public Point CheckTiles(int mouseX, int mouseY, int mButton)
    {
    	int row = FindTileRow(mouseY);
    	int col = FindTileCol(mouseX);
    	
    	Point p = new Point(row, col);
    	
    	if(row != -1 && col != -1)
    	{
		   if (mButton == MouseEvent.BUTTON1)
		   {
			   ChangeTile(row, col);
		   }
    	}
    	
    	return p;	
    }