#nav_menu, #nav_menu ul{
font-family:"Tw Cen MT";
font-size:14px;
text-align:center;
margin:0;
padding:0;
list-style-type:none;
list-style-position:outside;
position:relative;
line-height:1.5em; 
}

#nav_menu a{
display:block;
height:23px;
width:152px;
padding-right:5px;
padding-left:5px;
margin-top:3px;
color:#fff;
text-decoration:none;
background:url(../img/red_bottom_menu.png);
background-repeat:repeat-y;
}

#nav_menu a:hover{
background-position:0 23;
}

#nav_menu li{
float:left;
position:relative;
}

#nav_menu ul {
position:absolute;
display:none;
width:12em;
top:0px;
left:152px; 
}
#nav_menu li ul a{
width:12em;
height:auto;
float:left;
margin-top:1px;
height:23px;
width:152px;
color:#000;
background:url(../img/yellow_bottom_menu.png);
background-repeat:repeat-y;
}

#nav_menu ul ul{
top:auto;
}	

#nav_menu li ul ul {
left:12em;
margin:0px 0 0 10px;
}

#nav_menu li:hover ul ul, #nav_menu li:hover ul ul ul, #nav_menu li:hover ul ul ul ul{
display:none;
}
#nav_menu li:hover ul, #nav_menu li li:hover ul, #nav_menu li li li:hover ul, #nav_menu li li li li:hover ul{
display:block;
}