/* transparencia */	

background-color: #000;

opacity: 0.60; /* css3 - ff 2.0, opera9 */ /* 0 a 1 */
-moz-opacity: 0.60; /* ff 1.9 p baixo */ /* 0 a 1 */
filter: alpha(opacity=60);  /* ie */ /* 0 a 100 */