var jsDOM0 = (document.all);
var jsDOM1 = (document.getElementById);
var jsDOM = jsDOM0 || jsDOM1;

function getObj (name) {
    if (typeof name == "object") return name;
    if (jsDOM1) return document.getElementById(name);
    if (jsDOM0) return eval('document.all.'+name);
    else return null;
}

function getObjCSSProp(obj,prop) {
    var x;
    if (obj.style) x=eval("obj.style."+prop); else x=null;
    return x;
}

function setObjCSSProp(obj,prop,val) {
    var x=eval("obj.style."+prop+"='"+val+"'");
    return obj;
}

function getObjDisplayed(obj) {
    var x = getObjCSSProp(obj,'display'); x=(x!='none');
    return x;
}

function setObjDisplayed(obj,show) {
    return setObjCSSProp(obj,'display',(show)?'block':'none');
}



function OnOffObj(name) {
    if (name) {
        var obj = getObj (name);
        submenus = obj.getElementsByTagName("ul")
        for (var i = 0; i<submenus.length; i++) {
            x = getObjDisplayed(submenus[i]);
            y = (x == true ? 0 : 1);
//             hideAllBut(name);
            setObjDisplayed(submenus[i],y);
        }
    }
}

function kontrola(formular) {

  if (formular.zprava.value=="") {
    alert("Vyplňte text zprávy");
    formular.zprava.focus();
    return false;
  }
  else if (window.RegExp) {
    re = new RegExp("^[^@]+@[^.]+\..+$");
    if (!re.test(formular.email.value)) {
      alert("Vyplňte email ve správném formátu");
      formular.email.focus();
      return false;
    }
  }

  else {
    return true;
  }
}

function kontrola_registrace(formular) {
  if (window.RegExp) {
    re = /^([a-zA-Z0-9_\.\-])+\@(([a-zA-Z0-9\-])+\.)+([a-zA-Z0-9]{2,4})+$/;
    if (!re.test(formular.email.value) || formular.email.value=="") {
      alert("Vyplňte email ve správném formátu");
      formular.email.focus();
      return false;
    }
  }
  else {
    return true;
  }
}

function kontrola_vyhledavani(formular) {
  if (formular.vyhledavany_vyraz.value=="") {
    alert("Vyplňte vyhledávaný výraz");
    formular.vyhledavany_vyraz.focus();
    return false;
  }
  else {
    return true;
  }
}

function zobraz(id) {
  document.getElementById(id).style.display = 'block';
}

function skryj(id) {
  document.getElementById(id).style.display = 'none';
}

function zvyrazni(id) {
  var links = document.getElementById('sprava_submenu').childNodes;
  for (var i=0; i<links.length; i++) {
    if (links[i].id == id) {
      links[i].style.backgroundColor = '#0b9ddb';
      links[i].style.color = 'white';
    }
    else if (links[i].id != undefined) {
      links[i].style.backgroundColor = 'white';
      links[i].style.color = '#0b9ddb';
    } 
  }
  
}

function klonuj(name,parent) {
  var input = document.getElementsByName(name);
  var klon = input[0].cloneNode(true);
  klon.value='';
  document.getElementById(parent).appendChild(klon);
}

function zmenit_stav_vypis(id) {
  var elem = document.getElementById('vypis_odberatelu_'+id);
  if (elem.style.display=='none') elem.style.display='block';
  else elem.style.display='none';
}

function zmenit_stav_odberatele(id_parent,checked) {

  var chboxes = document.getElementById('vypis_odberatelu_'+id_parent).childNodes;
  for (var i=0; i<chboxes.length; i++) {
    if (chboxes[i]!=undefined) {
      if (checked) chboxes[i].checked=true;
      else chboxes[i].checked=false;
    }
  }
}