function MenuOver(cislo) {
  menuitem=document.getElementById("submenu"+cislo);
  if(menuitem) menuitem.className=switchOn(menuitem.className);
}

function MenuOut(cislo) {
  menuitem=document.getElementById("submenu"+cislo);
  if(menuitem) menuitem.className=switchOff(menuitem.className);
}

function switchOn(state) {
  return state.replace(/off/i, 'on');
}

function switchOff(state) {
  return state.replace(/on/i, 'off');
}

function emptyFindField() {
  if(document.getElementById("findText").value == '') {
    document.getElementById("findText").value = 'hledaný text';
  } else {
    //alert(document.getElementById("findText").value);
  }
}
function showFaq(num) {
  if(document.getElementById(num).style.display == "block") {
    document.getElementById(num).style.display = "none";
  } else {
    document.getElementById(num).style.display = "block";
  }
  
}