.menu_block {
  display: block;
  visibility: visible;
  width: 210px;
  height: 64px;
  margin: 0px;
  padding: 0px;
  padding-top: 1px;
  overflow: hidden;
}

.menu_block a, .menu_block a:link, .menu_block a:active, .menu_block a:visited {
  font-size: 12px;
  font-weight: normal;
  text-decoration: none;
  color: #000000;
}

.menu_text, .menu_text_selected {
  display: block;
  padding-left: 4px;
  padding-right: 66px;
  padding-top: 12px;
  text-align: right;
  visibility: visible;
}

.menu_text_selected {
  color: #ED6F00;
}

.sys_menu a:hover {
  color: #ED6F00;
}

.sys_menu a {
  background-repeat: no-repeat;
  display: block;
  width: 210px;
  height: 60px;
}

a.menu_home_selected, a.menu_home {
  background-image: url(../images/nav/home_over.c.gif);
}

a.menu_contact_selected, a.menu_contact {
  background-image: url(../images/nav/home_contact.c.gif);
}

a.menu_general_selected, a.menu_general {
  background-image: url(../images/nav/gen_over.c.gif);
}

a.menu_academic_selected, a.menu_academic {
  background-image: url(../images/nav/acad_over.c.gif);
}

a.menu_environmental_selected, a.menu_environmental {
  background-image: url(../images/nav/envi_over.c.gif);
}

a.menu_biomedical_selected, a.menu_biomedical {
  background-image: url(../images/nav/bio_over.c.gif);
}

a.menu_academic_case1_selected, a.menu_academic_case1 {
  background-image: url(../images/nav/acad_case1.c.gif);
}

a.menu_environmental_case1_selected, a.menu_environmental_case1 {
  background-image: url(../images/nav/envi_case1.c.gif);
}

a.menu_environmental_case2_selected, a.menu_environmental_case2 {
  background-image: url(../images/nav/envi_case2.c.gif);
}

a.menu_environmental_case3_selected, a.menu_environmental_case3 {
  background-image: url(../images/nav/envi_case3.c.gif);
}

a.menu_para_selected, a.menu_para {
  background-image: url(../images/nav/bio_para.c.gif);
}

a.menu_epi_selected, a.menu_epi {
  background-image: url(../images/nav/bio_epi.c.gif);
}

a.menu_reaction_selected, a.menu_reaction {
  background-image: url(../images/nav/bio_reaction.c.gif);
}

a.menu_nhpar_selected, a.menu_nhpar {
  background-image: url(../images/nav/bio_nhpar.c.gif);
}

a.menu_imim_selected, a.menu_imim {
  background-image: url(../images/nav/bio_imim.c.gif);
}

a.menu_news_selected, a.menu_news {
  background-image: url(../images/nav/news.c.gif);
}

a.menu_private_selected, a.menu_private {
  background-image: url(../images/nav/private.c.gif);
}