var mess = new Array(
'<a href=\"http://www.7daynet.info/adultes\" target=\"_blank\"><img src=\"http://www.7daynet.biz/pub/15.jpg\" width=\"550\" height=\"60\" border=\"0\"></a>',
'<a href=\"http://www.7daynet.info/adultes\" target=\"_blank\"><img src=\"http://www.7daynet.biz/pub/17.jpg\" width=\"550\" height=\"60\" border=\"0\"></a>',
'<a href=\"http://www.7daynet.info/adultes\" target=\"_blank\"><img src=\"http://www.7daynet.biz/pub/16.jpg\" width=\"550\" height=\"60\" border=\"0\"></a>',
'<a href=\"http://www.7daynet.info/adultes\" target=\"_blank\"><img src=\"http://www.7daynet.biz/pub/15.jpg\" width=\"550\" height=\"60\" border=\"0\"></a>');
var max = mess.length;
var num = Math.floor((Math.random() * max));
document.writeln(mess[num]);