@namespace url(http://www.w3.org/1999/xhtml);
/* Marcar enlaces visitados */
a:visited{
   /*content: "\00A0\221A" !important; */             
/*text-decoration:line-through !important;*/    /*#CCCCFF  */
/*color:  #c0c     !important;*/
opacity: 0.6 !important;
/*color:  red     !important;*/
font-weight: bold !important;
}

a:visited:hover {
opacity: 1 !important;
text-decoration: underline !important;
font-style: italic !important;
}