$parent.toggleClass('expanded');

        $parent.find('.toggle-content').slideToggle();

        // if control has HTML5 data attributes, use to update text

        if ($parent.hasClass('expanded')) {

            $control.html($control.attr('data-expanded-text'));

        } else {

            $control.html($control.attr('data-text'));

        }

    });

    $('a.donate-now')

      .addClass('clickable')

      .bind('click', function() {

        var $control = $('#donate-box');

        $control.toggleClass('expanded');

        $control.find('.toggle-content').slideUp("slow");

        $control.find('.toggle-content').slideDown("slow");

    });

    $('#amount').on('input', function() {

        var input=$(this);

        var value = input.val();

        var errorElement=$("span", input.parent());

        var isValid = (re.test(value) && parseInt(value) >= 120);

        if (isValid)  {

           input.removeClass("invalid").addClass("valid");

           errorElement.removeClass("form-error-show").addClass("form-error");

        }

        else {

            input.removeClass("valid").addClass("invalid");

            errorElement.removeClass("form-error").addClass("form-error-show");

        }

    });

    /* Handle toggling of annual/monthly form selections */

    $('.supporter-type-selection#monthly').hide();

    $('#annualSelector').css("font-weight", "bold").css("font-size", "127%");

    $("a[href$='monthly']").bind('click', function() {

        $('.supporter-type-selection#annual').hide();

        $('.supporter-type-selection#monthly').show();

        $('#monthlySelector').css("font-weight", "bold").css("font-size", "127%");

        $('#annualSelector').css("font-weight", "normal").css("font-size", "125%");

    });

    $("a[href$='annual']").bind('click', function() {

        $('.supporter-type-selection#annual').show();

        $('.supporter-type-selection#monthly').hide();

        $('#annualSelector').css("font-weight", "bold").css("font-size", "127%");