c13.src; return true; } function SwapBack13() { document.mailinglist.src = graphic13on.src; return true; } graphic14= new Image(); graphic14.src = "guestbooko.gif"; graphic14on = new Image(); graphic14on.src = "guestbook.gif"; function SwapOut14() { document.guestbook.src = graphic14.src; return true; } function SwapBack14() { document.guestbook.src = graphic14on.src; return true; } graphic15= new Image(); graphic15.src = "linkso.gif"; graphic15on = new Image(); graphic15on.src = "links.gif"; function SwapOut15() { document.links.src = graphic15.src; return true; } function SwapBack15() { document.links.src = graphic15on.src; return true; } graphic16= new Image(); graphic16.src = "emailo.gif"; graphic16on = new