function erotic_300x250(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/erotic/erotic_300x250.gif\" width=\"300\" height=\"250\" border=\"0\"></a>');
}