function World()   {document.images[8].src='/pictures/mapa_background_red.gif'; return true;}
function am() {document.images[8].src='/pictures/am.gif'; return true;}
function af() {document.images[8].src='/pictures/af.gif'; return true;}
function ev() {document.images[8].src='/pictures/ev.gif'; return true;}
function au() {document.images[8].src='/pictures/au.gif'; return true;}
function as() {document.images[8].src='/pictures/as.gif'; return true;}