var naviInit;
var clicked;
var anzahl;

mn_out = new Image;
mn_over = new Image;
mn_active = new Image;

function setNavi(z,uvz) {
  mn_out.src= uvz+"images/maske.gif";
  mn_over.src= uvz+"images/maskeBlack.gif";
  mn_active.src= uvz+"images/maskeRed.gif";

  naviInit = true;
  anzahl = z;
  clicked = 2;
  n_c1();
}

function n_over(nummer) {
    if ((naviInit) && (nummer != clicked)) {
      var s = "n" + nummer;
      document.images[s].src = mn_over.src;
    }
}

function n_out(nummer) {
    if ((naviInit) && (nummer != clicked)) {
      var s = "n" + nummer;
      document.images[s].src = mn_out.src;
    }
}

function n_c(nummer) {
    document.forms["frmnavig"].elements[0].value = nummer;
}

function n_c1() {
    nummer = document.forms["frmnavig"].elements[0].value;
    if ((naviInit) && (nummer != clicked)) {
      for (i=1;i<=anzahl; i++) {
        var s = "n" + i;
        if (i==nummer) {
          document.images[s].src = mn_active.src;
        }
        else  {
          document.images[s].src = mn_out.src;
        }
      }
      clicked = nummer;
    }
    window.setTimeout("n_c1()",500);
}