unit Unit1;

interface

uses
  Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
  Dialogs, StdCtrls, ExtCtrls, jpeg;

type
  TForm1 = class(TForm)
    Image1: TImage;
    Button1: TButton;
    Button2: TButton;
    Button3: TButton;
    Button4: TButton;
    procedure Button1Click(Sender: TObject);
    procedure Button2Click(Sender: TObject);
    procedure Button3Click(Sender: TObject);
    procedure Button4Click(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  Form1: TForm1;

implementation

uses Unit2,Unit3,Unit4;

{$R *.dfm}

procedure TForm1.Button1Click(Sender: TObject);
begin
     form2.Show;
end;

procedure TForm1.Button2Click(Sender: TObject);
begin
    form3.Show;
end;

procedure TForm1.Button3Click(Sender: TObject);
begin
     form4.Show;
end;

procedure TForm1.Button4Click(Sender: TObject);
begin
  close;
end;

end.