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unit Unit1;

interface

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

type
  TForm1 = class(TForm)
    RadioButton1: TRadioButton;
    RadioButton2: TRadioButton;
    procedure RadioButton1Click(Sender: TObject);
    procedure RadioButton2Click(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  Form1: TForm1;

implementation

{$R *.dfm}

procedure TForm1.ImVordergrRdiBtnClick(Sender: TObject);
begin
 form1.FormStyle:=fsStayOnTop
end;

procedure TForm1.NormalRdiBtnClick(Sender: TObject);
begin
 form1.FormStyle:=fsNormal
end;

end.					

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procedure TForm1.Timer1Timer(Sender: TObject);
begin
  Timer1.Interval := 1;
  Application.BringToFront;
end;