function roundCena(cena) {
  ttl = "" + ((Math.round(cena * 10)) / 10);
  dec1 = ttl.substring(ttl.length-3, ttl.length-2);
  dec2 = ttl.substring(ttl.length-2, ttl.length-1);
  if (dec1 != '.') {
    if (dec2 == '.') ttl += "0"; else ttl += ".00";
  }
  p1 = ttl.substring(ttl.length-6, ttl.length);
  p2 = ttl.substring(ttl.length-9, ttl.length-6);
  p3 = ttl.substring(0, ttl.length-9);
  return(p3+" "+p2+" "+p1);
}

function UkazOkno(obr){
  temp = window.open(obr,"newwin","height=400,width=400,scrollbars=1,resizable=1");
  temp.focus();
}

var errfound = false;

function ValidLength(item, len) {
   return (item.length >= len);
}

function trim(s) {
  while ((s.substring(0,1) == ' ') || (s.substring(0,1) == '\n') || (s.substring(0,1) == '\r'))  {
    s = s.substring(1,s.length);
  }
  while ((s.substring(s.length-1,s.length) == ' ') || (s.substring(s.length-1,s.length) == '\n') || (s.substring(s.length-1,s.length) == '\r'))  {
    s = s.substring(0,s.length-1);
  }
  return s;
}

function ValidEmail(item) {
  item = trim(item);
  var reg = '^[_a-zA-Z0-9\.\-]+@[_a-zA-Z0-9\.\-]+\.[a-zA-Z]{2,4}$';
  return (item.match(reg)) ? true : false;
}

function ValidStreet(item) {
  var reg = '^.*[0-9]+.*$';
  return (item.match(reg)) ? true : false;
}

function error(elem, text) {
   if (errfound) return;
   window.alert(text);
   if(elem.type == 'text') elem.select();
   elem.focus();
   errfound = true;
}

function ValidStreet(item) {
  var reg = '^.*[0-9]+.*$';
  return (item.match(reg)) ? true : false;
}