#container {
   position: relative;        /* place it where you want     */
}

#translucentbkg {
   width:191px; height:38px;     /* to match DIVs size          */
   background-color:#414141;       /* the background              */
   filter:alpha(opacity=50);
   -moz-opacity:0.5;
   opacity:0.5;
}

#opaquetext {
   width:191px; height:38px;     /* to match DIVs size          */
   background-color:transparent;   /* transparent background      */
   position:absolute;  
   font-weight:bold;            /* absolute positioning        */
   z-index:2;                      /* place it over the other DIV */
}