/***********************/
/***** rollovers *******/
/***********************/
.rollover {
  display:block;
}
.rollover img {
  width:100%;
  height:100%;
  border:0;
}
.rollover:hover {
  visibility:visible;
}
.rollover:hover img {
  visibility:hidden;
}
a#nav1  { width:129px; height:25px; background-image:url(../images/nav_abouttsa_b.gif); }
a#nav2  { width:129px; height:25px; background-image:url(../images/nav_publicresrouces_b.gif); }
a#nav3  { width:129px; height:25px; background-image:url(../images/nav_memberbenefits_b.gif); }
a#nav4  { width:129px; height:25px; background-image:url(../images/nav_sponsor_b.gif); }
a#nav5  { width:102px; height:33px; background-image:url(../images/nav_news_b.gif); }
a#nav6  { width:86px;  height:33px; background-image:url(../images/nav_advocacy_b.gif); }
a#nav7  { width:106px; height:33px; background-image:url(../images/nav_publications_b.gif); }
a#nav8  { width:100px; height:33px; background-image:url(../images/nav_committees_b.gif); }
a#nav9  { width:77px;  height:33px; background-image:url(../images/nav_careers_b.gif); }
a#nav10 { width:60px;  height:33px; background-image:url(../images/nav_links_b.gif); }
a#nav11 { width:80px;  height:33px; background-image:url(../images/nav_contact_b.gif); }