public function moveLeft() //#777C
    {
        $sArticleId = \OxidEsales\Eshop\Core\Registry::getConfig()->getRequestParameter('aid');
        if ($sArticleId && ($aItems = $this->getCompareItems())) {
            $sPrevArticleId = null;

            $blFound = false;
            foreach ($aItems as $sOxid => $sVal) {
                if ($sOxid == $sArticleId) {
                    $blFound = true;
                }
                if (!$blFound) {
                    $sPrevArticleId = $sOxid;
                }
            }

            if ($sPrevArticleId) {
                $aNewItems = [];
                foreach ($aItems as $sOxid => $sVal) {
                    if ($sOxid == $sPrevArticleId) {
                        $aNewItems[$sArticleId] = true;
                    } elseif ($sOxid == $sArticleId) {
                        $aNewItems[$sPrevArticleId] = true;
                    } else {
                        $aNewItems[$sOxid] = true;
                    }
                }

                $this->setCompareItems($aNewItems);
            }
        }
    }