function capa(){
  new Ajax.PeriodicalUpdater('condominio', 'capaCondominio.php', {asynchronous:true, frequency:5});
  new Ajax.PeriodicalUpdater('superOferta', 'capaSuperOferta.php', {asynchronous:true, frequency:10});
  new Ajax.PeriodicalUpdater('altoPadrao', 'capaAltoPadrao.php', {asynchronous:true, frequency:10});
}