Example of adding REC_CLICK event handling to reco-box. Just an idea, not suggestion for implementation

category_filter.js

    _gravity.push({type : 'recommendation',
        callback: callback_fn,
        numberLimit: 4,
        scenarioId: "CATEGORY_PAGE",
        currentItemId: "xxx",
        itemOnPage: [],                  // [] of itemIds already displayed on the page
        resultNames: ["itemId"],

        // фильтр по категории
        // т.е. мы хотим получить реко на товары из категории 1
        categoryId: "1"
    });

rec_click.js

// Example of adding REC_CLICK event handling to reco-box
// Just an idea, not suggestion for implementation

var i = 0;

$("t20_goods_block").each(function(){
    $(this).mousedown(function(){
            _gravity = _gravity || [];
            _gravity.push({
                type: 'event',
                eventType: 'REC_CLICK',
                // result is data received in recommendation request
                // for own reco-boxes that don't use gravity, a fixed value is used
                // e.g. recommendationId: "OWN_ITEM_PAGE",
                recommendationId: result.recommendationId,
                itemId: result.items[i].itemid,
            });
    });
    i++;
});