function validate_addFirmaForm(frm) {
  var value = '';
  var errFlag = new Array();
  _qfMsg = '';

  value = frm.elements['values[4]'].value;
  if (value == '' && !errFlag['values[4]']) {
    errFlag['values[4]'] = true;
    _qfMsg = _qfMsg + '\n - Title is mandatory..';
  }
   
  value = frm.elements['values[12]'].value;
  if (value == '' && !errFlag['values[12]']) {
    errFlag['values[12]'] = true;
    _qfMsg = _qfMsg + '\n - Login: Email is mandatory.';
  }

  var regex = /^((\[^\\f\n\r\t\v\b]+\))|([\w\!\#$\%\&'\*\+\-\~\/\^\`\|\{\}]+(\.[\w\!\#$\%\&'\*\+\-\~\/\^\`\|\{\}]+)*))@((\[(((25[0-5])|(2[0-4][0-9])|([0-1]?[0-9]?[0-9]))\.((25[0-5])|(2[0-4][0-9])|([0-1]?[0-9]?[0-9]))\.((25[0-5])|(2[0-4][0-9])|([0-1]?[0-9]?[0-9]))\.((25[0-5])|(2[0-4][0-9])|([0-1]?[0-9]?[0-9])))\])|(((25[0-5])|(2[0-4][0-9])|([0-1]?[0-9]?[0-9]))\.((25[0-5])|(2[0-4][0-9])|([0-1]?[0-9]?[0-9]))\.((25[0-5])|(2[0-4][0-9])|([0-1]?[0-9]?[0-9]))\.((25[0-5])|(2[0-4][0-9])|([0-1]?[0-9]?[0-9])))|((([A-Za-z0-9\-])+\.)+[A-Za-z\-]+))$/;
  if (value != '' && !regex.test(value) && !errFlag['values[12]']) {
    errFlag['values[12]'] = true;
    _qfMsg = _qfMsg + '\n - Login: Email must have correct form.';
  }
  
   value = frm.elements['values[13]'].value;
  if (value == '' && !errFlag['values[13]']) {
    errFlag['values[13]'] = true;
    _qfMsg = _qfMsg + '\n - Login: Heslo is mandatory.';
  } 
 
    value = frm.elements['values[9]'].value;
  if (value == '' && !errFlag['values[9]']) {
    errFlag['values[9]'] = true;
    _qfMsg = _qfMsg + '\n - Description is mandatory.';
  }
  
     value = frm.elements['values[1]'].value;
  if (value == '' && !errFlag['values[1]']) {
    errFlag['values[1]'] = true;
    _qfMsg = _qfMsg + '\n - Kategorie is mandatory.';
  } 
 

      value = frm.elements['values[18]'].value;
  if (value == '' && !errFlag['values[18]']) {
    errFlag['values[18]'] = true;
    _qfMsg = _qfMsg + '\n - Url is mandatory.';
  }      
  
       value = frm.elements['values[19]'].value;
  if (value == '' && !errFlag['values[19]']) {
    errFlag['values[19]'] = true;
    _qfMsg = _qfMsg + '\n - Back Url is mandatory.';
  }

  if (_qfMsg != '') {
    _qfMsg = 'Zadané údaje nejsou v pořádku.' + _qfMsg;
    _qfMsg = _qfMsg + '\nPlease correct these fields.';
    alert(_qfMsg);
    return false;
  }
  return true;
}