/*
 * Standard form verification functions
 * These have all been optimized for NS 4+ / IE 4+ only!
 *
 * dburry 19990830 wrote original code
 * dburry 20000125 added IE 4.x Mac bug fix to addError
 * dburry 20000301 added isEU getCountry, deprecated isUSA isCanada
 * dburry 20000302 added clear/set/check/uncheckFirst/Last/All _setField
 * slahteine 20000412 fixed add/showErrors to focus after alert dismissed
 *
 */

function VerifyForm() {

//	this.msgSeparator = '\n';
//	this.blankValue   = '';
	this._gripes      = new Array();

	this._AlphaNum = /^[a-z0-9_ ]+$/i;
	this._Numeric  = /^-?[0-9]+$/i;
	this._StateUSA = /^(A[AEKLPRSZ]|C[AOT]|DC|DE|FL|FM|GA|GU|HI|I[ADLN]|KS|KY|LA|M[ADEHINOPST]|N[CDEHJMVY]|O[HKR]|P[ARW]|RI|SC|SD|T[NTX]|UT|V[AIT]|W[AIVY])$/i;
	this._StateCan = /^(AB|BC|MB|N[BFST]|ON|PE|PQ|QC|SK|YT)$/i;
	this._ZipUSA   = /^\d{5}([- ]?\d{4})?$/;
	this._ZipCan   = /^[A-Z]\d[A-Z] ?\d[A-Z]\d$/i;
	this._PhoneNA  = /^\(?\d{3}\)?\D?\d{3}\D?\d{4}$/;
	this._Email    = /^([0-9a-z_&.+-]+!)*[0-9a-z_&.+-]+@(([0-9a-z]([0-9a-z-]*[0-9a-z])?\.)+[a-z]{2,3}|([0-9]{1,3}\.){3}[0-9]{1,3})$/i;
	this._EmailBad = /^(((postmaster|root|hostmaster|mailer-daemon|webmaster)@(adobe|frame)\.com)|.*@(.*\.(adobe|frame)\.com|localhost\.com|127\.0\.0\.1))$/i;
	this._Country = {
		us: /^(u\.?s\.?(a\.?)?|united states)$/i,
		ca: /^(ca\.?|can\.?|canada)$/i,
		jp: /^(jp\.?|japan|nippon)$/i,
		at: /^(at\.?|austria|osterreich)$/i,
		be: /^(be\.?|belgium|belgie)$/i,
		dk: /^(dk\.?|denmark|danmark)$/i,
		fi: /^(fi\.?|finland|suomi)$/i,
		fr: /^(fr\.?|france)$/i,
		de: /^(de\.?|germany|deutschland)$/i,
		gr: /^(gr\.?|greece|hellas)$/i,
		ie: /^(ie\.?|(republic of )?ireland|eire)$/i,
		it: /^(it\.?|italy|italia)$/i,
		lu: /^(lu\.?|luxembourg)$/i,
		nl: /^(nl\.?|(the )?netherlands|holland)$/i,
		pt: /^(pt\.?|portugal)$/i,
		es: /^(es\.?|spain|espana)$/i,
		se: /^(se\.?|sweden|sverige)$/i,
		uk: /^(u\.?k\.?|united kingdom|(great )?britain|england)$/i,
		no: /^(no\.?|norway|norge)$/i,
		ch: /^(ch\.?|switzerland.*)$/i
	};
	this._CC = {
		Visa: /^4\d{12}(\d{3})?$/,
		MasterCard: /^5[1-5]\d{14}$/,
		'American Express': /^3[47]\d{13}$/,
		Discover: /^6011\d{12}$/
	};

	this.addError      = _VerifyForm_addError;
	this.showErrors    = _VerifyForm_showErrors;
	this.hasValue      = _VerifyForm_hasValue;
	this.getValue      = _VerifyForm_getValue;
	this.getAllValues  = _VerifyForm_getAllValues;
	this.clearFirst    = _VerifyForm_clearFirst;
	this.clearLast     = _VerifyForm_clearLast;
	this.clearAll      = _VerifyForm_clearAll;
	this.setFirst      = _VerifyForm_setFirst;
	this.setLast       = _VerifyForm_setLast;
	this.setAll        = _VerifyForm_setAll;
	this.checkFirst    = _VerifyForm_checkFirst;
	this.checkLast     = _VerifyForm_checkLast;
	this.checkAll      = _VerifyForm_checkAll;
	this.uncheckFirst  = _VerifyForm_uncheckFirst;
	this.uncheckLast   = _VerifyForm_uncheckLast;
	this.uncheckAll    = _VerifyForm_uncheckAll;
	this._setField     = _VerifyForm__setField;
	this.validState    = _VerifyForm_validState;
	this.validZip      = _VerifyForm_validZip;
	this.validPhone    = _VerifyForm_validPhone;
	this.validEmail    = _VerifyForm_validEmail;
	this.alphaNum      = _VerifyForm_alphaNum;
	this.isNumeric     = _VerifyForm_numeric;
	this.getCountry    = _VerifyForm_getCountry;
	this.isNA          = _VerifyForm_isNA;
	this.isEU          = _VerifyForm_isEU;
	this.isUSA         = _VerifyForm_isUSA; // deprecated
	this.isCanada      = _VerifyForm_isCanada; // deprecated
	this.validCardType = _VerifyForm_validCardType;
	this.validCard     = _VerifyForm_validCard;
	this.getCardType   = _VerifyForm_getCardType;
	this._mod10        = _VerifyForm__mod10;

	return this;
}

function _VerifyForm_addError (field, msg) {
	if ( ! this._gripes.length)
		this._gripeField = field;
	this._gripes[this._gripes.length] = msg;
}

function _VerifyForm_showErrors (head, foot, warn)
{
	if (this._gripes.length)
	{
		say_what = (head ? head + '\n\n' : '') + this._gripes.join('\n') + (foot ? '\n\n' + foot : '')

		if (warn == true)
			return confirm(say_what)
		else
			alert(say_what)

		if (this._gripeField)
		{
			var field = this._gripeField

			if (field.all || field.focus)
				field.focus()

			if (field.value && field.select)	// was (field.all || field.select) but it breaks with popups in IE
				field.select()
		}

		return false
	}

	return true
}

function _VerifyForm_hasValue (field) {
	if ( ! field.type && field.length ) {
		for (var i = 0; i < field.length; i++)
			if (field[i].type && this.hasValue(field[i]))
				return true;
		return false;
	}
	if (/select/.test(field.type))
		return (field.selectedIndex != -1 && (field.options[field.selectedIndex].value != ''));
	if (/(checkbox|radio)/.test(field.type))
		return ( field.checked && (field.value != '') );
	if (/(button|reset|submit)/.test(field.type))
		return false;
	return (field.value != '')
}

//
// v.getValue(field)
//	Returns the value of any kind of item
//
function _VerifyForm_getValue (field)
{
	if ( ! field.type && field.length ) {
		for (var i = 0; i < field.length; i++) {
			if (field[i].type) {
				var value = this.getValue(field[i]);
				if (value) return value;
			}
		}
		return null;
	}
	if (/select/.test(field.type))
		return ( (field.selectedIndex != -1 && (field.options[field.selectedIndex].value != ''))
			? field.options[field.selectedIndex].value : null );
	if (/(checkbox|radio)/.test(field.type))
		return ( (field.checked && (field.value != '')) ? field.value : null );
	return ( ( ! /(button|reset|submit)/.test(field.type) && (field.value != '')) ? field.value : null )
}

function _VerifyForm_getAllValues (field) {
	var arr = new Array();
	if ( ! field.type && field.length ) {
		var temparr;
		for (var i = 0; i < field.length; i++) {
			if (field[i].type) {
				temparr = this.getAllValues(field[i]);
				for (var j = 0; j < temparr.length; j++)
					arr[arr.length] = temparr[j];
			}
		}
	}
	else if (/select/.test(field.type)) {
		for (var i = 0; i < field.length; i++)
			if (field.options[i].selected && (field.options[i].value != ''))
				arr[arr.length] = field.options[i].value;
	}
	else if (/(checkbox|radio)/.test(field.type) && field.checked && (field.value != ''))
		arr[arr.length] = field.value;
	else if ( ! /(button|reset|submit)/.test(field.type) && (field.value != ''))
		arr[arr.length] = field.value;
	return arr;
}

function _VerifyForm_clearFirst (field, val) { return this._setField(field, 1, val, '', true) }
function _VerifyForm_clearLast (field, val) { return this._setField(field, -1, val, '', true) }
function _VerifyForm_clearAll (field, val) { return this._setField(field, 0, val, '', true) }
function _VerifyForm_setFirst (field, toval, val) { return this._setField(field, 1, val, toval, true) }
function _VerifyForm_setLast (field, toval, val) { return this._setField(field, -1, val, toval, true) }
function _VerifyForm_setAll (field, toval, val) { return this._setField(field, 0, val, toval, true) }
function _VerifyForm_checkFirst (field, val) { return this._setField(field, 1, val, true, false) }
function _VerifyForm_checkLast (field, val) { return this._setField(field, -1, val, true, false) }
function _VerifyForm_checkAll (field, val) { return this._setField(field, 0, val, true, false) }
function _VerifyForm_uncheckFirst (field, val) { return this._setField(field, 1, val, false, false) }
function _VerifyForm_uncheckLast (field, val) { return this._setField(field, -1, val, false, false) }
function _VerifyForm_uncheckAll (field, val) { return this._setField(field, 0, val, false, false) }
function _VerifyForm__setField (field, whichway, val, toval, valueorcheck) {
	var retval = false;
	if ( ! field.type && field.length ) {
		for (var i = (whichway == 1 ? 0 : field.length - 1); i < field.length && i >= 0; i += (whichway || -1))
			if (field[i].type && this._setField(field[i], whichway, val, toval, valueorcheck))
				if (whichway) return true;
				else retval = true;
		return retval;
	}
	if (valueorcheck) {
		if (/(file|password|text)/.test(field.type) && (typeof val != 'string' || field.value == val)) {
			field.value = toval;
			return true;
		}
	}
	else if (/select/.test(field.type)) {
		for (var i = (whichway == 1 ? 0 : field.length - 1); i < field.length && i >= 0; i += (whichway || -1)) {
			if ( typeof val != 'string' || field.options[i].value == val) {
				field.options[i].selected = toval;
				if (whichway) return true;
				else retval = true;
			}
		}
		return retval;
	}
	else if (/(checkbox|radio)/.test(field.type) && (typeof val != 'string' || field.value == val)) {
		field.checked = toval;
		return true;
	}
	return false
}

//
// these two added by SRL - May 2000
//
function _VerifyForm_numeric (e) { return ( this._Numeric.test(e) ) }
function _VerifyForm_alphaNum (e) { return ( this._AlphaNum.test(e) ) }

function _VerifyForm_validState (s, c) { return ( this.isUSA(c) ? this._StateUSA.test(s) : (this.isCanada(c) ? this._StateCan.test(s) : true) ) }
function _VerifyForm_validZip (z, c) { return ( this.isUSA(c) ? this._ZipUSA.test(z)   : (this.isCanada(c) ? this._ZipCan.test(z)   : true) ) }
function _VerifyForm_validPhone (p, c) { return ( this.isNA(c)  ? this._PhoneNA.test(p)  : true ) }
function _VerifyForm_validEmail (e) { return ( this._Email.test(e) && ! this._EmailBad.test(e) ) }
function _VerifyForm_getCountry (c) {
	for (var i = 1; i < arguments.length; i++)
		if (this._Country[arguments[i]] && this._Country[arguments[i]].test(c))
			return arguments[i];
	return null;
}
function _VerifyForm_isNA (c) { return ( this.getCountry(c, 'us', 'ca') ) }
function _VerifyForm_isEU (c) { return ( this.getCountry(c, 'at', 'be', 'dk', 'fi', 'fr', 'de', 'gr', 'ie', 'it', 'lu', 'nl', 'pt', 'es', 'se', 'uk') ) }
function _VerifyForm_isUSA (c) { return ( this._Country.us.test(c) ) } // deprecated
function _VerifyForm_isCanada (c) { return ( this._Country.ca.test(c) ) } // deprecated

function _VerifyForm_validCardType (n, t) {
	return ( this._CC[t] && this._CC[t].test(n) && this._mod10(n) )
}
function _VerifyForm_validCard (n) {
	for (var t in this._CC) if (this._CC[t].test(n))
		return (this._mod10(n) ? t : null); return null
}
function _VerifyForm_getCardType (n) {
	for (var t in this._CC) if (this._CC[t].test(n)) return t; return null
}
function _VerifyForm__mod10 (num) {
	var sum = 0;
	for (var i = num.length - 1; i >= 0; i -= 2)
		sum += num.charAt(i) * 1 + num.charAt(i - 1) * 2 - (num.charAt(i - 1) >= 5 ? 9 : 0);
	return ( sum % 10 == 0 );
}