function ukaz10() {
  if (document.getElementById("fak").className == "fak_div_u") {
      document.getElementById("fak").className = "fak_div";
  } else {
      document.getElementById("fak").className = "fak_div_u";
  }
}
function ukaz11() {
  if (document.getElementById("dod").className == "dod_div_u") {
      document.getElementById("dod").className = "dod_div";
  } else {
      document.getElementById("dod").className = "dod_div_u";
  }
}

var menuids=["sidebarmenu1"] //Enter id(s) of each Side Bar Menu's main UL, separated by commas
function initsidebarmenu(){
for (var i=0; i<menuids.length; i++){
  var ultags=document.getElementById(menuids[i]).getElementsByTagName("ul")
    for (var t=0; t<ultags.length; t++){
    ultags[t].parentNode.getElementsByTagName("a")[0].className+=" subfolderstyle"
  if (ultags[t].parentNode.parentNode.id==menuids[i]) //if this is a first level submenu
   ultags[t].style.left=ultags[t].parentNode.offsetWidth+"px" //dynamically position first level submenus to be width of main menu item
  else //else if this is a sub level submenu (ul)
    ultags[t].style.left=ultags[t-1].getElementsByTagName("a")[0].offsetWidth+"px" //position menu to the right of menu item that activated it
    ultags[t].parentNode.onmouseover=function(){
    this.getElementsByTagName("ul")[0].style.display="block"
    }
    ultags[t].parentNode.onmouseout=function(){
    this.getElementsByTagName("ul")[0].style.display="none"
    }
    }
  for (var t=ultags.length-1; t>-1; t--){ //loop through all sub menus again, and use "display:none" to hide menus (to prevent possible page scrollbars
  ultags[t].style.visibility="visible"
  ultags[t].style.display="none"
  }
  }
}
if (window.addEventListener)
window.addEventListener("load", initsidebarmenu, false)
else if (window.attachEvent)
window.attachEvent("onload", initsidebarmenu)

function potvrd() {
if (confirm('Jste si jist(a)?')) { return true; } else { return false;}
}

function getkey(e) {
  var code;
  if (!e) {
    var e = window.event; // nastaveni pro IE
  }
  if (e.keyCode) {
    code = e.keyCode; // IE a Mozilla
  } else {
    if (e.which) {
      code = e.which; // NN4
    }
  }
  return code;
}

function numeric(eX) {
  test=getkey(eX);
  if (test<48 || test>57) {
    return false;
  }
}

function alfanumeric(eX,diacritic) {
  test=getkey(eX);
  set1=(test>32 && test<48);
  set2=(test>57 && test<65);
  set3=(test>90 && test<97);
  if (diacritic == 1) {
    set4=(test>122 && test<127);
  } else {
    set4=(test>122)
  }
  if (set1 || set2 || set3 || set4) {
    return false;
  }
}

function safechars(eX) {
  test=getkey(eX);
  if (test==34 || test==39) {
    false;
  }
}

function AddFavorite(linkObj,addUrl,addTitle)
{
  if (document.all && !window.opera)
  {
    window.external.AddFavorite(addUrl,addTitle);
    return false;
  }
  else if (window.opera && window.print)
  {
    linkObj.title = addTitle;
    return true;
  }
  else if ((typeof window.sidebar == 'object') && (typeof window.sidebar.addPanel == 'function'))
  {
    if (window.confirm('Přidat oblíbenou stránku jako nový panel?'))
    {
      window.sidebar.addPanel(addTitle,addUrl,'');
      return false;
    }
  }
  window.alert('Po potvrzení stiskněte CTRL-D,\nstránka bude přidána k vašim oblíbeným odkazům.');
  return false;
}