.top_nav{
  position:relative;
  width:671px;
  height:28px;
  float:right;
  margin-right:10px;
  margin-top:43px;}
* html .top_nav{
  position:relative;
  width:671px;
  height:28px;
  float:right;
  margin-right:5px;
  margin-top:43px;}
.top_nav a:hover{
  background-position:0px -28px;}
a.top_nav_13{
  float:left;
  background:url(../images/menu/top-nav_31.gif) 0px 0px no-repeat;
  height:28px;
  width:81px;
  overflow:hidden;}
a.top_nav_14{
  float:left;
  background:url(../images/menu/top-nav_32.gif) 0px 0px no-repeat;
  height:28px;
  width:143px;
  overflow:hidden;}
a.top_nav_15{
  float:left;
  background:url(../images/menu/top-nav_33.gif) 0px 0px no-repeat;
  height:28px;
  width:147px;
  overflow:hidden;}
a.top_nav_16{
  float:left;
  background:url(../images/menu/top-nav_34.gif) 0px 0px no-repeat;
  height:28px;
  width:134px;
  overflow:hidden;}
a.top_nav_17{
  float:left;
  background:url(../images/menu/top-nav_35.gif) 0px 0px no-repeat;
  height:28px;
  width:92px;
  overflow:hidden;}
a.top_nav_18{
  float:left;
  background:url(../images/menu/top-nav_36.gif) 0px 0px no-repeat;
  height:28px;
  width:74px;
  overflow:hidden;}