function ringtones_120x600(tracking_link){ 
//altURL = 'http://www.jamster.co.uk/jcw/go/';
document.writeln('<a href=\"'+tracking_link+'\" target=\"_blank\">');
document.writeln('<img src=\"http://ad.jamster.co.uk/creatives/default/ringtones/ringtones_120x600.gif\" width=\"120\" height=\"600\" border=\"0\"></a>');
}