<!--
function trim( item ) {
	while( '' + item.value.charAt( item.value.length - 1 ) == ' ' ){
		item.value = item.value.substring( 0, item.value.length - 1 );
	}
}

function checkRequired(item, version, nameCs, nameDe, nameEn) {
	trim( item );
	if( item.value.length == 0) {
		if(version.value == "cs"){
			alert( "Položka " + nameCs + " je povinná" );
			item.focus();
			return 0;
		}
		if(version.value == "de"){
			alert( "Posten  " + nameDe + " ist obligatorisch" );
			item.focus();
			return 0;
		}
		if(version.value == "en"){
			alert( "This item " + nameEn + " is obligatory" );
			item.focus();
			return 0;
		}

	}
	return 1;
}

function contentEmail(item, version){
  var rel = /^[^.]+(\.[^.]+)*@([^.]+[.])+[a-zA-Z]{2,4}$/;

  if( item.value.search(rel) == -1) {
		if(version.value == "cs"){
			alert( "Neplatná e-mailová adresa." );
			item.focus();
			return 0;
		}
		if(version.value == "de"){
			alert( "Das Feld e-mail ist entweder nicht oder falsch ausgefllt.\nBitte ausfllen!" );
			item.focus();
			return 0;
		}
		if(version.value == "en"){
			alert( "Either your e-mail has not been filled in or it has been done wrong.\nPlease fill it in or correct it" );
			item.focus();
			return 0;
		}
	}
	return 1;
}

/* kontrola formulare pro edesilani objednavek*/
function checkOrder(field){
	if (checkRequired (field.datumOd , field.version , "DATUM OD" , "DATUM DER UNTERKUNFT AB" , "DATE OF ACCOMMODATION FROM" ) == 0){
		return false;
	}
	if (checkRequired (field.datumDo , field.version , "DATUM DO" , "DATUM DER UNTERKUNFT BIS" , "DATE OF ACCOMMODATION TO" ) == 0){
		return false;
	}
	if (checkRequired (field.pocet , field.version , "POČET OSOB" , "ANZAHL PERSONEN" , "NUMBER OF PERSONS") == 0){
		return false;
	}
	if (checkRequired (field.jmeno , field.version , "JMÉNO A PŘÍJMENÍ" , "VOR- UND NACHNAME" , "FIRST NAME AND SURNAME" ) == 0){
		return false;
	}
	if (checkRequired (field.email , field.version , "EMAIL" , "EMAIL" , "EMAIL" ) == 0){
		return false;
	}
	if (contentEmail (field.email , field.version) == 0){
		return false;
	}
	if (checkRequired (field.telefon , field.version , "TELEFON" , "TELEFON" , "PHONE" ) == 0){
		return false;
	}
}
//-->