function music_300x250(tracking_link){ 
//altURL = 'http://www.jamba.de/jcw/go/music/';
document.writeln('<a href=\"'+tracking_link+'\" target=\"_blank\">');
document.writeln('<img src=\"http://ad.jamba.de/creatives/default/music/music_300x250_alt.gif\" width=\"300\" height=\"250\" border=\"0\"></a>');
}