ul.menu {
  background:none repeat scroll 0 0 #FFFFFF;
  border-bottom:1px solid #696969;
  display:block;
  height:24px;
  list-style-type:none;
  margin:0;
  padding:4px 20px 0;
}

ul.menu li {
  display:block;
  margin:0;
  padding:0;
}

ul.menu li a {
  background:none no-repeat scroll 16px 3px #FFFFFF;
  border-bottom:1px solid #696969;
  color:#696969;
  display:block;
  font-family:Verdana,sans-serif;
  font-size:16px;
  height:24px;
  padding:0 16px 0 36px;
  text-decoration:none;
  text-transform:uppercase;
}

ul.menu li.left, ul.menu li.left a {
  float:left;
}

ul.menu li.right, ul.menu li.right a {
  float:right;
}

ul.menu li a:hover {
  border-bottom:5px solid #696969;
}

ul.menu img {
  border:0 none;
  height:16px;
  margin:0 4px 4px 0;
  vertical-align:middle;
  width:16px;
}

#menu_home {
  background-image:url("../images/icon_home.png");
}

#menu_publications {
  background-image:url("../images/icon_publications.png");
}

#menu_talks {
  background-image:url("../images/icon_talks.png");
}

#menu_courses {
  background-image:url("../images/icon_courses.png");
}

#menu_thesis {
  background-image:url("../images/icon_thesis.png");
}

#menu_miscellaneous {
  background-image:url("../images/icon_miscellaneous.png");
}
  
#menu_contact {
  background-image:url("../images/icon_contact.png");
}

#menu_document {
  background-image:url("../images/icon_pdf.png");
}

#menu_slides {
  background-image:url("../images/icon_pdf.png");
}

#menu_reference {
  background-image:url("../images/icon_txt.png");
}