VK_API_Attachments

function get_attaches(data) {
        var result = '';
        if (data.attachments) {
            for (var i in data.attachments){
                var attach = data.attachments[i];
                switch(attach.type){
                    case 'photo':
                        var photo = attach.photo;
                        var src = '';
                        if (photo.photo_2560) {
                            src = photo.photo_2560;
                        } else if (photo.photo_1280) {
                            src = photo.photo_1280;
                        } else if (photo.photo_807) {
                            src = photo.photo_807;
                        } else if (photo.photo_604) {
                            src = photo.photo_604;
                        } else if (photo.photo_130) {
                            src = photo.photo_130;
                        } else {
                            src = photo.photo_75;
                        }
                        result += '<div class="attach"><span class="attach_title">Фотография:</span><br><img src="' + src + '"></div>';
                        break;
                    case 'video':
                        var video = attach.video;
                        var src = '';
                        if (video.photo_800) {
                            src = video.photo_800;
                        } else if (video.photo_640) {
                            src = video.photo_640;
                        } else  if (video.photo_320) {
                            src = video.photo_320;
                        } else {
                            src = video.photo_130;
                        }
                        result += '<div class="attach"><span class="attach_title">Видеозапись:</span><br><img src="' + src + '"></div>';
                        break;
                    default:
                        result += '<div class="attach">Вложение</div>';
                        break;
                }
            }
        }
    return result;
    }