var a1 = 0; var a2 = 0; var a3 = 0; var a4 = 0; var a5 = 0; var a6 = 0; var a7 = 0; var a8 = 0;

function nav(x)
{
        if (document.all)
        {
                  switch(x)
                  {
                  case 0:
                   {
                       MLand.style.visibility='hidden';
                       MMelk.style.visibility='hidden';
                       MGarten.style.visibility='hidden';
                       MGrill.style.visibility='hidden';
                       MQuad.style.visibility='hidden';

                   a1 = 0; a2 = 0; a3 = 0; a4 = 0; a5 = 0; a6 = 0; a7 = 0; a8 = 0;
                       break;
                    }
                    case 1:
                   {
                           if  (a1 == 0) {
                       MLand.style.visibility='visible';
                       MMelk.style.visibility='hidden';
                       MGarten.style.visibility='hidden';
                       MGrill.style.visibility='hidden';
                       MQuad.style.visibility='hidden';

                       a1 = 1; a2 = 0; a3 = 0; a4 = 0; a5 = 0; a6 = 0; a7 = 0; a8 = 0;
                       break;}
                               else
                               {MLand.style.visibility='hidden'; a1 = 0; break;}

                    }
                    case 2:
                    {
                            if (a2 == 0) {
                       MLand.style.visibility='hidden';
                       MMelk.style.visibility='visible';
                       MGarten.style.visibility='hidden';
                       MGrill.style.visibility='hidden';
                       MQuad.style.visibility='hidden';

                       a1 = 0; a2 = 1; a3 = 0; a4 = 0; a5 = 0; a6 = 0; a7 = 0; a8 = 0;
                       break;}
                               else
                               {MMelk.style.visibility='hidden'; a2 = 0; break;}

                    }
                    case 3:
                    {
                            if (a3 == 0) {
                       MLand.style.visibility='hidden';
                       MMelk.style.visibility='hidden';
                       MGarten.style.visibility='visible';
                       MGrill.style.visibility='hidden';
                       MQuad.style.visibility='hidden';

                       a1 = 0; a2 = 0; a3 = 1; a4 = 0; a5 = 0; a6 = 0; a7 = 0; a8 = 0;
                       break;}
                               else
                               {MGarten.style.visibility='hidden'; a3 = 0; break;}
                    }
                    case 4:
                    {
                            if (a4 == 0) {
                       MLand.style.visibility='hidden';
                       MMelk.style.visibility='hidden';
                       MGarten.style.visibility='hidden';
                       MGrill.style.visibility='visible';
                       MQuad.style.visibility='hidden';

                       a1 = 0; a2 = 0; a3 = 0; a4 = 1; a5 = 0; a6 = 0; a7 = 0; a8 = 0;
                       break;}
                               else
                               {MGrill.style.visibility='hidden'; a4 = 0; break;}
                  }
                 case 5:
                 {
                         if (a5 == 0) {
                 MLand.style.visibility='hidden';
                       MMelk.style.visibility='hidden';
                       MGarten.style.visibility='hidden';
                       MGrill.style.visibility='hidden';
                       MQuad.style.visibility='visible';

                       a1 = 0; a2 = 0; a3 = 0; a4 = 0; a5 = 1; a6 = 0; a7 = 0; a8 = 0;
                       break;}
                               else
                               {MQuad.style.visibility='hidden'; a5 = 0; break;}
                 }
                 case 6:
                 {
                         if (a6 == 0) {
                 MLand.style.visibility='hidden';
                       MMelk.style.visibility='hidden';
                       MGarten.style.visibility='hidden';
                       MGrill.style.visibility='hidden';
                       MQuad.style.visibility='hidden';

                       a1 = 0; a2 = 0; a3 = 0; a4 = 0; a5 = 0; a6 = 1; a7 = 0; a8 = 0;
                       break;}
                               else
                               {MKinder.style.visibility='hidden'; a6 = 0; break;}
                       }
                case 7:
                 {
                         if (a7 == 0) {
                 MLand.style.visibility='hidden';
                       MMelk.style.visibility='hidden';
                       MGarten.style.visibility='hidden';
                       MGrill.style.visibility='hidden';
                       MQuad.style.visibility='hidden';

                       a1 = 0; a2 = 0; a3 = 0; a4 = 0; a5 = 0; a6 = 0; a7 = 1; a8 = 0;
                       break;}
                               else
                               {MTermine.style.visibility='hidden'; a7 = 0; break;}
                       }
                       case 8:
                 {
                         if (a8 == 0) {
                 MLand.style.visibility='hidden';
                       MMelk.style.visibility='hidden';
                       MGarten.style.visibility='hidden';
                       MGrill.style.visibility='hidden';
                       MQuad.style.visibility='hidden';

                       a1 = 0; a2 = 0; a3 = 0; a4 = 0; a5 = 0; a6 = 0; a7 = 0; a8 = 1;
                       break;}
                               else
                               {MUntern.style.visibility='hidden'; a8 = 0; break;}
                       }
          }
        }
        else if (document.getElementById)
        {
                switch(x)
                  {
                  case 0:
                   {
                       document.getElementById("MLand").style.visibility='hidden';
                       document.getElementById("MMelk").style.visibility='hidden';
                       document.getElementById("MGarten").style.visibility='hidden';
                       document.getElementById("MGrill").style.visibility='hidden';
                       document.getElementById("MQuad").style.visibility='hidden';
                       document.getElementById("MKinder").style.visibility='hidden';
                       document.getElementById("MTermine").style.visibility='hidden';
                       document.getElementById("MUntern").style.visibility='hidden';
                       a1 = 0; a2 = 0; a3 = 0; a4 = 0; a5 = 0; a6 = 0; a7 = 0; a8 = 0;
                       break;
                       }
                    case 1:
                   {
                           if  (a1 == 0) {
                       document.getElementById("MLand").style.visibility='visible';
                       document.getElementById("MMelk").style.visibility='hidden';
                       document.getElementById("MGarten").style.visibility='hidden';
                       document.getElementById("MGrill").style.visibility='hidden';
                       document.getElementById("MQuad").style.visibility='hidden';
                       document.getElementById("MKinder").style.visibility='hidden';
                       document.getElementById("MTermine").style.visibility='hidden';
                       document.getElementById("MUntern").style.visibility='hidden';
                       a1 = 1; a2 = 0; a3 = 0; a4 = 0; a5 = 0; a6 = 0; a7 = 0; a8 = 0;
                       break;}
                               else
                               {document.getElementById("MLand").style.visibility='hidden'; a1 = 0; break;}
                    }
                    case 2:
                    {
                            if (a2 == 0) {
                       document.getElementById("MLand").style.visibility='hidden';
                       document.getElementById("MMelk").style.visibility='visible';
                       document.getElementById("MGarten").style.visibility='hidden';
                       document.getElementById("MGrill").style.visibility='hidden';
                       document.getElementById("MQuad").style.visibility='hidden';
                       document.getElementById("MKinder").style.visibility='hidden';
                       document.getElementById("MTermine").style.visibility='hidden';
                       document.getElementById("MUntern").style.visibility='hidden';
                       a1 = 0; a2 = 1; a3 = 0; a4 = 0; a5 = 0; a6 = 0; a7 = 0; a8 = 0;
                       break;}
                               else
                               {document.getElementById("MMelk").style.visibility='hidden'; a2 = 0; break;}
                    }
                    case 3:
                    {
                            if (a3 == 0) {
                       document.getElementById("MLand").style.visibility='hidden';
                       document.getElementById("MMelk").style.visibility='hidden';
                       document.getElementById("MGarten").style.visibility='visible';
                       document.getElementById("MGrill").style.visibility='hidden';
                       document.getElementById("MQuad").style.visibility='hidden';
                       document.getElementById("MKinder").style.visibility='hidden';
                       document.getElementById("MTermine").style.visibility='hidden';
                       document.getElementById("MUntern").style.visibility='hidden';
                       a1 = 0; a2 = 0; a3 = 1; a4 = 0; a5 = 0; a6 = 0; a7 = 0; a8 = 0;
                       break;}
                               else
                               {document.getElementById("MGarten").style.visibility='hidden'; a3 = 0; break;}
                    }
                    case 4:
                    {
                            if (a4 == 0) {
                       document.getElementById("MLand").style.visibility='hidden';
                       document.getElementById("MMelk").style.visibility='hidden';
                       document.getElementById("MGarten").style.visibility='hidden';
                       document.getElementById("MGrill").style.visibility='visible';
                       document.getElementById("MQuad").style.visibility='hidden';
                       document.getElementById("MKinder").style.visibility='hidden';
                       document.getElementById("MTermine").style.visibility='hidden';
                       document.getElementById("MUntern").style.visibility='hidden';
                       a1 = 0; a2 = 0; a3 = 0; a4 = 1; a5 = 0; a6 = 0; a7 = 0; a8 = 0;
                       break;}
                               else
                               {document.getElementById("MGrill").style.visibility='hidden'; a4 = 0; break;}
                }
                case 5:
                    {
                            if (a5 == 0) {
                       document.getElementById("MLand").style.visibility='hidden';
                       document.getElementById("MMelk").style.visibility='hidden';
                       document.getElementById("MGarten").style.visibility='hidden';
                       document.getElementById("MGrill").style.visibility='hidden';
                       document.getElementById("MQuad").style.visibility='visible';
                       document.getElementById("MKinder").style.visibility='hidden';
                       document.getElementById("MTermine").style.visibility='hidden';
                       document.getElementById("MUntern").style.visibility='hidden';
                       a1 = 0; a2 = 0; a3 = 0; a4 = 0; a5 = 1; a6 = 0; a7 = 0; a8 = 0;
                       break;}
                               else
                               {document.getElementById("MQuad").style.visibility='hidden'; a5 = 0; break;}
                }
                case 6:
                    {
                            if (a6 == 0) {
                       document.getElementById("MLand").style.visibility='hidden';
                       document.getElementById("MMelk").style.visibility='hidden';
                       document.getElementById("MGarten").style.visibility='hidden';
                       document.getElementById("MGrill").style.visibility='hidden';
                       document.getElementById("MQuad").style.visibility='hidden';
                       document.getElementById("MKinder").style.visibility='visible';
                       document.getElementById("MTermine").style.visibility='hidden';
                       document.getElementById("MUntern").style.visibility='hidden';
                       a1 = 0; a2 = 0; a3 = 0; a4 = 0; a5 = 0; a6 = 1; a7 = 0; a8 = 0;
                       break;}
                               else
                               {document.getElementById("MKinder").style.visibility='hidden'; a6 = 0; break;}
                }
                case 7:
                    {
                            if (a7 == 0) {
                       document.getElementById("MLand").style.visibility='hidden';
                       document.getElementById("MMelk").style.visibility='hidden';
                       document.getElementById("MGarten").style.visibility='hidden';
                       document.getElementById("MGrill").style.visibility='hidden';
                       document.getElementById("MQuad").style.visibility='hidden';
                       document.getElementById("MKinder").style.visibility='hidden';
                       document.getElementById("MTermine").style.visibility='visible';
                       document.getElementById("MUntern").style.visibility='hidden';
                       a1 = 0; a2 = 0; a3 = 0; a4 = 0; a5 = 0; a6 = 0; a7 = 1; a8 = 0;
                       break;}
                               else
                               {document.getElementById("MTermine").style.visibility='hidden'; a7 = 0; break;}
                }
                case 8:
                    {
                            if (a8 == 0) {
                       document.getElementById("MLand").style.visibility='hidden';
                       document.getElementById("MMelk").style.visibility='hidden';
                       document.getElementById("MGarten").style.visibility='hidden';
                       document.getElementById("MGrill").style.visibility='hidden';
                       document.getElementById("MQuad").style.visibility='hidden';
                       document.getElementById("MKinder").style.visibility='hidden';
                       document.getElementById("MTermine").style.visibility='hidden';
                       document.getElementById("MUntern").style.visibility='visible';
                       a1 = 0; a2 = 0; a3 = 0; a4 = 0; a5 = 0; a6 = 0; a7 = 0; a8 = 1;
                       break;}
                               else
                               {document.getElementById("MUntern").style.visibility='hidden'; a8 = 0; break;}
                }
            }
        }
        else
        {
                alert ("Bitte benutzen Sie den Internet Explorer ab Version 5 oder Netscape ab Version 6");
        }
}

function spfeil(x)
{
        if (document.all)
        {
                switch(x)
                {
                        case 1:
                        {
                                pfeil1.style.visibility='visible';
                                  break;
                          }
                        case 2:
                        {
                                pfeil2.style.visibility='visible';
                                  break;
                          }
                        case 3:
                        {
                                pfeil3.style.visibility='visible';
                                  break;
                                  }
                        case 4:
                        {
                                pfeil4.style.visibility='visible';
                                  break;
                          }
                          case 5:
                        {
                                pfeil5.style.visibility='visible';
                                  break;
                          }
                          case 6:
                        {
                                pfeil6.style.visibility='visible';
                                  break;
                          }
                          case 7:
                        {
                                pfeil7.style.visibility='visible';
                                  break;
                          }
                          case 8:
                        {
                                pfeil8.style.visibility='visible';
                                  break;
                          }
                }
        }
        else if (document.getElementById)
        {
                switch(x)
                {
                        case 1:
                        {
                                document.getElementById("pfeil1").style.visibility='visible';
                                  break;
                          }
                        case 2:
                        {
                                document.getElementById("pfeil2").style.visibility='visible';
                                  break;
                          }
                        case 3:
                        {
                                document.getElementById("pfeil3").style.visibility='visible';
                                  break;
                                  }
                        case 4:
                        {
                                document.getElementById("pfeil4").style.visibility='visible';
                                  break;
                          }
                          case 5:
                        {
                                document.getElementById("pfeil5").style.visibility='visible';
                                  break;
                          }
                          case 6:
                        {
                                document.getElementById("pfeil6").style.visibility='visible';
                                  break;
                          }
                          case 7:
                        {
                                document.getElementById("pfeil7").style.visibility='visible';
                                  break;
                          }
                          case 8:
                        {
                                document.getElementById("pfeil8").style.visibility='visible';
                                  break;
                          }
                }
        }
}

function hpfeil(x)
{
        if (document.all)
        {
                switch(x)
                {
                        case 1:
                        {
                                pfeil1.style.visibility='hidden';
                                  break;
                          }
                        case 2:
                        {
                                pfeil2.style.visibility='hidden';
                                  break;
                          }
                        case 3:
                        {
                                pfeil3.style.visibility='hidden';
                                  break;
                          }
                        case 4:
                        {
                                pfeil4.style.visibility='hidden';
                                  break;
                          }
                          case 5:
                        {
                                pfeil5.style.visibility='hidden';
                                  break;
                          }
                          case 6:
                        {
                                pfeil6.style.visibility='hidden';
                                  break;
                          }
                          case 7:
                        {
                                pfeil7.style.visibility='hidden';
                                  break;
                          }
                          case 8:
                        {
                                pfeil8.style.visibility='hidden';
                                  break;
                          }
                }
        }
        else if (document.getElementById)
        {
                switch(x)
                {
                        case 1:
                        {
                                document.getElementById("pfeil1").style.visibility='hidden';
                                  break;
                          }
                        case 2:
                        {
                                document.getElementById("pfeil2").style.visibility='hidden';
                                  break;
                          }
                        case 3:
                        {
                                document.getElementById("pfeil3").style.visibility='hidden';
                                  break;
                                  }
                        case 4:
                        {
                                document.getElementById("pfeil4").style.visibility='hidden';
                                  break;
                          }
                          case 5:
                        {
                                document.getElementById("pfeil5").style.visibility='hidden';
                                  break;
                          }
                          case 6:
                        {
                                document.getElementById("pfeil6").style.visibility='hidden';
                                  break;
                          }
                          case 7:
                        {
                                document.getElementById("pfeil7").style.visibility='hidden';
                                  break;
                          }
                          case 8:
                        {
                                document.getElementById("pfeil8").style.visibility='hidden';
                                  break;
                          }
                }
        }
}