unit Vizh1;

interface

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

const
  alf = 'ÁÂ×ÇÄÅ£ÖÚÉÊËÌÍÎÏÐÒÓÔÕÆÈÃÞÛÝßÙØÜÀÑ';//áâ÷çäå³öúéêëìíîïðòóôõæèãþûýÿùøüàñ';

type
  TForm1 = class(TForm)
    Edit1: TEdit;
    Edit2: TEdit;
    Button1: TButton;
    Label1: TLabel;
    Button2: TButton;
    procedure Button2Click(Sender: TObject);
    procedure Button1Click(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  Form1: TForm1;

implementation

{$R *.dfm}

procedure TForm1.Button2Click(Sender: TObject);
begin
  if closequery then close;
end;

procedure TForm1.Button1Click(Sender: TObject);
var
  m,n: byte;
  s: string;
  key,code: string;
  i: integer;
begin
  key:= Edit1.Text;
  code:= Edit2.Text;
  n:= 0; s:= '';
  for m:=1 to length(code) do
  begin
    inc(n); if n>length(key) then n:= 1;
    if code[m]=key[n] then i:= 1 else
    if Pos(code[m],alf)>Pos(key[n],alf) then i:= Pos(code[m],alf) - Pos(key[n],alf) + 1
      else i:= length(alf) - Pos(key[n],alf) + Pos(code[m],alf)+1;
    s:= s+alf[i];
  end;
  Label1.Caption:= s;
end;

end.