public string MainProductImageUrl(Store store, Product product)
        {
            string url;
            var pictureService = EngineContext.Current.Resolve<IPictureService>();
            var picture = product.GetDefaultProductPicture(pictureService);

            //always use HTTP when getting image URL
            if (picture != null)
                url = pictureService.GetPictureUrl(picture, BaseSettings.ProductPictureSize, storeLocation: store.Url);
            else
                url = pictureService.GetDefaultPictureUrl(BaseSettings.ProductPictureSize, storeLocation: store.Url);

            return url;
        }