Bilder in Sidebar anzeigen / Darstellung anpassen

/*-------------------------------------------------------------
 Name:      randimage_sidebar


 Purpose:   Fetch and show random images from the WP media lib
 Receive:   -none-
 Return:    -none-
-------------------------------------------------------------*/
function randimage_sidebar() {
    global $wpdb, $randimage_config;
        
    $SQL = "SELECT ID, post_parent FROM ".$wpdb->prefix."posts 
        WHERE post_type = 'attachment' 
        AND (post_mime_type = 'image/jpeg' OR post_mime_type = 'image/gif' OR 
        post_mime_type = 'image/png' OR post_mime_type = 'image/bmp' OR 
        post_mime_type = 'image/tiff' OR post_mime_type = 'image/x-icon')
        ORDER BY rand() LIMIT ".$randimage_config['amount'];


    $thumbs = $wpdb->get_results($SQL);


    $output = '';
    $output .= $randimage_config['before'];
    foreach($thumbs as $thumb) {
        if($randimage_config['linkto'] == "image") {
            $linkto = get_permalink($thumb->ID);
        } else {
            $SQL2 = "SELECT ID from ".$wpdb->prefix."posts
                WHERE ID = ".$thumb->post_parent." LIMIT 1";
            $temp_id = $wpdb->get_row($SQL2);
            $linkto = get_permalink($temp_id->ID);
        }
        
        $image = wp_get_attachment_image_src($thumb->ID, 'thumbnail', false);
        if($image) {
            list($src, $width, $height) = $image;
            $hwstring = image_hwstring($width, $height);
            if(is_array($size))
                $size = join('x', $size);
            $output .= '<a href="'.$linkto.'" alt=""><img src="'.attribute_escape($src).'" '.$hwstring.'class="attachment-'.attribute_escape($size).'" alt="" /></a>';
            $output .= $randimage_config['spacer'];
        }
    }
    $output .= $randimage_config['behind'];
    
    echo stripslashes(html_entity_decode($output));
}