public function getWidgetContent ($instance)
    {
        $instance = $this->setDefalutValues( $instance );

        $widgetContent = '';
        $queryArgs = array('showposts' => $instance['number'], 'nopaging' => 0, 'post_status' => 'publish', 'caller_get_posts' => 1);
        if ( $instance['category'] != -1 ) {
            $queryArgs['cat'] = $instance['category'];
        }
        $r = new WP_Query($queryArgs);
        if ($r->have_posts()) {
            while ($r->have_posts()) {
                $r->the_post();
                $permalink = get_permalink();
                $postID = get_the_ID();
                $postTitle = esc_attr( get_the_title() ? get_the_title() : $postID );
                $postLink = sprintf('<a href="%s" title="%s" class="post-link">%s</a>', $permalink, $postTitle, $postTitle);
                $thumbnail = '';
                $postDate = '';
                if ( $instance['thumbs'] == 'yes' ) {
                    $postDate = sprintf( '<span class="widget-post-meta">%s &bull; %s</span>', get_the_author_link(), get_the_time(get_option('date_format')) );
                }
                if ( $instance['thumbs'] == 'yes' && has_post_thumbnail() ) {
                    $thumbnail = get_the_post_thumbnail( $postID, 'post-thumbnail-small', array('class'=>'thumbnail') );
                    $thumbnail = sprintf('<a href="%1$s" class="thumb-post-link">%2$s</a>', $permalink, $thumbnail);
                }
                $widgetContent .=  '<li>' . $thumbnail . $postLink . $postDate . '</li>';
            }
            $thumbsClass = ( $instance['thumbs'] == 'yes' ) ? ' with-thumbnails' : ' no-thumb';
            $widgetContent = sprintf('<ul class="mw-widget-recent-posts-list%s">%s</ul>', $thumbsClass, $widgetContent);
            wp_reset_postdata();
        }
        return $widgetContent;
    }