img01 = new Image(); img01.src = "img/minus000000.gif";
img02 = new Image(); img02.src = "img/minusFFFFFF.gif";
img03 = new Image(); img03.src = "img/plus000000.gif";
img04 = new Image(); img04.src = "img/plusFFFFFF.gif";
img05 = new Image(); img05.src = "img/point.gif";

var open_menus = new Array();
var menu_index=0;

function show(kat, uroven, rozbalit){
  if (uroven > 2) uroven = 2;

  var podmenu;
  if (podmenu = document.getElementById(kat)) {
    var visible = (podmenu.style.display!='none');
    var imgname = 'img'+kat;
    if(visible){
      podmenu.style.display='none';
    } else {
      podmenu.style.display='block';
    }

    if (podmenu = document.getElementById(imgname)) {
      if (uroven > 0) barva = "000000";
      else            barva = "000000";
      if(visible)     podmenu.src='img/plus'+barva+'.gif';
      else            podmenu.src='img/minus'+barva+'.gif';
    }
  }
  return false;
}

function show_only(kat){
  var podmenu;
  var imgname = 'img'+kat;
  if (podmenu = document.getElementById(kat)) {
    podmenu.style.display='block';
    if (podmenu = document.getElementById('img'+kat)) {
      podmenu.src = minuso.src;
    }
  }  else {
    if (podmenu = document.getElementById('img'+kat)) {
      podmenu.src = noo.src;
    }
  }
  if (podmenu = document.getElementById('div'+kat)) {
    podmenu.className = 'level_open';
  }
  if (podmenu = document.getElementById('a'+kat)) {
    podmenu.className = 'level_open';
  }
  return false;
}

function hide(kat, uroven){
  var podmenu;
  if (podmenu = document.getElementById(kat)) {
    podmenu.style.display='none';
  }

  if (podmenu = document.getElementById('img'+kat)) {
    if (uroven > 0) barva = "000000";
    else            barva = "000000";
    podmenu.src='img/plus'+barva+'.gif';
    alert("haf");
  }

  return false;
}

var styl_old = 'level_4';

function rollon(kat) {
  if (podmenu = document.getElementById('div'+kat)) {
    styl_old = podmenu.className;
    podmenu.className = 'level_hover';
  }
  if (podmenu = document.getElementById('a'+kat)) {
    podmenu.className = 'level_hover';
  }
}

function rolloff(kat) {
  if (podmenu = document.getElementById('div'+kat)) {
    podmenu.className = styl_old;
  }
  if (podmenu = document.getElementById('a'+kat)) {
    podmenu.className = styl_old;
  }
}


function odeslat(){
        document.forms[0].whattodo.value="send";
        document.forms[0].submit();
}

function smazat(identifikator){
        document.forms[0].whattodo.value="remove "+identifikator;
        document.forms[0].submit();
}

function pridat(identifikator, count){
        document.forms[0].whattodo.value="add "+identifikator+" "+count;
        document.forms[0].submit();
}

function aktualizovat(){
        document.forms[0].whattodo.value="refresh";
        document.forms[0].submit();
}