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✏️ Editing: gravityforms.js

// "prop" method fix for previous versions of jQuery (1.5 and below)
if( typeof jQuery.fn.prop === 'undefined' ) {
    jQuery.fn.prop = jQuery.fn.attr;
}

jQuery(document).ready(function(){
    //Formatting free form currency fields to currency
    jQuery(document).bind('gform_post_render', gformBindFormatPricingFields);
});

function gformBindFormatPricingFields(){
    jQuery(".ginput_amount, .ginput_donation_amount").bind("change", function(){
        gformFormatPricingField(this);
    });

jQuery(".ginput_amount, .ginput_donation_amount").each(function(){
        gformFormatPricingField(this);
    });
}

//------------------------------------------------
//---------- CURRENCY ----------------------------
//------------------------------------------------
function Currency(currency){
    this.currency = currency;

this.toNumber = function(text){

if(this.isNumeric(text)) {
			return parseFloat(text);
		}

return gformCleanNumber(text, this.currency["symbol_right"], this.currency["symbol_left"], this.currency["decimal_separator"]);
    };

/**
	 * Attempts to clean the specified number and formats it as currency.
	 *
	 * @since 2.1.1.16 Allow the overriding of numerical checks.
	 *
	 * @param number    int  Number to be formatted. It can be a clean number, or an already formatted number.
	 * @param isNumeric bool Whether or not the number is guaranteed to be a clean, unformatted number.
	 *                       When false the function will attempt to clean the number. Defaults to false.
	 *
	 * @return string A number formatted as currency.
	 */
	this.toMoney = function(number, isNumeric){

isNumeric = isNumeric || false; //isNumeric is an optional parameter. Defaults to false

if( ! isNumeric ) {
			//Cleaning number, removing all formatting
			number = gformCleanNumber(number, this.currency["symbol_right"], this.currency["symbol_left"], this.currency["decimal_separator"]);
		}

if(number === false) {
			return "";
		}

number = number + "";
        negative = "";
        if(number[0] == "-"){

number = parseFloat(number.substr(1));
			negative = '-';
		}

money = this.numberFormat(number, this.currency["decimals"], this.currency["decimal_separator"], this.currency["thousand_separator"]);

if ( money == '0.00' ){
			negative = '';
		}

var symbol_left = this.currency["symbol_left"] ? this.currency["symbol_left"] + this.currency["symbol_padding"] : "";
        var symbol_right = this.currency["symbol_right"] ? this.currency["symbol_padding"] + this.currency["symbol_right"] : "";

money =  negative + this.htmlDecode(symbol_left) + money + this.htmlDecode(symbol_right);

return money;
    };

/**
	 * Formats a number given the specified parameters.
	 *
	 * @since Unknown
	 *
	 * @param number        int    Number to be formatted. Must be a clean, unformatted  format.
	 * @param decimals      int    Number of decimals that the output should contain.
	 * @param dec_point     string Character to use as the decimal separator. Defaults to ".".
	 * @param thousands_sep string Character to use as the thousand separator. Defaults to ",".
	 * @param padded        bool   Pads output with zeroes if the number is exact. For example, 1.200.
	 *
	 * @return string The formatted number.
	 */
    this.numberFormat = function(number, decimals, dec_point, thousands_sep, padded){

var padded = typeof padded == 'undefined';
        number = (number+'').replace(',', '').replace(' ', '');
        var n = !isFinite(+number) ? 0 : +number,
        prec = !isFinite(+decimals) ? 0 : Math.abs(decimals),
        sep = (typeof thousands_sep === 'undefined') ? ',' : thousands_sep, dec = (typeof dec_point === 'undefined') ? '.' : dec_point,
        s = '',

toFixedFix = function (n, prec) {
            var k = Math.pow(10, prec);
            return '' + Math.round(n * k) / k;
        };

if(decimals == '0') {

n = n + 0.0000000001; // getting around floating point arithmetic issue when rounding. ( i.e. 4.005 is represented as 4.004999999999 and gets rounded to 4.00 instead of 4.01 )

s = ('' + Math.round(n)).split('.');
        } else
        if(decimals == -1) {
            s = ('' + n).split('.');
        } else {

n = n + 0.0000000001; // getting around floating point arithmetic issue when rounding. ( i.e. 4.005 is represented as 4.004999999999 and gets rounded to 4.00 instead of 4.01 )

// Fix for IE parseFloat(0.55).toFixed(0) = 0;
            s = toFixedFix(n, prec).split('.');
        }

if (s[0].length > 3) {
            s[0] = s[0].replace(/\B(?=(?:\d{3})+(?!\d))/g, sep);
        }

if(padded) {
            if ((s[1] || '').length < prec) {
                s[1] = s[1] || '';
                s[1] += new Array(prec - s[1].length + 1).join('0');
            }
        }

return s.join(dec);
    }

this.isNumeric = function(number){
        return gformIsNumber(number);
    };

this.htmlDecode = function(text) {
        var c,m,d = text;

// look for numerical entities &#34;
        var arr=d.match(/&#[0-9]{1,5};/g);

// if no matches found in string then skip
        if(arr!=null){
            for(var x=0;x<arr.length;x++){
                m = arr[x];
                c = m.substring(2,m.length-1); //get numeric part which is refernce to unicode character
                // if its a valid number we can decode
                if(c >= -32768 && c <= 65535){
                    // decode every single match within string
                    d = d.replace(m, String.fromCharCode(c));
                }else{
                    d = d.replace(m, ""); //invalid so replace with nada
                }
            }
        }
        return d;
    };
}

/**
 * Gets a formatted number and returns a clean "decimal dot" number.
 *
 * Note: Input must be formatted according to the specified parameters (symbol_right, symbol_left, decimal_separator).
 * @example input -> $1.20, output -> 1.2
 *
 * @since 2.1.1.16 Modified to support additional param in Currency.toMoney.
 *
 * @param text              string The currency-formatted number.
 * @param symbol_right      string The symbol used on the right.
 * @param symbol_left       string The symbol used on the left.
 * @param decimal_separator string The decimal separator being used.
 *
 * @return float The unformatted numerical value.
 */
function gformCleanNumber(text, symbol_right, symbol_left, decimal_separator){
    var clean_number = '',
        float_number = '',
        digit = '',
        is_negative = false;

//converting to a string if a number as passed
    text = text + " ";

//Removing symbol in unicode format (i.e. &#4444;)
    text = text.replace(/&.*?;/g, "");

//Removing symbol from text
    text = text.replace(symbol_right, "");
    text = text.replace(symbol_left, "");

//Removing all non-numeric characters
    for(var i=0; i<text.length; i++){
        digit = text.substr(i,1);
        if( (parseInt(digit) >= 0 && parseInt(digit) <= 9) || digit == decimal_separator )
            clean_number += digit;
        else if(digit == '-')
            is_negative = true;
    }

//Removing thousand separators but keeping decimal point
    for(var i=0; i<clean_number.length; i++) {
        digit = clean_number.substr(i,1);
        if (digit >= '0' && digit <= '9')
            float_number += digit;
        else if(digit == decimal_separator){
            float_number += ".";
        }
    }

if(is_negative)
        float_number = "-" + float_number;

return gformIsNumber(float_number) ? parseFloat(float_number) : false;
}

function gformGetDecimalSeparator(numberFormat){
    var s;
    switch (numberFormat){
        case 'currency' :
            var currency = new Currency(gf_global.gf_currency_config);
            s = currency.currency["decimal_separator"];
            break;
        case 'decimal_comma' :
            s = ',';
            break;
        default :
            s = "."
     }
    return s;
}

function gformIsNumber(n) {
  return !isNaN(parseFloat(n)) && isFinite(n);
}

function gformIsNumeric(value, number_format){

switch(number_format){
        case "decimal_dot" :
            var r = new RegExp("^(-?[0-9]{1,3}(?:,?[0-9]{3})*(?:\.[0-9]+)?)$");
            return r.test(value);
        break;

case "decimal_comma" :
            var r = new RegExp("^(-?[0-9]{1,3}(?:\.?[0-9]{3})*(?:,[0-9]+)?)$");
            return r.test(value);
        break;
    }
    return false;
}

//------------------------------------------------
//---------- MULTI-PAGE --------------------------
//------------------------------------------------
function gformDeleteUploadedFile(formId, fieldId, deleteButton){
    var parent = jQuery("#field_" + formId + "_" + fieldId);

var fileIndex = jQuery(deleteButton).parent().index();

parent.find(".ginput_preview").eq(fileIndex).remove();

//displaying single file upload field
    parent.find("input[type=\"file\"]").removeClass("gform_hidden");

//displaying post image label
    parent.find(".ginput_post_image_file").show();

//clearing post image meta fields
    parent.find("input[type=\"text\"]").val('');

//removing file from uploaded meta
    var filesJson = jQuery('#gform_uploaded_files_' + formId).val();

if(filesJson){
        var files = jQuery.secureEvalJSON(filesJson);
        if(files) {
            var inputName = "input_" + fieldId;
            var $multfile = parent.find("#gform_multifile_upload_" + formId + "_" + fieldId );
            if( $multfile.length > 0 ) {
                files[inputName].splice(fileIndex, 1);
                var settings = $multfile.data('settings');
                var max = settings.gf_vars.max_files;
                jQuery("#" + settings.gf_vars.message_id).html('');
                if(files[inputName].length < max)
                    gfMultiFileUploader.toggleDisabled(settings, false);

} else {
                files[inputName] = null;
            }

jQuery('#gform_uploaded_files_' + formId).val(jQuery.toJSON(files));
        }
    }
}

//------------------------------------------------
//---------- PRICE -------------------------------
//------------------------------------------------
var _gformPriceFields = new Array();
var _anyProductSelected;

function gformIsHidden(element){
    return element.parents('.gfield').not(".gfield_hidden_product").css("display") == "none";
}

function gformCalculateTotalPrice(formId){

if(!_gformPriceFields[formId])
        return;

var price = 0;

_anyProductSelected = false; //Will be used by gformCalculateProductPrice().
    for(var i=0; i<_gformPriceFields[formId].length; i++){
        price += gformCalculateProductPrice(formId, _gformPriceFields[formId][i]);
    }

//add shipping price if a product has been selected
    if(_anyProductSelected){
        //shipping price
        var shipping = gformGetShippingPrice(formId)
        price += shipping;
    }

//gform_product_total filter. Allows uers to perform custom price calculation
    if(window["gform_product_total"])
        price = window["gform_product_total"](formId, price);

price = gform.applyFilters('gform_product_total', price, formId);

//updating total
    var totalElement = jQuery(".ginput_total_" + formId);
    if( totalElement.length > 0 ) {

var currentTotal = totalElement.next().val(),
            formattedTotal = gformFormatMoney(price, true);

if (currentTotal != price) {
            totalElement.next().val(price).change();
        }

if (formattedTotal != totalElement.first().text()) {
            totalElement.html(formattedTotal);
        }

}
}

function gformGetShippingPrice(formId){
    var shippingField = jQuery(".gfield_shipping_" + formId + " input[type=\"hidden\"], .gfield_shipping_" + formId + " select, .gfield_shipping_" + formId + " input:checked");
    var shipping = 0;
    if(shippingField.length == 1 && !gformIsHidden(shippingField)){
        if(shippingField.attr("type") && shippingField.attr("type").toLowerCase() == "hidden")
            shipping = shippingField.val();
        else
            shipping = gformGetPrice(shippingField.val());
    }

return gformToNumber(shipping);
}

function gformGetFieldId(element){
    var id = jQuery(element).attr("id");
    var pieces = id.split("_");
    if(pieces.length <=0)
        return 0;

var fieldId = pieces[pieces.length-1];
    return fieldId;

}

function gformCalculateProductPrice(form_id, productFieldId){

var suffix = '_' + form_id + '_' + productFieldId;

//Drop down auto-calculating labels
    jQuery('.gfield_option' + suffix + ', .gfield_shipping_' + form_id).find('select').each(function(){

var dropdown_field = jQuery(this);
        var selected_price = gformGetPrice(dropdown_field.val());
        var field_id = dropdown_field.attr('id').split('_')[2];
        dropdown_field.children('option').each(function(){
            var choice_element = jQuery(this);
            var label = gformGetOptionLabel(choice_element, choice_element.val(), selected_price, form_id, field_id);
            choice_element.html(label);
        });
		dropdown_field.trigger('chosen:updated');
    });

//Checkboxes labels with prices
    jQuery('.gfield_option' + suffix).find('.gfield_checkbox').find('input:checkbox').each(function(){
        var checkbox_item = jQuery(this);
        var id = checkbox_item.attr('id');
        var field_id = id.split('_')[2];
        var label_id = id.replace('choice_', '#label_');
        var label_element = jQuery(label_id);
        var label = gformGetOptionLabel(label_element, checkbox_item.val(), 0, form_id, field_id);
        label_element.html(label);
    });

//Radio button auto-calculating lables
    jQuery('.gfield_option' + suffix + ', .gfield_shipping_' + form_id).find('.gfield_radio').each(function(){
        var selected_price = 0;
        var radio_field = jQuery(this);
        var id = radio_field.attr('id');
        var fieldId = id.split('_')[2];
        var selected_value = radio_field.find('input:radio:checked').val();

if(selected_value)
            selected_price = gformGetPrice(selected_value);

radio_field.find('input:radio').each(function(){
            var radio_item = jQuery(this);
            var label_id = radio_item.attr('id').replace('choice_', '#label_');
            var label_element = jQuery(label_id);
            if ( label_element ) {
                var label = gformGetOptionLabel(label_element, radio_item.val(), selected_price, form_id, fieldId);
                label_element.html(label);
            }
        });
    });

var price = gformGetBasePrice(form_id, productFieldId);
	var quantity = gformGetProductQuantity( form_id, productFieldId );

//calculating options if quantity is more than 0 (a product was selected).
	if( quantity > 0 ) {

jQuery('.gfield_option' + suffix).find('input:checked, select').each(function(){
			if(!gformIsHidden(jQuery(this)))
				price += gformGetPrice(jQuery(this).val());
		});

//setting global variable if quantity is more than 0 (a product was selected). Will be used when calculating total
		_anyProductSelected = true;
	}

price = price * quantity;
    price = Math.round(price * 100) / 100;

return price;
}

function gformGetProductQuantity(formId, productFieldId) {

//If product is not selected
    if (!gformIsProductSelected(formId, productFieldId)) {
        return 0;
    }

var quantity,
        quantityInput = jQuery('#ginput_quantity_' + formId + '_' + productFieldId),
        numberFormat;

if (quantityInput.length > 0) {

quantity = quantityInput.val();

} else {

quantityInput = jQuery('.gfield_quantity_' + formId + '_' + productFieldId + ' :input');
        quantity = 1;

if (quantityInput.length > 0) {
            quantity = quantityInput.val();

var htmlId = quantityInput.attr('id'),
                fieldId = gf_get_input_id_by_html_id(htmlId);

numberFormat = gf_get_field_number_format( fieldId, formId, 'value' );
        }

}

if (!numberFormat)
        numberFormat = 'currency';

var decimalSeparator = gformGetDecimalSeparator(numberFormat);

quantity = gformCleanNumber(quantity, '', '', decimalSeparator);
    if (!quantity)
        quantity = 0;

return quantity;
}

function gformIsProductSelected( formId, productFieldId ) {

var suffix = "_" + formId + "_" + productFieldId;

return false;
}

function gformGetBasePrice(formId, productFieldId){

var suffix = "_" + formId + "_" + productFieldId;
    var price = 0;
    var productField = jQuery("#ginput_base_price" + suffix+ ", .gfield_donation" + suffix + " input[type=\"text\"], .gfield_product" + suffix + " .ginput_amount");
    if(productField.length > 0){
        price = productField.val();

//If field is hidden by conditional logic, don't count it for the total
        if(gformIsHidden(productField)){
            price = 0;
        }
    }
    else
    {
        productField = jQuery(".gfield_product" + suffix + " select, .gfield_product" + suffix + " input:checked, .gfield_donation" + suffix + " select, .gfield_donation" + suffix + " input:checked");
        var val = productField.val();
        if(val){
            val = val.split("|");
            price = val.length > 1 ? val[1] : 0;
        }

//If field is hidden by conditional logic, don't count it for the total
        if(gformIsHidden(productField))
            price = 0;

}

var c = new Currency(gf_global.gf_currency_config);
    price = c.toNumber(price);
    return price === false ? 0 : price;
}

function gformFormatMoney(text, isNumeric){
    if(!gf_global.gf_currency_config)
        return text;

var currency = new Currency(gf_global.gf_currency_config);
    return currency.toMoney(text, isNumeric);
}

function gformFormatPricingField(element){
    if(gf_global.gf_currency_config){
        var currency = new Currency(gf_global.gf_currency_config);
        var price = currency.toMoney(jQuery(element).val());
        jQuery(element).val(price);
    }
}

function gformToNumber(text){
    var currency = new Currency(gf_global.gf_currency_config);
    return currency.toNumber(text);
}

function gformGetPriceDifference(currentPrice, newPrice){

//getting price difference
    var diff = parseFloat(newPrice) - parseFloat(currentPrice);
    price = gformFormatMoney(diff, true);
    if(diff > 0)
        price = "+" + price;

return price;
}

function gformGetOptionLabel(element, selected_value, current_price, form_id, field_id){
    element = jQuery(element);
    var price = gformGetPrice(selected_value);
    var current_diff = element.attr('price');
    var original_label = element.html().replace(/<span(.*)<\/span>/i, "").replace(current_diff, "");

var diff = gformGetPriceDifference(current_price, price);
    diff = gformToNumber(diff) == 0 ? "" : " " + diff;
    element.attr('price', diff);

//don't add <span> for drop down items (not supported)
    var price_label = element[0].tagName.toLowerCase() == "option" ? " " + diff : "<span class='ginput_price'>" + diff + "</span>";
    var label = original_label + price_label;

//calling hook to allow for custom option formatting
    if(window["gform_format_option_label"])
        label = gform_format_option_label(label, original_label, price_label, current_price, price, form_id, field_id);

return label;
}

function gformGetPrice(text){
    var val = text.split("|");
    var currency = new Currency(gf_global.gf_currency_config);

if(val.length > 1 && currency.toNumber(val[1]) !== false)
         return currency.toNumber(val[1]);

return 0;
}

function gformRegisterPriceField(item){

if(!_gformPriceFields[item.formId])
        _gformPriceFields[item.formId] = new Array();

//ignore price fields that have already been registered
    for(var i=0; i<_gformPriceFields[item.formId].length; i++)
        if(_gformPriceFields[item.formId][i] == item.productFieldId)
            return;

//registering new price field
    _gformPriceFields[item.formId].push(item.productFieldId);
}

function gformInitPriceFields(){

jQuery(".gfield_price").each(function(){

var productIds = gformGetProductIds("gfield_price", this);
        gformRegisterPriceField(productIds);

jQuery( this ).on( 'change', 'input[type="text"], input[type="number"], select', function() {

var productIds = gformGetProductIds("gfield_price", this);
           if(productIds.formId == 0)
                productIds = gformGetProductIds("gfield_shipping", this);

jQuery(document).trigger('gform_price_change', [productIds, this]);
           gformCalculateTotalPrice(productIds.formId);
       });

jQuery( this ).on( 'click', 'input[type="radio"], input[type="checkbox"]', function() {

var productIds = gformGetProductIds("gfield_price", this);
           if(productIds.formId == 0)
                productIds = gformGetProductIds("gfield_shipping", this);

jQuery(document).trigger('gform_price_change', [productIds, this]);
           gformCalculateTotalPrice(productIds.formId);
       });

});

for(formId in _gformPriceFields){

//needed when implementing for in loops
        if(!_gformPriceFields.hasOwnProperty(formId))
            continue;

gformCalculateTotalPrice(formId);
    }

}

//-------------------------------------------
//---------- PASSWORD -----------------------
//-------------------------------------------
function gformShowPasswordStrength(fieldId){
    var password = jQuery("#" + fieldId).val();
    var confirm = jQuery("#" + fieldId + "_2").val();

var result = gformPasswordStrength(password, confirm);

var text = window['gf_text']["password_" + result];

jQuery("#" + fieldId + "_strength").val(result);
    jQuery("#" + fieldId + "_strength_indicator").removeClass("blank mismatch short good bad strong").addClass(result).html(text);
}

// Password strength meter
function gformPasswordStrength(password1, password2) {
    var shortPass = 1, badPass = 2, goodPass = 3, strongPass = 4, mismatch = 5, symbolSize = 0, natLog, score;

if(password1.length <=0)
        return "blank";

// password 1 != password 2
    if ( (password1 != password2) && password2.length > 0)
        return "mismatch";

//password < 4
    if ( password1.length < 4 )
        return "short";

if ( password1.match(/[0-9]/) )
        symbolSize +=10;
    if ( password1.match(/[a-z]/) )
        symbolSize +=26;
    if ( password1.match(/[A-Z]/) )
        symbolSize +=26;
    if ( password1.match(/[^a-zA-Z0-9]/) )
        symbolSize +=31;

natLog = Math.log( Math.pow(symbolSize, password1.length) );
    score = natLog / Math.LN2;

if (score < 40 )
        return "bad";

if (score < 56 )
        return "good";

return "strong";

}

//----------------------------
//------ LIST FIELD ----------
//----------------------------

function gformAddListItem( addButton, max ) {

var $addButton = jQuery( addButton );

if( $addButton.hasClass( 'gfield_icon_disabled' ) ) {
        return;
    }

var $group     = $addButton.parents( '.gfield_list_group' ),
        $clone     = $group.clone(),
        $container = $group.parents( '.gfield_list_container' ),
        tabindex   = $clone.find( ':input:last' ).attr( 'tabindex' );

// reset all inputs to empty state
    $clone
        .find( 'input, select' ).attr( 'tabindex', tabindex )
        .not( ':checkbox, :radio' ).val( '' );
    $clone.find( ':checkbox, :radio' ).prop( 'checked', false );

$clone = gform.applyFilters( 'gform_list_item_pre_add', $clone, $group );

$group.after( $clone );

gformToggleIcons( $container, max );
    gformAdjustClasses( $container );

}

function gformDeleteListItem( deleteButton, max ) {

var $deleteButton = jQuery( deleteButton ),
        $group        = $deleteButton.parents( '.gfield_list_group' ),
        $container    = $group.parents( '.gfield_list_container' );

$group.remove();

gformToggleIcons( $container, max );
    gformAdjustClasses( $container );

}

function gformAdjustClasses( $container ) {

var $groups = $container.find( '.gfield_list_group' );

$groups.each( function( i ) {

var $group       = jQuery( this ),
            oddEvenClass = ( i + 1 ) % 2 == 0 ? 'gfield_list_row_even' : 'gfield_list_row_odd';

$group.removeClass( 'gfield_list_row_odd gfield_list_row_even' ).addClass( oddEvenClass );

} );

}

function gformToggleIcons( $container, max ) {

var groupCount  = $container.find( '.gfield_list_group' ).length,
        $addButtons = $container.find( '.add_list_item' );

$container.find( '.delete_list_item' ).css( 'visibility', groupCount == 1 ? 'hidden' : 'visible' );

if ( max > 0 && groupCount >= max ) {

// store original title in the add button
        $addButtons.data( 'title', $container.find( '.add_list_item' ).attr( 'title' ) );
        $addButtons.addClass( 'gfield_icon_disabled' ).attr( 'title', '' );

} else if( max > 0 ) {

$addButtons.removeClass( 'gfield_icon_disabled' );

if( $addButtons.data( 'title' ) )   {
            $addButtons.attr( 'title', $addButtons.data( 'title' ) );
        }

}
}

//-----------------------------------
//------ CREDIT CARD FIELD ----------
//-----------------------------------
function gformMatchCard(id) {

var cardType = gformFindCardType(jQuery('#' + id).val());
    var cardContainer = jQuery('#' + id).parents('.gfield').find('.gform_card_icon_container');

if(!cardType) {

jQuery(cardContainer).find('.gform_card_icon').removeClass('gform_card_icon_selected gform_card_icon_inactive');

} else {

jQuery(cardContainer).find('.gform_card_icon').removeClass('gform_card_icon_selected').addClass('gform_card_icon_inactive');
        jQuery(cardContainer).find('.gform_card_icon_' + cardType).removeClass('gform_card_icon_inactive').addClass('gform_card_icon_selected');
    }
}

function gformFindCardType(value) {

if(value.length < 4)
        return false;

var rules = window['gf_cc_rules'];
    var validCardTypes = new Array();

for(type in rules) {

//needed when implementing for in loops
        if(!rules.hasOwnProperty(type))
            continue;

for(i in rules[type]) {

if(!rules[type].hasOwnProperty(i))
                continue;

if(rules[type][i].indexOf(value.substring(0, rules[type][i].length)) === 0) {
                validCardTypes[validCardTypes.length] = type;
                break;
            }

}
    }

return validCardTypes.length == 1 ? validCardTypes[0].toLowerCase() : false;
}

function gformToggleCreditCard(){
    if(jQuery("#gform_payment_method_creditcard").is(":checked"))
        jQuery(".gform_card_fields_container").slideDown();
    else
        jQuery(".gform_card_fields_container").slideUp();
}

//----------------------------------------
//------ CHOSEN DROP DOWN FIELD ----------
//----------------------------------------

function gformInitChosenFields(fieldList, noResultsText){
    return jQuery(fieldList).each(function(){

var element = jQuery( this );

// RTL support
        if( jQuery( 'html' ).attr( 'dir' ) == 'rtl' ) {
            element.addClass( 'chosen-rtl chzn-rtl' );
        }

// only initialize once
        if( element.is(":visible") && element.siblings(".chosen-container").length == 0 ){
            var options = gform.applyFilters( 'gform_chosen_options', { no_results_text: noResultsText }, element );
            element.chosen( options );
        }

});
}

//----------------------------------------
//--- CURRENCY FORMAT NUMBER FIELD -------
//----------------------------------------

//----------------------------------------
//------ CALCULATION FUNCTIONS -----------
//----------------------------------------

var GFCalc = function(formId, formulaFields){

this.patt = /{[^{]*?:(\d+(\.\d+)?)(:(.*?))?}/i;
    this.exprPatt = /^[0-9 -/*]+$/i;
    this.isCalculating = {};

this.init = function(formId, formulaFields) {

for(var i=0; i<formulaFields.length; i++) {
            var formulaField = jQuery.extend({}, formulaFields[i]);
            this.runCalc(formulaField, formId);
            this.bindCalcEvents(formulaField, formId);
        }

}

this.runCalc = function(formulaField, formId) {

var calcObj      = this,
            field        = jQuery('#field_' + formId + '_' + formulaField.field_id),
            formulaInput = jQuery('#input_' + formId + '_' + formulaField.field_id),
            previous_val = formulaInput.val(),
            formula      = gform.applyFilters( 'gform_calculation_formula', formulaField.formula, formulaField, formId, calcObj ),
            expr         = calcObj.replaceFieldTags( formId, formula, formulaField ).replace(/(\r\n|\n|\r)/gm,""),
            result       = '';

if(calcObj.exprPatt.test(expr)) {
            try {

//run calculation
                result = eval(expr);

} catch( e ) { }
        }

// if result is positive infinity, negative infinity or a NaN, defaults to 0
        if( ! isFinite( result ) )
            result = 0;

// allow users to modify result with their own function
        if( window["gform_calculation_result"] ) {
            result = window["gform_calculation_result"](result, formulaField, formId, calcObj);
            if( window.console )
                console.log( '"gform_calculation_result" function is deprecated since version 1.8! Use "gform_calculation_result" JS hook instead.' );
        }

// allow users to modify result with their own function
        result = gform.applyFilters( 'gform_calculation_result', result, formulaField, formId, calcObj );

// allow result to be custom formatted
        var formattedResult = gform.applyFilters( 'gform_calculation_format_result', false, result, formulaField, formId, calcObj );

var numberFormat = gf_get_field_number_format(formulaField.field_id, formId);

//formatting number
        if( formattedResult !== false) {
            result = formattedResult;
        }
        else if( field.hasClass( 'gfield_price' ) || numberFormat == "currency") {

result = gformFormatMoney(result ? result : 0, true);
        }
        else {

var decimalSeparator = ".";
            var thousandSeparator = ",";

if(numberFormat == "decimal_comma"){
                decimalSeparator = ",";
                thousandSeparator = ".";
            }

result = gformFormatNumber(result, !gformIsNumber(formulaField.rounding) ? -1 : formulaField.rounding, decimalSeparator, thousandSeparator);
        }

//If value doesn't change, abort.
        //This is needed to prevent an infinite loop condition with conditional logic
        if( result == previous_val )
            return;

// if this is a calculation product, handle differently
        if(field.hasClass('gfield_price')) {
            formulaInput.text(result);
            jQuery('#ginput_base_price_' + formId + '_' + formulaField.field_id).val(result).trigger('change');
            gformCalculateTotalPrice(formId);
        } else {
            formulaInput.val(result).trigger('change');
        }

}

this.bindCalcEvents = function(formulaField, formId) {

var calcObj = this;
        var formulaFieldId = formulaField.field_id;
        var matches = getMatchGroups(formulaField.formula, this.patt);

calcObj.isCalculating[formulaFieldId] = false;

for(var i in matches) {

if(! matches.hasOwnProperty(i))
                continue;

var inputId = matches[i][1];
            var fieldId = parseInt(inputId);
            var input = jQuery('#field_' + formId + '_' + fieldId).find('input[name="input_' + inputId + '"], select[name="input_' + inputId + '"]');

if(input.prop('type') == 'checkbox' || input.prop('type') == 'radio') {
                jQuery(input).click(function(){
                    calcObj.bindCalcEvent(inputId, formulaField, formId, 0);
                });
            } else
            if(input.is('select') || input.prop('type') == 'hidden') {
                jQuery(input).change(function(){
                    calcObj.bindCalcEvent(inputId, formulaField, formId, 0);
                });
            } else {
                jQuery(input).keydown(function(){
                    calcObj.bindCalcEvent(inputId, formulaField, formId);
                }).change(function(){
                    calcObj.bindCalcEvent(inputId, formulaField, formId, 0);
                });
            }

// allow users to add custom methods for triggering calculations
            gform.doAction( 'gform_post_calculation_events', matches[i], formulaField, formId, calcObj );

}

this.bindCalcEvent = function(inputId, formulaField, formId, delay) {

var calcObj = this;
        var formulaFieldId = formulaField.field_id;

delay = delay == undefined ? 345 : delay;

if(calcObj.isCalculating[formulaFieldId][inputId])
            clearTimeout(calcObj.isCalculating[formulaFieldId][inputId]);

calcObj.isCalculating[formulaFieldId][inputId] = window.setTimeout(function() {
            calcObj.runCalc(formulaField, formId);
        }, delay);

}

this.replaceFieldTags = function( formId, expr, formulaField ) {

var matches = getMatchGroups(expr, this.patt);
        var origExpr = expr;

for(i in matches) {

if(! matches.hasOwnProperty(i))
                continue;

var inputId = matches[i][1];
            var fieldId = parseInt(inputId);
            var columnId = matches[i][3];
            var value = 0;

var input = jQuery('#field_' + formId + '_' + fieldId).find('input[name="input_' + inputId + '"], select[name="input_' + inputId + '"]');

// radio buttons will return multiple inputs, checkboxes will only return one but it may not be selected, filter out unselected inputs
            if( input.length > 1 || input.prop('type') == 'checkbox' )
                input = input.filter(':checked');

var isVisible = window['gf_check_field_rule'] ? gf_check_field_rule( formId, fieldId, true, '' ) == 'show' : true;

if( input.length > 0 && isVisible ) {

var val = input.val();
                val = val.split( '|' );

if( val.length > 1 ) {
                    value = val[1];
                } else {
                    value = input.val();
                }

}

var numberFormat = gf_get_field_number_format( fieldId, formId );
            if( ! numberFormat )
                numberFormat = gf_get_field_number_format( formulaField.field_id, formId );

var decimalSeparator = gformGetDecimalSeparator(numberFormat);

// allow users to modify value with their own function
            value = gform.applyFilters( 'gform_merge_tag_value_pre_calculation', value, matches[i], isVisible, formulaField, formId );

value = gformCleanNumber( value, '', '', decimalSeparator );
            if( ! value )
                value = 0;

expr = expr.replace( matches[i][0], value );
        }

return expr;
    }

this.init(formId, formulaFields);

}

function gformFormatNumber(number, rounding, decimalSeparator, thousandSeparator){

if(typeof decimalSeparator == "undefined"){
        if(window['gf_global']){
            var currency = new Currency(gf_global.gf_currency_config);
            decimalSeparator = currency.currency["decimal_separator"];
        }
        else{
            decimalSeparator = ".";
        }
    }

if(typeof thousandSeparator == "undefined"){
        if(window['gf_global']){
            var currency = new Currency(gf_global.gf_currency_config);
            thousandSeparator = currency.currency["thousand_separator"];
        }
        else{
            thousandSeparator = ",";
        }
    }

var currency = new Currency();
    return currency.numberFormat(number, rounding, decimalSeparator, thousandSeparator, false)
}

function gformToNumber(text) {
    var currency = new Currency(gf_global.gf_currency_config);
    return currency.toNumber(text);
}

function getMatchGroups(expr, patt) {

var matches = new Array();

while(patt.test(expr)) {

var i = matches.length;
        matches[i] = patt.exec(expr)
        expr = expr.replace('' + matches[i][0], '');

}

return matches;
}

function gf_get_field_number_format(fieldId, formId, context) {

var fieldNumberFormats = rgars(window, 'gf_global/number_formats/{0}/{1}'.format(formId, fieldId)),
        format = false;

if (fieldNumberFormats === '') {
        return format;
    }

if (typeof context == 'undefined') {
        format = fieldNumberFormats.price !== false ? fieldNumberFormats.price : fieldNumberFormats.value;
    } else {
        format = fieldNumberFormats[context];
    }

return format;
}

//----------------------------------------
//------ JAVASCRIPT HOOK FUNCTIONS -------
//----------------------------------------

gform.hooks[hookType][action].push( { tag:tag, callable:callable, priority:priority } );
	},
	doHook: function( hookType, action, args ) {

// splice args from object into array and remove first index which is the hook name
        args = Array.prototype.slice.call(args, 1);

if ( undefined != gform.hooks[hookType][action] ) {
			var hooks = gform.hooks[hookType][action], hook;
			//sort by priority
			hooks.sort(function(a,b){return a["priority"]-b["priority"]});
			for( var i=0; i<hooks.length; i++) {
                hook = hooks[i].callable;
                if(typeof hook != 'function')
                    hook = window[hook];
				if ( 'action' == hookType ) {
                    hook.apply(null, args);
				} else {
                    args[0] = hook.apply(null, args);
				}
			}
		}
		if ( 'filter'==hookType ) {
			return args[0];
		}
	},
	removeHook: function( hookType, action, priority, tag ) {
		if ( undefined != gform.hooks[hookType][action] ) {
			var hooks = gform.hooks[hookType][action];
			for( var i=hooks.length-1; i>=0; i--) {
				if ((undefined==tag||tag==hooks[i].tag) && (undefined==priority||priority==hooks[i].priority)){
					hooks.splice(i,1);
				}
			}
		}
	}
};

//----------------------------------------
//------ reCAPTCHA FUNCTIONS -------------
//----------------------------------------

/**
 * Callback function on the reCAPTCAH API script.
 *
 * @see GF_Field_CAPTCHA::get_field_input() in /includes/fields/class-gf-field-catpcha.php
 */
function renderRecaptcha() {

jQuery( '.ginput_recaptcha' ).each( function() {

var $elem      = jQuery( this ),
            parameters = {
                'sitekey': $elem.data( 'sitekey' ),
                'theme':   $elem.data( 'theme' )
            };

if( ! $elem.is( ':empty' ) ) {
            return;
        }

if( $elem.data( 'stoken' ) ) {
            parameters.stoken = $elem.data( 'stoken' );
        }

grecaptcha.render( this.id, parameters );

gform.doAction( 'gform_post_recaptcha_render', $elem );

} );

}

//----------------------------------------
//----- SINGLE FILE UPLOAD FUNCTIONS -----
//----------------------------------------

} else {
		
		// Reset validation message.
		validation_element.html( '' );
		
	}
	
}

//----------------------------------------
//------ MULTIFILE UPLOAD FUNCTIONS ------
//----------------------------------------

(function (gfMultiFileUploader, $) {
    gfMultiFileUploader.uploaders = {};
    var strings = typeof gform_gravityforms != 'undefined' ? gform_gravityforms.strings : {};
    var imagesUrl = typeof gform_gravityforms != 'undefined' ? gform_gravityforms.vars.images_url : "";

$(document).bind('gform_post_render', function(e, formID){

$("form#gform_" + formID + " .gform_fileupload_multifile").each(function(){
			setup(this);
		});
		var $form = $("form#gform_" + formID);
		if($form.length > 0){
			$form.submit(function(){
				var pendingUploads = false;
				$.each(gfMultiFileUploader.uploaders, function(i, uploader){
					if(uploader.total.queued>0){
						pendingUploads = true;
						return false;
					}
				});
				if(pendingUploads){
					alert(strings.currently_uploading);
					window["gf_submitting_" + formID] = false;
					$('#gform_ajax_spinner_' + formID).remove();
					return false;
				}
			});
		}

});

$(document).bind("gform_post_conditional_logic", function(e,formID, fields, isInit){
		if(!isInit){
			$.each(gfMultiFileUploader.uploaders, function(i, uploader){
				uploader.refresh();
			});
		}
	});

$(document).ready(function () {
        if((typeof adminpage !== 'undefined' && adminpage === 'toplevel_page_gf_edit_forms')|| typeof plupload == 'undefined'){
            $(".gform_button_select_files").prop("disabled", true);
        } else if (typeof adminpage !== 'undefined' && adminpage.indexOf('_page_gf_entries') > -1) {
            $(".gform_fileupload_multifile").each(function(){
                setup(this);
            });
        }
    });

gfMultiFileUploader.setup = function (uploadElement){
        setup( uploadElement );
    };

function setup(uploadElement){
        var settings = $(uploadElement).data('settings');

var uploader = new plupload.Uploader(settings);
        formID = uploader.settings.multipart_params.form_id;
        gfMultiFileUploader.uploaders[settings.container] = uploader;
        var formID;
        var uniqueID;

uploader.bind('Init', function(up, params) {
            if(!up.features.dragdrop)
                $(".gform_drop_instructions").hide();
            var fieldID = up.settings.multipart_params.field_id;
            var maxFiles = parseInt(up.settings.gf_vars.max_files);
            var initFileCount = countFiles(fieldID);
            if(maxFiles > 0 && initFileCount >= maxFiles){
                gfMultiFileUploader.toggleDisabled(up.settings, true);
            }

});

gfMultiFileUploader.toggleDisabled = function (settings, disabled){

var button = typeof settings.browse_button == "string" ? $("#" + settings.browse_button) : $(settings.browse_button);
            button.prop("disabled", disabled);
        };

function addMessage(messagesID, message){
            $("#" + messagesID).prepend("<li>" + message + "</li>");
        }

uploader.init();

uploader.bind('FilesAdded', function(up, files) {
            var max = parseInt(up.settings.gf_vars.max_files),
                fieldID = up.settings.multipart_params.field_id,
                totalCount = countFiles(fieldID),
                disallowed = up.settings.gf_vars.disallowed_extensions,
                extension;

if( max > 0 && totalCount >= max){
                $.each(files, function(i, file) {
                    up.removeFile(file);
                    return;
                });
                return;
            }
            $.each(files, function(i, file) {

extension = file.name.split('.').pop();

if($.inArray(extension, disallowed) > -1){
                    addMessage(up.settings.gf_vars.message_id, file.name + " - " + strings.illegal_extension);
                    up.removeFile(file);
                    return;
                }

if ((file.status == plupload.FAILED) || (max > 0 && totalCount >= max)){
                    up.removeFile(file);
                    return;
                }

var size = typeof file.size !== 'undefined' ? plupload.formatSize(file.size) : strings.in_progress;
                var status = '<div id="'
                    + file.id
                    + '" class="ginput_preview">'
                    + file.name
                    + ' (' + size + ') <b></b> '
                    + '<a href="javascript:void(0)" title="' + strings.cancel_upload + '" onclick=\'$this=jQuery(this); var uploader = gfMultiFileUploader.uploaders.' + up.settings.container + ';uploader.stop();uploader.removeFile(uploader.getFile("' + file.id +'"));$this.after("' + strings.cancelled + '"); uploader.start();$this.remove();\' onkeypress=\'$this=jQuery(this); var uploader = gfMultiFileUploader.uploaders.' + up.settings.container + ';uploader.stop();uploader.removeFile(uploader.getFile("' + file.id +'"));$this.after("' + strings.cancelled + '"); uploader.start();$this.remove();\'>' + strings.cancel + '</a>'
                    + '</div>';

$('#' + up.settings.filelist).prepend(status);
                totalCount++;

});

up.refresh(); // Reposition Flash

var formElementID = "form#gform_" + formID;
            var uidElementID = "input:hidden[name='gform_unique_id']";
            var uidSelector = formElementID + " " + uidElementID;
            var $uid = $(uidSelector);
            if($uid.length==0){
                $uid = $(uidElementID);
            }

uniqueID = $uid.val();
            if('' === uniqueID){
                uniqueID = generateUniqueID();
                $uid.val(uniqueID);
            }

if(max > 0 && totalCount >= max){
                gfMultiFileUploader.toggleDisabled(up.settings, true);
                addMessage(up.settings.gf_vars.message_id, strings.max_reached)
            }

up.settings.multipart_params.gform_unique_id = uniqueID;
            up.start();

});

uploader.bind('UploadProgress', function(up, file) {
            var html = file.percent + "%";
            $('#' + file.id + " b").html(html);
        });

uploader.bind('Error', function(up, err) {
            if(err.code === plupload.FILE_EXTENSION_ERROR){
                var extensions = typeof up.settings.filters.mime_types != 'undefined' ? up.settings.filters.mime_types[0].extensions /* plupoad 2 */ : up.settings.filters[0].extensions;
                addMessage(up.settings.gf_vars.message_id, err.file.name + " - " + strings.invalid_file_extension + " " + extensions);
            } else if (err.code === plupload.FILE_SIZE_ERROR) {
                addMessage(up.settings.gf_vars.message_id, err.file.name + " - " + strings.file_exceeds_limit);
            } else {
                var m = "<li>Error: " + err.code +
                    ", Message: " + err.message +
                    (err.file ? ", File: " + err.file.name : "") +
                    "</li>";

addMessage(up.settings.gf_vars.message_id, m);
            }
            $('#' + err.file.id ).html('');

up.refresh(); // Reposition Flash
        });

uploader.bind('FileUploaded', function(up, file, result) {
            var response = $.secureEvalJSON(result.response);
            if(response.status == "error"){
                addMessage(up.settings.gf_vars.message_id, file.name + " - " + response.error.message);
                $('#' + file.id ).html('');
                return;
            }

var html = '<strong>' + file.name + '</strong>';
            var formId = up.settings.multipart_params.form_id;
            var fieldId = up.settings.multipart_params.field_id;
            html = "<img "
                + "class='gform_delete' "
                + "src='" + imagesUrl + "/delete.png' "
                + "onclick='gformDeleteUploadedFile(" + formId + "," + fieldId + ", this);' "
                + "onkeypress='gformDeleteUploadedFile(" + formId + "," + fieldId + ", this);' "
                + "alt='"+ strings.delete_file + "' "
                + "title='" + strings.delete_file
                + "' /> "
                + html;

html = gform.applyFilters( 'gform_file_upload_markup', html, file, up, strings, imagesUrl );

$( '#' + file.id ).html( html );

var fieldID = up.settings.multipart_params["field_id"];

if(file.percent == 100){
                if(response.status && response.status == 'ok'){
                    addFile(fieldID, response.data);
                }  else {
                    addMessage(up.settings.gf_vars.message_id, strings.unknown_error + ': ' + file.name);
                }
            }

});

function getAllFiles(){
			var selector = '#gform_uploaded_files_' + formID,
				$uploadedFiles = $(selector), files;

files = $uploadedFiles.val();
			files = (typeof files === "undefined") || files === '' ? {} : $.parseJSON(files);

return files;
		}

function getFiles(fieldID){
            var allFiles = getAllFiles();
            var inputName = getInputName(fieldID);

if(typeof allFiles[inputName] == 'undefined')
                allFiles[inputName] = [];
            return allFiles[inputName];
        }

function countFiles(fieldID){
            var files = getFiles(fieldID);
            return files.length;
        }

function addFile(fieldID, fileInfo){

var files = getFiles(fieldID);

files.unshift(fileInfo);
            setUploadedFiles(fieldID, files);
        }

function setUploadedFiles(fieldID, files){
            var allFiles = getAllFiles();
            var $uploadedFiles = $('#gform_uploaded_files_' + formID);
            var inputName = getInputName(fieldID);
            allFiles[inputName] = files;
            $uploadedFiles.val($.toJSON(allFiles));
        }

function getInputName(fieldID){
            return "input_" + fieldID;
        }

// fixes drag and drop in IE10
        $("#" + settings.drop_element).on({
            "dragenter": ignoreDrag,
            "dragover": ignoreDrag
        });

function ignoreDrag( e ) {
            e.preventDefault();
        }
    }

function generateUniqueID() {
        return 'xxxxxxxx'.replace(/[xy]/g, function (c) {
            var r = Math.random() * 16 | 0, v = c == 'x' ? r : r & 0x3 | 0x8;
            return v.toString(16);
        });
    }

}(window.gfMultiFileUploader = window.gfMultiFileUploader || {}, jQuery));

//----------------------------------------
//------ GENERAL FUNCTIONS -------
//----------------------------------------

function gformInitSpinner( formId, spinnerUrl ) {

if( typeof spinnerUrl == 'undefined' || ! spinnerUrl ) {
        spinnerUrl = gform.applyFilters( "gform_spinner_url", gf_global.spinnerUrl, formId );
    }

jQuery('#gform_' + formId).submit( function () {
		if ( jQuery('#gform_ajax_spinner_' + formId).length == 0 ) {
            /**
             * Filter the element after which the AJAX spinner will be inserted.
             *
             * @since 2.0
             *
             * @param object $targetElem jQuery object containing all of the elements after which the AJAX spinner will be inserted.
             * @param int    formId      ID of the current form.
             */
            var $spinnerTarget = gform.applyFilters( 'gform_spinner_target_elem', jQuery('#gform_submit_button_' + formId + ', #gform_wrapper_' + formId + ' .gform_next_button, #gform_send_resume_link_button_' + formId ), formId );
            $spinnerTarget.after( '<img id="gform_ajax_spinner_' + formId + '"  class="gform_ajax_spinner" src="' + spinnerUrl + '" alt="" />' );
		}
	} );

}

//----------------------------------------
//------ EVENT FUNCTIONS -----------------
//----------------------------------------

var __gf_keyup_timeout;

jQuery( document ).on( 'change keyup', '.gfield_trigger_change input, .gfield_trigger_change select, .gfield_trigger_change textarea', function( event ) {
    gf_raw_input_change( event, this );
} );

function gf_raw_input_change( event, elem ) {

// clear regardless of event type for maximum efficiency ;)
    clearTimeout( __gf_keyup_timeout );

var $input  = jQuery( elem ),
        htmlId  = $input.attr( 'id' ),
        fieldId = gf_get_input_id_by_html_id( htmlId ),
        formId  = gf_get_form_id_by_html_id( htmlId );

if( ! fieldId ) {
        return;
    }

var isChangeElem = $input.is( ':checkbox' ) || $input.is( ':radio' ) || $input.is( 'select' ),
        isKeyupElem  = ! isChangeElem || $input.is( 'textarea' );

if( event.type == 'keyup' && ! isKeyupElem ) {
        return;
    } else if( event.type == 'change' && ! isChangeElem && ! isKeyupElem ) {
        return;
    }

if( event.type == 'keyup' ) {
        __gf_keyup_timeout = setTimeout( function() {
            gf_input_change( this, formId, fieldId );
        }, 300 );
    } else {
        gf_input_change( this, formId, fieldId );
    }

}

function gf_get_input_id_by_html_id( htmlId ) {

var ids = gf_get_ids_by_html_id( htmlId ),
        id  = ids[2];

if( ids[3] ) {
        id += '.' + ids[3];
    }

return id;
}

function gf_get_form_id_by_html_id( htmlId ) {
    var ids = gf_get_ids_by_html_id( htmlId ),
        id  = ids[1];
    return id;
}

function gf_get_ids_by_html_id( htmlId ) {
    var ids = htmlId ? htmlId.split( '_' ) : false;
    return ids;
}

function gf_input_change( elem, formId, fieldId ) {
    gform.doAction( 'gform_input_change', elem, formId, fieldId );
}

function gformExtractFieldId( inputId ) {
    var fieldId = parseInt( inputId.toString().split( '.' )[0] );
    return ! fieldId ? inputId : fieldId;
}

function gformExtractInputIndex( inputId ) {
    var inputIndex = parseInt( inputId.toString().split( '.' )[1] );
    return ! inputIndex ? false : inputIndex;
}

//----------------------------------------
//------ HELPER FUNCTIONS ----------------
//----------------------------------------

if( ! window['rgars'] ) {
    function rgars( array, prop ) {

var props = prop.split( '/' ),
            value = array;

for( var i = 0; i < props.length; i++ ) {
            value = rgar( value, props[ i ] );
        }

return value;
    }
}

if( ! window['rgar'] ) {
    function rgar( array, prop ) {
        if ( typeof array[ prop ] != 'undefined' ) {
            return array[ prop ];
        }
        return '';
    }
}

String.prototype.format = function () {
    var args = arguments;
    return this.replace(/{(\d+)}/g, function (match, number) {
        return typeof args[number] != 'undefined' ? args[number] : match;
    });
};

MR SKB