/*Code for Google AdWords Phone Tracking Beta*/
function FormatPhoneNumber(number_string, format_string) {
    num_of_x = 0;
    for (i = 0; i < format_string.length; i++) {
        if (format_string.charAt(i) == 'x') {
            num_of_x++;
        }
    }
    if (number_string.length != num_of_x) {
        return number_string;
    }
    else {
        formatted_string = "";
        pos = 0;
        for (i = 0; i < format_string.length; i++) {
            if (format_string.charAt(i) == 'x') {
                formatted_string += number_string.charAt(pos);
                pos++;
            }
            else {
                formatted_string += format_string.charAt(i);
            }
        }
        return formatted_string;
    }
}