function banner() { } ; b = new banner() ; n = 0
b[n++]= "<IMG name=randimg SRC='http://www.tripslog.com/Clients_preview/DUSA/previews/head1.jpg' border='0' ALT=''>"
b[n++]= "<IMG name=randimg SRC='http://www.tripslog.com/Clients_preview/DUSA/previews/head2.jpg' border='0' ALT=''>"
b[n++]= "<IMG name=randimg SRC='http://www.tripslog.com/Clients_preview/DUSA/previews/head3.jpg' border='0' ALT=''>"
b[n++]= "<IMG name=randimg SRC='http://www.tripslog.com/Clients_preview/DUSA/previews/head1.jpg' border='0' ALT=''>"
b[n++]= "<IMG name=randimg SRC='http://www.tripslog.com/Clients_preview/DUSA/previews/head2.jpg' border='0' ALT=''>"
b[n++]= "<IMG name=randimg SRC='http://www.tripslog.com/Clients_preview/DUSA/previews/head3.jpg' border='0' ALT=''>"
i=Math.floor(Math.random() * n) ; 
document.write( b[i] )