function carta(){
window.open('http://www.keik-bcn.com/carta.html','carta','resizable=0,status=1,toolbar=0,menubar=0,scrollbars=1,width=485,height='+(screen.height-90)+',screenX='+(screen.width-495)+',screenY=0,left='+(screen.width-495)+',top=0');
}

function arriba(){
 self.focus();
 setTimeout('arriba()',5000);
}