/*form_pruefen.js
* by Thorsten Ruppenstein. v2.1
* 02.03.2005	Fehler bei "nid" und "aid" beseitigt (Überprüfung auf NULL reichte nicht aus)
*		Erweiterung um Zeitfeld hh:mm
* 08.06.2005	Fehler bei parseInt(x) behoben (führende Null); jetzt: parseInt(x, 10)
* 27.09.2005	Erweiterung um oid's ("Optionsfelder")
* 05.10.2005	Erweiterung um Parameter init_ok, init_fehlertext ("Einbindung" vorgeschalteter Prüfungen); 
*               vgl. Travelprotect.de
* 10.10.2005	Erweiterung:  Es werden nur Felder geprüft, die auch sichtbar sind.
* 28.02.2007    Erweiterung um pid 64 Prüfen auf E-Mail-Adresse
*
* !!! Spezielle Anpassung (Datum: String "TT.MM.JJJJ" wird als leer interpretiert)
*
* 17.08.2006	Fehler: bspw. !flag_sid[el_sid], Lösung verwende "1" als init-Wert und "2" als Flag
*	
*/
//Rückgabe: TRUE oder FALSE

//IE 7/8 polyfill der String.trim Funktion
if (!String.prototype.trim) {
  String.prototype.trim = function () {
    return this.replace(/^\s+|\s+$/g, '');
  };
}


function pruefen(form, init_ok, init_fehlertext){
	
	ok = true;

	fehlertext = "FEHLER BEI DER EINGABE\n\nFolgende Fehler sind aufgetreten:\n";
	
	if (!init_ok) {
		if (init_fehlertext) {
			fehlertext += init_fehlertext;
			ok = false;
		}
	}
	
	//Felder prüfen
	/* pid's (kombinierbar, z.Bsp. : 1+2=3)
	*	1	Feld UNTER KEINEN UMSTÄNDEN LEER
	*	2	Feld positive ganze Zahl (>=0)
	*	4	Feld muss Datumsformat TT.MM.JJJJ haben oder leer
	*	8	checkbox: mindestens eins ausgewählt
	*	16	select: mindestens eins ausgewählt
	*	32	Feld muss Uhrzeit sein HH[:|.]MM oder leer
	*	64	Feld muss E-Mail-Adresse sein w.+[@]w.+[.]w.+ oder leer
	*	128	Feld muss gültige IBAN sein
	*/
	
	/* aid's
	*	bei gleichem Wert muss mindestens eins grösser 0 sein (verwenden mit pid=2)
	*/
	
	/* oid's
	*	wie aid's, jedoch speziell für Radiobuttons (Optionsfelder)
	
	/* sid's
	*	bei gleichem Wert müssen die betreffenden Felder auch den gleichen Inhalt haben
	*/
	
	/* nid's
	*	bei gleichem Wert dürfen nicht alle betreffenden leer sein
	*/
	
	flag_nid = new Array();
	flag_message_nid = new Array();
	
	flag_aid = new Array();
	flag_message_aid = new Array();
	
	flag_oid = new Array();
	flag_message_oid = new Array();
	
	flag_sid = new Array();
	flag_value_sid = new Array();
	flag_message_sid = new Array();
	
	for (i=0; i<form.length; i++){
		el = form.elements[i];
		
		if (ist_sichtbar(el)) {
		
		var el_pid;
		el_pid = el.getAttribute("pid");
		var el_aid;
		el_aid = el.getAttribute("aid");
		var el_sid;
		el_sid = el.getAttribute("sid");
		var el_nid;
		el_nid = el.getAttribute("nid");
		var el_oid;
		el_oid = el.getAttribute("oid");
		
		var el_message;
		el_message = el.getAttribute("message");
	
		if (el_oid>0) {
			if (flag_oid[el_oid]==null || !flag_oid[el_oid]) {
				flag_oid[el_oid] = 1;
				flag_message_oid[el_oid] = el_message;
			}
			
			if (getOptionValue(form[el.name])>0) {
				flag_oid[el_oid] = 2;
			}
		}
	
		if (el_aid>0) {
			
			if (flag_aid[el_aid]==null || !flag_aid[el_aid]) {
				flag_aid[el_aid] = 1;
				flag_message_aid[el_aid] = el_message;
			}
			if (el.value>0) {
				flag_aid[el_aid] = 2;
			}
		}

		if (el_sid>0) {
			
			if (flag_sid[el_sid]==null || !flag_sid[el_sid]) {
				flag_sid[el_sid] = 1;
				flag_message_sid[el_sid] = el_message;
				flag_value_sid[el_sid] = el.value;
				
			}
			if (el.value!=flag_value_sid[el_sid]) {
				flag_sid[el_sid] = 2;
				
			}
			
			
		}
		
		if (el_nid>0) {			
			if (flag_nid[el_nid]==null || !flag_nid[el_nid]) {
				flag_nid[el_nid] = 1;
				flag_message_nid[el_nid] = el_message;
			}
			
			if (el.value!=""){
				flag_nid[el_nid] = 2;
				
			}
		}
		
		if (el_pid & 1) {
			if (el.value.trim()=="" || el.value == "TT.MM.JJJJ") {
				ok = false;
				fehlertext += "- Das Feld " + el_message + " darf nicht leer sein.\n";
			}
		}
		
		if (el_pid & 128) {
			if (IBAN.isValid(el.value)==false && el.value.length>0) {
				ok = false;
				fehlertext += "- Das Feld " + el_message + " enthält keine gültige IBAN.\n";
			}
		}
		
		if (el_pid & 2) {
			if(parseInt(el.value, 10)!=el.value || parseInt(el.value, 10)<0) {
				ok = false;
				fehlertext += "- Das Feld " + el_message + " darf nur aus Ziffern (0-9) bestehen.\n";
			}
		}
		
		if (el_pid & 32) {
			if (el.value.length>0) {
				
				var AusdruckNum = /^(\d{1,2})$/
				
				if (AusdruckNum.test(el.value)==true) {
					var ErgebnisNum = AusdruckNum.exec(el.value);
					var stundeNum = parseInt(RegExp.$1, 10);
					var stunde_okNum = true;
					if (stundeNum<0 || stundeNum>24) stunde_okNum = false;
					
					if (stunde_okNum) {
						//ersetze 24 durch 00
						if (stundeNum==24) {
							stundeNum=0;
						}
						//bringe die Eingabe auf das passende Format (Mit Nullen auffüllen)
						str_hNum = "" + stundeNum;
						str_mNum = "0";
						if(str_hNum.length<2) str_hNum = "0" + str_hNum;
						if(str_mNum.length<2) str_mNum = "0" + str_mNum;
						el.value = str_hNum + ":" + str_mNum;
					}
					else {
						ok = false;
						fehlertext += "- Das Feld " + el_message + " muss im Format HH:MM sein.";
						if (!stunde_okNum) fehlertext += "(Fehler bei Stunde)";
						fehlertext += "\n";
					}
					
				}
				
				
				var Ausdruck = /^(\d{1,2})[:|.](\d{1,2})$/
				if (Ausdruck.test(el.value)==false) {
					ok = false;
					fehlertext += "- Das Feld " + el_message + " muss im Format HH:MM sein.\n";
				}
				else {
					var Ergebnis = Ausdruck.exec(el.value);
					
					var stunde = parseInt(RegExp.$1, 10)
					var minute = parseInt(RegExp.$2, 10)
					var stunde_ok = true;
					var minute_ok = true;
					
					if (stunde<0 || stunde>24) stunde_ok = false;
					
					if (minute<0 || minute>59) minute_ok = false;
					
					if (stunde_ok && minute_ok) {
						//ersetze 24 durch 00
						if (stunde==24) {
							stunde=0;
						}
						//bringe die Eingabe auf das passende Format (Mit Nullen auffüllen)
						str_h = "" + stunde;
						str_m = "" + minute;
						if(str_h.length<2) str_h = "0" + str_h;
						if(str_m.length<2) str_m = "0" + str_m;
						el.value = str_h + ":" + str_m;
					}
					else {
						ok = false;
						fehlertext += "- Das Feld " + el_message + " muss im Format HH:MM sein.";
						if (!minute_ok && stunde_ok) fehlertext += "(Fehler bei Minute)";
						if (!minute_ok && !stunde_ok) fehlertext += "(Fehler bei Stunde und Minute)";
						if (minute_ok && !stunde_ok) fehlertext += "(Fehler bei Stunde)";
						fehlertext += "\n";
					}
				}
				
			}
		}
		if (el_pid & 64) {
			if (el.value.length>0) {
			     /* 04.12.2012: Änderung mn - nach dem @ können mehrere Punkte vorkommen */   
				//var strReg = "^([a-zA-Z0-9_\.\-])+\@([a-zA-Z0-9\-])+\.([a-zA-Z0-9]{2,4})+$";
				var strReg = "^[_a-zA-Z0-9-_]+(\.[_a-zA-Z0-9-_]+)*@[a-zA-Z0-9-_]+(\.[a-zA-Z0-9-_]+)*(\\.[a-zA-Z]{2,4})$";
				var regex = new RegExp(strReg);
				if (regex.test(el.value)==false) {
					ok = false;
					fehlertext += "- Das Feld " + el_message + " muss im Format myname@provider.com sein.\n";
				}
			}
		}
		
		if (el_pid & 4) {
			if (el.value.length>0 && el.value != "TT.MM.JJJJ") {
			
				var Ausdruck = /^(\d{1,2})\.(\d{1,2})\.\d{4}$/
				if (Ausdruck.test(el.value)==false) {
					ok = false;
					fehlertext += "- Das Feld " + el_message + " muss im Format TT.MM.JJJJ sein.\n";
				}
				else {
					var Ergebnis = Ausdruck.exec(el.value);
					
					var tag = parseInt(RegExp.$1, 10);
					var monat = parseInt(RegExp.$2, 10);
					
					switch(monat) {
					// 31 Tage
						case 1:
						case 3:
						case 5:
						case 7:
						case 8:
						case 10:
						case 12:
							if ((tag<1) || (tag>31)) {
								ok = false;
								fehlertext += "- Das Feld " + el_message + " muss im Format TT.MM.JJJJ sein. (Tag ung\u00fcltig)\n";
							}
							break;
							
					// 30 Tage
						case 4:
						case 6:
						case 9:
						case 11:
							if ((tag<1) || (tag>30)) {
								ok = false;
								fehlertext += "- Das Feld " + el_message + " muss im Format TT.MM.JJJJ sein. (Tag ung\u00fcltig: " + tag + ")\n";
							}
							break;						
						
					//Februar maximal 29
						case 2:
							if ((tag<1) || (tag>29)) {
								ok = false;
								fehlertext += "- Das Feld " + el_message + " muss im Format TT.MM.JJJJ sein. (Tag ung\u00fcltig)\n";
							}
							break;
						default:
							ok = false;
							fehlertext += "- Das Feld " + el_message + " muss im Format TT.MM.JJJJ sein. (Monat ung\u00fcltig)\n";
							break;
					}
					
				}
			}
		}
		if (el_pid & 8) {
			if (form[el.name].length>0) {
				zaehler = 0;
				for (k = 0 ; k < form[el.name].length; k++){
					if (form[el.name][k].checked) zaehler = zaehler + 1;
				}
				if(zaehler==0) {
					ok = false;
					fehlertext += "- Bei " + el_message + " muss mindestens eine Alternative gew\u00e4hlt sein.\n";
				}
			}
			else {
				if (!(form[el.name].checked)) {
					ok = false;
					fehlertext += "- Das Feld " + el_message + " muss angeklickt sein.\n";
				}
			}
		}
		if (el_pid & 16) {
			if (el.selectedIndex==-1){
				ok = false;
				fehlertext += "- Bei " + el_message + " muss mindestens eine Alternative gew\u00e4hlt sein.\n";
			}
		}
		
		} // ist_sichtbar?
	}//ENDE FOR
	
	
	for (l=0; l<flag_nid.length; l++) {
		if (flag_nid[l]==1) {
			fehlertext += "- Die Felder " + flag_message_nid[l]+ " d\u00fcrfen nicht alle leer sein.\n";
			ok = false;
		}
	}
	
	for (n=0; n<flag_aid.length; n++) {
		if (flag_aid[n]==1) {
			fehlertext += "- Die Felder " + flag_message_aid[n]+ " d\u00fcrfen nicht alle 0 sein.\n";
			ok = false;
		}
	}
	
	for (n=0; n<flag_oid.length; n++) {
		if (flag_oid[n]==1) {
			fehlertext += "- " + flag_message_oid[n]+ "\n";
			ok = false;
		}
	}
	
	for (m=0; m<flag_sid.length; m++) {
		if (flag_sid[m]==2) {
			fehlertext += "- Die Felder " + flag_message_sid[m]+ " m\u00fcssen den gleichen Inhalt haben.\n";
			ok = false;
		}
	}
	
	
	//Abschiscken ODER Fehlermeldung
	if (ok) {
		return true;
	}
	else {
		alert(fehlertext);
		return false;
	}
}

function getOptionValue(rObj) {
	for (var i=0; i<rObj.length; i++) if (rObj[i].checked) return rObj[i].value;
    return false;
}

function ist_sichtbar(el){
	if (el.parentNode) {
		if (el.parentNode.style && el.parentNode.style.display) {
			switch(el.parentNode.style.display){
			
			//Elternelement unsichtbar (nur wenn unsichtbar, ist der Fall klar und es kann abgebrochen werden)
			case "none":
				return false
				break;
			//nichts von beiden -> bei Grossvater weitermachen
			default:
				return ist_sichtbar(el.parentNode);
				break;
			}
		}
		else {
			return ist_sichtbar(el.parentNode);
		}
	}
	//keine Eltern mehr
	else return true;
}

// **************************************************************************************************************************
//IBAN-Modul von https://www.npmjs.org/package/iban vom 21.02.2013

(function(exports){

    // Array.prototype.map polyfill
    // code from https://developer.mozilla.org/en-US/docs/JavaScript/Reference/Global_Objects/Array/map
    if (!Array.prototype.map){
        Array.prototype.map = function(fun /*, thisArg */){
            "use strict";

            if (this === void 0 || this === null)
                throw new TypeError();

            var t = Object(this);
            var len = t.length >>> 0;
            if (typeof fun !== "function")
                throw new TypeError();

            var res = new Array(len);
            var thisArg = arguments.length >= 2 ? arguments[1] : void 0;
            for (var i = 0; i < len; i++)
            {
                // NOTE: Absolute correctness would demand Object.defineProperty
                //       be used.  But this method is fairly new, and failure is
                //       possible only if Object.prototype or Array.prototype
                //       has a property |i| (very unlikely), so use a less-correct
                //       but more portable alternative.
                if (i in t)
                    res[i] = fun.call(thisArg, t[i], i, t);
            }

            return res;
        };
    }

    var A = 'A'.charCodeAt(0),
        Z = 'Z'.charCodeAt(0);

    /**
     * Prepare an IBAN for mod 97 computation by moving the first 4 chars to the end and transforming the letters to
     * numbers (A = 10, B = 11, ..., Z = 35), as specified in ISO13616.
     *
     * @param {string} iban the IBAN
     * @returns {string} the prepared IBAN
     */
    function iso13616Prepare(iban) {
        iban = iban.toUpperCase();
        iban = iban.substr(4) + iban.substr(0,4);

        return iban.split('').map(function(n){
            var code = n.charCodeAt(0);
            if (code >= A && code <= Z){
                // A = 10, B = 11, ... Z = 35
                return code - A + 10;
            } else {
                return n;
            }
        }).join('');
    }

    /**
     * Calculates the MOD 97 10 of the passed IBAN as specified in ISO7064.
     *
     * @param iban
     * @returns {number}
     */
    function iso7064Mod97_10(iban) {
        var remainder = iban,
            block;

        while (remainder.length > 2){
            block = remainder.slice(0, 9);
            remainder = parseInt(block, 10) % 97 + remainder.slice(block.length);
        }

        return parseInt(remainder, 10) % 97;
    }

    /**
     * Parse the BBAN structure used to configure each IBAN Specification and returns a matching regular expression.
     * A structure is composed of blocks of 3 characters (one letter and 2 digits). Each block represents
     * a logical group in the typical representation of the BBAN. For each group, the letter indicates which characters
     * are allowed in this group and the following 2-digits number tells the length of the group.
     *
     * @param {string} structure the structure to parse
     * @returns {RegExp}
     */
    function parseStructure(structure){
        // split in blocks of 3 chars
        var regex = structure.match(/(.{3})/g).map(function(block){

            // parse each structure block (1-char + 2-digits)
            var format,
                pattern = block.slice(0, 1),
                repeats = parseInt(block.slice(1), 10);

            switch (pattern){
                case "A": format = "0-9A-Za-z"; break;
                case "B": format = "0-9A-Z"; break;
                case "C": format = "A-Za-z"; break;
                case "F": format = "0-9"; break;
                case "L": format = "a-z"; break;
                case "U": format = "A-Z"; break;
                case "W": format = "0-9a-z"; break;
            }

            return '([' + format + ']{' + repeats + '})';
        });

        return new RegExp('^' + regex.join('') + '$');
    }

    /**
     * Create a new Specification for a valid IBAN number.
     *
     * @param countryCode the code of the country
     * @param length the length of the IBAN
     * @param structure the structure of the undernying BBAN (for validation and formatting)
     * @param example an example valid IBAN
     * @constructor
     */
    function Specification(countryCode, length, structure, example){

        this.countryCode = countryCode;
        this.length = length;
        this.structure = structure;
        this.example = example;
    }

    /**
     * Lazy-loaded regex (parse the structure and construct the regular expression the first time we need it for validation)
     */
    Specification.prototype._regex = function(){
        return this._cachedRegex || (this._cachedRegex = parseStructure(this.structure))
    };

    /**
     * Check if the passed iban is valid according to this specification.
     *
     * @param {String} iban the iban to validate
     * @returns {boolean} true if valid, false otherwise
     */
    Specification.prototype.isValid = function(iban){
        return this.length == iban.length
            && this.countryCode === iban.slice(0,2)
            && this._regex().test(iban.slice(4))
            && iso7064Mod97_10(iso13616Prepare(iban)) == 1;
    };

    /**
     * Convert the passed IBAN to a country-specific BBAN.
     *
     * @param iban the IBAN to convert
     * @param separator the separator to use between BBAN blocks
     * @returns {string} the BBAN
     */
    Specification.prototype.toBBAN = function(iban, separator) {
        return this._regex().exec(iban.slice(4)).slice(1).join(separator);
    };

    /**
     * Convert the passed BBAN to an IBAN for this country specification.
     * Please note that <i>"generation of the IBAN shall be the exclusive responsibility of the bank/branch servicing the account"</i>.
     * This method implements the preferred algorithm described in http://en.wikipedia.org/wiki/International_Bank_Account_Number#Generating_IBAN_check_digits
     *
     * @param bban the BBAN to convert to IBAN
     * @returns {string} the IBAN
     */
    Specification.prototype.fromBBAN = function(bban) {
        if (!this.isValidBBAN(bban)){
            throw new Error('Invalid BBAN');
        }

        var remainder = iso7064Mod97_10(iso13616Prepare(this.countryCode + '00' + bban)),
            checkDigit = ('0' + (98 - remainder)).slice(-2);

        return this.countryCode + checkDigit + bban;
    };

    /**
     * Check of the passed BBAN is valid.
     * This function only checks the format of the BBAN (length and matching the letetr/number specs) but does not
     * verify the check digit.
     *
     * @param bban the BBAN to validate
     * @returns {boolean} true if the passed bban is a valid BBAN according to this specification, false otherwise
     */
    Specification.prototype.isValidBBAN = function(bban) {
        return this.length - 4 == bban.length
            && this._regex().test(bban);
    };

    var countries = {};

    function addSpecification(IBAN){
        countries[IBAN.countryCode] = IBAN;
    }

    addSpecification(new Specification("AE", 23, "F03F16",             "AE070331234567890123456"));
    addSpecification(new Specification("AL", 28, "F08A16",             "AL47212110090000000235698741"));
    addSpecification(new Specification("AT", 20, "F05F11",             "AT611904300234573201"));
    addSpecification(new Specification("AZ", 28, "U04A20",             "AZ21NABZ00000000137010001944"));
    addSpecification(new Specification("BA", 20, "F03F03F08F02",       "BA391290079401028494"));
    addSpecification(new Specification("BE", 16, "F03F07F02",          "BE68539007547034"));
    addSpecification(new Specification("BG", 22, "U04F04F02A08",       "BG80BNBG96611020345678"));
    addSpecification(new Specification("BH", 22, "U04A14",             "BH67BMAG00001299123456"));
    addSpecification(new Specification("CH", 21, "F05A12",             "CH9300762011623852957"));
    addSpecification(new Specification("CR", 21, "F03F14",             "CR0515202001026284066"));
    addSpecification(new Specification("CY", 28, "F03F05A16",          "CY17002001280000001200527600"));
    addSpecification(new Specification("CZ", 24, "F04F06F10",          "CZ6508000000192000145399"));
    addSpecification(new Specification("DE", 22, "F08F10",             "DE89370400440532013000"));
    addSpecification(new Specification("DK", 18, "F04F09F01",          "DK5000400440116243"));
    addSpecification(new Specification("DO", 28, "U04F20",             "DO28BAGR00000001212453611324"));
    addSpecification(new Specification("EE", 20, "F02F02F11F01",       "EE382200221020145685"));
    addSpecification(new Specification("ES", 24, "F04F04F01F01F10",    "ES9121000418450200051332"));
    addSpecification(new Specification("FI", 18, "F06F07F01",          "FI2112345600000785"));
    addSpecification(new Specification("FO", 18, "F04F09F01",          "FO6264600001631634"));
    addSpecification(new Specification("FR", 27, "F05F05A11F02",       "FR1420041010050500013M02606"));
    addSpecification(new Specification("GB", 22, "U04F06F08",          "GB29NWBK60161331926819"));
    addSpecification(new Specification("GE", 22, "U02F16",             "GE29NB0000000101904917"));
    addSpecification(new Specification("GI", 23, "U04A15",             "GI75NWBK000000007099453"));
    addSpecification(new Specification("GL", 18, "F04F09F01",          "GL8964710001000206"));
    addSpecification(new Specification("GR", 27, "F03F04A16",          "GR1601101250000000012300695"));
    addSpecification(new Specification("GT", 28, "A04A20",             "GT82TRAJ01020000001210029690"));
    addSpecification(new Specification("HR", 21, "F07F10",             "HR1210010051863000160"));
    addSpecification(new Specification("HU", 28, "F03F04F01F15F01",    "HU42117730161111101800000000"));
    addSpecification(new Specification("IE", 22, "U04F06F08",          "IE29AIBK93115212345678"));
    addSpecification(new Specification("IL", 23, "F03F03F13",          "IL620108000000099999999"));
    addSpecification(new Specification("IS", 26, "F04F02F06F10",       "IS140159260076545510730339"));
    addSpecification(new Specification("IT", 27, "U01F05F05A12",       "IT60X0542811101000000123456"));
    addSpecification(new Specification("KW", 30, "U04A22",             "KW81CBKU0000000000001234560101"));
    addSpecification(new Specification("KZ", 20, "F03A13",             "KZ86125KZT5004100100"));
    addSpecification(new Specification("LB", 28, "F04A20",             "LB62099900000001001901229114"));
    addSpecification(new Specification("LI", 21, "F05A12",             "LI21088100002324013AA"));
    addSpecification(new Specification("LT", 20, "F05F11",             "LT121000011101001000"));
    addSpecification(new Specification("LU", 20, "F03A13",             "LU280019400644750000"));
    addSpecification(new Specification("LV", 21, "U04A13",             "LV80BANK0000435195001"));
    addSpecification(new Specification("MC", 27, "F05F05A11F02",       "MC5811222000010123456789030"));
    addSpecification(new Specification("MD", 24, "U02F18",             "MD24AG000225100013104168"));
    addSpecification(new Specification("ME", 22, "F03F13F02",          "ME25505000012345678951"));
    addSpecification(new Specification("MK", 19, "F03A10F02",          "MK07250120000058984"));
    addSpecification(new Specification("MR", 27, "F05F05F11F02",       "MR1300020001010000123456753"));
    addSpecification(new Specification("MT", 31, "U04F05A18",          "MT84MALT011000012345MTLCAST001S"));
    addSpecification(new Specification("MU", 30, "U04F02F02F12F03U03", "MU17BOMM0101101030300200000MUR"));
    addSpecification(new Specification("NL", 18, "U04F10",             "NL91ABNA0417164300"));
    addSpecification(new Specification("NO", 15, "F04F06F01",          "NO9386011117947"));
    addSpecification(new Specification("PK", 24, "U04A16",             "PK36SCBL0000001123456702"));
    addSpecification(new Specification("PL", 28, "F08F16",             "PL61109010140000071219812874"));
    addSpecification(new Specification("PS", 29, "U04A21",             "PS92PALS000000000400123456702"));
    addSpecification(new Specification("PT", 25, "F04F04F11F02",       "PT50000201231234567890154"));
    addSpecification(new Specification("RO", 24, "U04A16",             "RO49AAAA1B31007593840000"));
    addSpecification(new Specification("RS", 22, "F03F13F02",          "RS35260005601001611379"));
    addSpecification(new Specification("SA", 24, "F02A18",             "SA0380000000608010167519"));
    addSpecification(new Specification("SE", 24, "F03F16F01",          "SE4550000000058398257466"));
    addSpecification(new Specification("SI", 19, "F05F08F02",          "SI56263300012039086"));
    addSpecification(new Specification("SK", 24, "F04F06F10",          "SK3112000000198742637541"));
    addSpecification(new Specification("SM", 27, "U01F05F05A12",       "SM86U0322509800000000270100"));
    addSpecification(new Specification("TN", 24, "F02F03F13F02",       "TN5910006035183598478831"));
    addSpecification(new Specification("TR", 26, "F05A01A16",          "TR330006100519786457841326"));
    addSpecification(new Specification("VG", 24, "U04F16",             "VG96VPVG0000012345678901"));

    var NON_ALPHANUM = /[^a-zA-Z0-9]/g,
        EVERY_FOUR_CHARS =/(.{4})(?!$)/g;

    /**
     * Utility function to check if a variable is a String.
     *
     * @param v
     * @returns {boolean} true if the passed variable is a String, false otherwise.
     */
    function isString(v){
        return (typeof v == 'string' || v instanceof String);
    }

    /**
     * Check if an IBAN is valid.
     *
     * @param {String} iban the IBAN to validate.
     * @returns {boolean} true if the passed IBAN is valid, false otherwise
     */
    exports.isValid = function(iban){
        if (!isString(iban)){
            return false;
        }
        iban = this.electronicFormat(iban);
        var countryStructure = countries[iban.slice(0,2)];
        return !!countryStructure && countryStructure.isValid(iban);
    };

    /**
     * Convert an IBAN to a BBAN.
     *
     * @param iban
     * @param {String} [separator] the separator to use between the blocks of the BBAN, defaults to ' '
     * @returns {string|*}
     */
    exports.toBBAN = function(iban, separator){
        if (typeof separator == 'undefined'){
            separator = ' ';
        }
        iban = this.electronicFormat(iban);
        var countryStructure = countries[iban.slice(0,2)];
        if (!countryStructure) {
            throw new Error('No country with code ' + iban.slice(0,2));
        }
        return countryStructure.toBBAN(iban, separator);
    };

    /**
     * Convert the passed BBAN to an IBAN for this country specification.
     * Please note that <i>"generation of the IBAN shall be the exclusive responsibility of the bank/branch servicing the account"</i>.
     * This method implements the preferred algorithm described in http://en.wikipedia.org/wiki/International_Bank_Account_Number#Generating_IBAN_check_digits
     *
     * @param countryCode the country of the BBAN
     * @param bban the BBAN to convert to IBAN
     * @returns {string} the IBAN
     */
    exports.fromBBAN = function(countryCode, bban){
        var countryStructure = countries[countryCode];
        if (!countryStructure) {
            throw new Error('No country with code ' + countryCode);
        }
        return countryStructure.fromBBAN(this.electronicFormat(bban));
    };

    /**
     * Check the validity of the passed BBAN.
     *
     * @param countryCode the country of the BBAN
     * @param bban the BBAN to check the validity of
     */
    exports.isValidBBAN = function(countryCode, bban){
        if (!isString(bban)){
            return false;
        }
        var countryStructure = countries[countryCode];
        return countryStructure && countryStructure.isValidBBAN(this.electronicFormat(bban));
    };

    /**
     *
     * @param iban
     * @param separator
     * @returns {string}
     */
    exports.printFormat = function(iban, separator){
        if (typeof separator == 'undefined'){
            separator = ' ';
        }
        return this.electronicFormat(iban).replace(EVERY_FOUR_CHARS, "$1" + separator);
    };

    /**
     *
     * @param iban
     * @returns {string}
     */
    exports.electronicFormat = function(iban){
        return iban.replace(NON_ALPHANUM, '').toUpperCase();
    };

    /**
     * An object containing all the known IBAN specifications.
     */
    exports.countries = countries;

})(typeof exports == 'undefined' ? this.IBAN = {} : exports);