Открытие попап окна средствами битрикс

//Вешается на событие click
var popup = new BX.PopupWindow('popup-rejection', null, {
            lightShadow: true,
            content: '<div style="font-size: 14px; margin-top:10px;">Причина отказа</div>',
            closeIcon: {right: "20px", top: "10px"},
            titleBar: 'Причина отказа',
            zIndex: 0,
            offsetLeft: 0,
            offsetTop: 0,
            draggable: {restrict: true},
            buttons: [
                new BX.PopupWindowButton({
                    text: "Установить",
                    className: "popup-window-button-accept",
                    events: {
                        click: function () {
                            var _this = this.popupWindow;
                            BX.ajax.submit(BX("form_rejection"), function(data){
                                var dataJson = $.parseJSON(data);
                                _this.close();

                                var id = location.pathname.match(/\d+/)[0];
                                $.post('/local/ajax/lead/junk.php', {LEAD_ID: id, REJECTION: dataJson.ENUM_ID}, function (data) {
                                    location.reload(true);
                                });

                            });


                        }
                    }
                }),
                new BX.PopupWindowButton({
                    text: "Отмена",
                    className: "webform-button-link-cancel",
                    events: {
                        click: function () {
                            this.popupWindow.close();
                        }
                    }
                })
            ]
        });

BX.showWait();
//Подгрузка контента страницы
            BX.ajax({
                url: '/local/ajax/lead/change_rejection_junk.php',
                method: 'POST',
                data: {},
                dataType: 'html',
                processData: true,
                scriptsRunFirst: true,
                emulateOnload: true,
                start: true,
                cache: false,
                onsuccess: function(data){
                    popup.setContent(data);
                    popup.show();
                    BX.closeWait();
                }
            });


//php файл
<?
require($_SERVER["DOCUMENT_ROOT"]."/bitrix/modules/main/include/prolog_before.php");
?>
<div class="personal-desktop popup">
    <form action="/local/ajax/lead/change_rejection_junk.php" name="form_rejection" id="form_rejection" method="POST">

    </form>
</div>