#janelaAviso { z-index: 13; position:  absolute; left: 50%; margin-left: -104px; top: 260px; height: 242px; width: 402px; background: url(janela.png); }
#janelaFechar { position: relative; left: 300px; top: 243px; font: bold 12pt Tahoma; color: red; text-decoration: none; }