var NrOf  = 6;
var PictNr = null;

var button = new Array(NrOf);
for (i = 0; i <= NrOf; i++) {
  button[i] = new Image(); button[i].src  = "../images/button"+i+".gif";
  button[i] = new Image(); button[i].src  = "../images/button"+i+"over.gif";
  button[i] = new Image(); button[i].src  = "../images/button"+i+"clicked.gif";
}

function overandout(Pict, Dateiname) {
  if (linkeseite.document.images) {
    if (PictNr != Pict) linkeseite.document.images[Pict].src = Dateiname + ".gif";
  }
}

function WechselOnClick(Pict, BildOnClick) {
  if (linkeseite.document.images) {
    if (PictNr != Pict) {
      linkeseite.document.images[Pict].src = BildOnClick + ".gif";
      for (var i = 0; i < NrOf; i++) {
        if (i == Pict) {
          null; continue;
        }
        linkeseite.document.images[i++].src =  "../images/button" + i-- + ".gif";
      }
    }
    PictNr = Pict;
  }
}

function StartButton() {
  linkeseite.document.images[0].src =  "../images/button1clicked.gif";
  PictNr = 0;
}