Drag and rotate problem

programming flash
1

I have this swf that written in AS2
http://www.knowingames.com/test_ik_06.swf

if (stage.mouseX == _lastMouseX && stage.mouseY == _lastMouseY) {
    return;
   }
   var dX:Number = stage.mouseX - _myClip.x;
   var dY:Number = -(stage.mouseY - _myClip.y);
   var angleRad:Number = - (Math.atan2(dY, dX) + Math.atan2(_offsetX, _offsetY));
   _myClip.rotation = angleRad * 180 / Math.PI + 90 ;
   //trace(drizzler.rotation);
   var dxX:Number = (_offsetX*Math.cos(angleRad) - _offsetY*Math.sin(angleRad));
   var dyY:Number = (_offsetX*Math.sin(angleRad) + _offsetY*Math.sin(Math.PI/2 - angleRad));
  
_myClip.x = stage.mouseX - dxX;
   _myClip.y = stage.mouseY - dyY;
   
   _lastMouseX = stage.mouseX;
   _lastMouseY = stage.mouseY;

this _offsetX and _offsetY is where you pressing with the mouse
does anyone have idea why it doesn’t working in AS3?
or have an exmple for rotate and drag phisycs