function checkKontakt(send) {
  var crf = document.send, err = "";

  if (crf.meno.value == "") {
    err += " - jméno a příjmení\n";
  }

  if (crf.tel.value == "") {
    err += " - telefón\n";
  }
  
  if (crf.email.value=="") {
    err += " - email\n";
  }
  else if (window.RegExp) {
    re = new RegExp("^[^.]+(\.[^.]+)*@([^.]+[.])+[a-z]{2,3}");
      if (!re.test(crf.email.value)) {
        err += " - správny tvar emailu\n";
      }
  }
  
  if (crf.ulica.value == "") {
    err += " - ulici\n";
  }

  if (crf.mesto.value == "") {
    err += " - město\n";
  }

  if (crf.psc.value == "") {
    err += " - psč\n";
  } 

  if (crf.termin.value == "") {
    err += " - předpokládaný termín zahájení služby\n";
  } 

  if (crf.dny.value == "") {
    err += " - dny, v kt. chci službu provádět\n";
  }

  if (crf.cas.value == "") {
    err += " - předpokládaný čas\n";
  }   
  
  if (err!="") {
    window.alert("Zapoměli jste napsat:\n" + err);
    /*document.getElementById("loginalert").innerHTML = "<div class=\"winsetrin2\">" + msg + err + "<br><span class=\"winclose\">&nbsp;<a href=\"#\" onclick=\"Hidee('loginalert'); return false\">&nbsp;OK&nbsp;</a>&nbsp;</span></div>";
              Shows('loginalert'); */ 
    return false;
  }
  else {
    return true;
  }
}

function Showsubmenu(CisMenu){
  var menu = document.getElementById("menu"+CisMenu);
  menu.style.visibility= "visible";
}
//vysvieti sa nadpis akurat otvoreneho menu
function MenuSel(cispol){
  var menu = document.getElementById("Nmenu"+cispol);
//menu.style.backgroundColor="#0A1AA9";
  menu.style.color="";
  menu.style.visibility= "visible";
}
//zvyrazni (aktualnu) polozku pod kurzorom
function TabSel(cispol){
//var pol=eval("document.all.polozka"+cispol)
  var pol = document.getElementById("polozka"+cispol);
  pol.style.backgroundColor="#e9e9e9";
  pol.style.color="#000000";
//pol.style.checked.backgroundColor="#9B2461";
}

//zrusi zvyraznenie aktualnej polozky
function TabUnSel(cispol){
//var pol=eval("document.all.polozka"+cispol)
  var pol = document.getElementById("polozka"+cispol);
  pol.style.backgroundColor="";
  pol.style.color="";
//pol.style.checked.backgroundColor="#9B2461";
}

//zrusia sa vsetky vysvietenia nadpisov menu
function MenuUnSel(){
  var i, menu;
  for(i=1; i<=PocetMenu; i++){
  //menu=eval("document.all.Nmenu"+i)
  menu = document.getElementById("Nmenu"+i);
  menu.style.backgroundColor="";
  menu.style.color="";
  menu.style.visibility= "visible";
  }
}

function Hidesubmenu(v)
{
var menu, i, v;

//MenuUnSel(i);

for(i=1; i<=PocetMenu; i++)
{
//menu=eval("document.all.menu"+i);
menu = document.getElementById("menu"+i);
menu.style.visibility="hidden";
}
}

  
// zobrazenie a skrytie okna
  function closewin(name) {
   var div = document.getElementById(name);
   div.style.display="none";
  }
  
  function openwin(name) {
   var div = document.getElementById(name);
   div.style.display="inline";
  }

/* ---------- Newsletter */
  function sendnewstetter() {
   var el = document.newsletter, err= "";
   
    if(el.newslettermeno.value.length < 1 || el.newslettermeno.value == defineval1) {
     document.getElementById('inputboxing1').style.borderColor="red";
     el.newslettermeno.value=defineallert1;
     err += "1";
    }
    
    else if(/^\w+([\.-]?\w+)*@\w+([\.-]?\w+)*(\.\w{2,3})+$/.test(el.newsletteremail.value) == false) {
     document.getElementById('inputboxing').style.borderColor="red";
     el.newsletteremail.value=defineallert;
     err += "1";
    }
    
    else if(el.newslettermesto.value.length < 1 || el.newslettermesto.value == defineval3) {
     document.getElementById('inputboxing3').style.borderColor="red";
     el.newslettermesto.value=defineallert3;
     err += "1";
    }
    
    else if(el.newslettercheck.checked == false) {
     document.getElementById('lcheck').style.color="red";
     err += "1";
    }  

   if(err == "") { return true; }
    else { return false; }
  }

/* ---------- Prihlasenie do kurzu */
  function prihlasenie() {
   var el = document.prihlas, err= "";

   if(el.prenes1.value.length < 4) {
    err += " - " + loginallert1 + "\n";
   }
   
   if(/^\w+([\.-]?\w+)*@\w+([\.-]?\w+)*(\.\w{2,3})+$/.test(el.prenes2.value) == false) {
    err += " - " + loginallert2 + "\n";
   }
   
   if(el.prenes3.value.length < 6) {
    err += " - " + loginallert3 + "\n";
   }
   
   if(el.prenes4.value.length < 2) {
    err += " - " + loginallert4 + "\n";
   }
   
   if(el.prenes5.value.length < 1) {
    err += " - " + loginallert5 + "\n";
   }
   
   if(el.prenes6.value.length < 4) {
    err += " - " + loginallert6 + "\n";
   }

   if(err != "") {
    err = allertname + "\n\n" + err;
    window.alert(err);
    return false;   
   }
    else {
     return true;
    }
  }

/* ---------- Prihlasenie do testovania */
  function prihlasenietest() {
   var el = document.prihlasit, err= "";

   if(el.prenes1.value.length < 4) {
    err += " - " + testlogin1 + "\n";
   }
   
   if(el.prenes2.value.length < 4) {
    err += " - " + testlogin2 + "\n";
   }

   if(err != "") {
    err = allertname + "\n\n" + err;
    window.alert(err);
    return false;   
   }
    else {
     return true;
    }
  }

/* ---------- Registracia do testovania */
  function regtest() {
   var el = document.registrovat, err= "";

   if(el.prenes1.value.length < 4) {
    err += " - " + regtest1 + "\n";
   }
   
   if(el.prenes2.value.length < 4) {
    err += " - " + regtest2 + "\n";
   }
   
   if(el.prenes3.value.length < 4) {
    err += " - " + regtest3 + "\n";
   }
   
   if(el.prenes4.value.length < 4) {
    err += " - " + regtest4 + "\n";
   }
   
   if(el.prenes5.value.length < 4) {
    err += " - " + regtest5 + "\n";
   }
   
   if(el.prenes6.value.length < 4) {
    err += " - " + regtest6 + "\n";
   }   
    else if(/^\w+([\.-]?\w+)*@\w+([\.-]?\w+)*(\.\w{2,3})+$/.test(el.prenes6.value) == false) {
     err += " - " + regtest7 + "\n";
    }
   
   if(el.prenes8.value.length < 6) {
    err += " - " + regtest8 + "\n";
   }
   
   if(el.prenes9.value.length < 4) {
    err += " - " + regtest9 + "\n";
   }
   
   if(el.prenes10.value.length < 4) {
    err += " - " + regtest10 + "\n";
   }
   
   if(el.prenes9.value != el.prenes10.value) {
    err += " - " + regtest11 + "\n";
   }


   if(err != "") {
    err = allertname + "\n\n" + err;
    window.alert(err);
    return false;   
   }
    else {
     return true;
    }
  }

/* ---------- Zistenie zabudnuteho hesla */
  function zabudnuteheslo() {
   var el = document.zistiheslo, err= "";
   
   if(el.prenes1.value.length < 4) {
    err += " - " + heslotest1 + "\n";
   }

   if(err != "") {
    err = allertname + "\n\n" + err;
    window.alert(err);
    return false;   
   }
    else {
     return true;
    }
  }