

            finalX = this._x;
            finalY = this._y;
            positionX = Stage.width/2;
            positionY = Stage.height -70;
            this.swapDepths(this._parent.getNextHighestDepth ());
            };
      _root["main"+g+"_mc"].onEnterFrame = function() {
            this._x += ((finalX - this._x)/ speed);
            };
   };


   
main0_mc.onEnterFrame = function() {
   if( _root["main"+(squareAmount)+"_mc"]._x == main0_mc._x){
               t=1;
               for (var j=1; j<=squareAmount-1; ++j){
                     _root["main"+j+"_mc"].removeMovieClip();
                     };
   };
   if(t==1){
         logo._alpha += (0-logo._alpha)/(speed*2);
         this._x += ((positionX - this._x)/ speed);
         this._y += ((positionY - this._y)/ speed);
         };
if(main0_mc._y == Stage.height -70){gotoAndStop(2);};