         let leftQueryElt = addQueryInternal(queriesLeft, queryInfo, openLeftTable);
            let rightQueryElt = addQueryInternal(queriesRight, queryInfo, openRightTable);
            configs[queryInfo.serial] = {info:queryInfo, leftElt:leftQueryElt, rightElt:rightQueryElt};
        }
        function addQueryInternal(queriesElement, queryInfo, openTable) {
            console.log("config added: " + queryInfo.name);

            var queryElt = document.createElement('li');

            queryElt.innerTex