<style type="text/css"> 
.mybb_bs { 
  filter: alpha(opacity=50) !important;
  opacity: 0.5 !important;
  -moz-opacity: 0.5 !important;
  -khtml-opacity: 0.5 !important;
} 
.mybb_bs:hover { 
filter: alpha(opacity=100) !important;
opacity: 1.0 !important;
-moz-opacity: 1.0 !important;
-khtml-opacity: 1.0 !important;
} 
</style>

<script type="text/javascript">
document.getElementById("title-logo-tdr").innerHTML = "<div class='mybb_bs'>" + document.getElementById("title-logo-tdr").innerHTML + "</div>";
document.getElementById("tieser-bottom").innerHTML = "<div class='mybb_bs'>" + document.getElementById("tieser-bottom").innerHTML + "</div>";
</script>