#nav, #nav ul {
font-size:1em;
font-family:Arial, Verdana, Helvetica, sans-serif;
font-weight:bold;
margin:0;
padding:0;
list-style-type:none;
list-style-position:outside;
position:relative;
line-height:1.8em;
}

#nav a {
text-align:center;
width: 151px;
display:block;
padding:0px 5px;
border-style: solid;
border-width: 0px 1px 1px 0px;
border-color: #FFF;
color:#fff;
text-decoration:none;
background-color:#1F5AA8;
text-transform:uppercase;
}

#nav a:hover {
background-color:#9B0103;
color:#FFF;
}

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

#nav ul {
font-weight:normal;
position:absolute;
display:none;
top:1.9em;
}

#nav li ul a {
text-align:left;
width:180px;
height:auto;
float:left;
text-transform:none;
}

/* This applies to the About Menu */
#nav2 li ul a {
width:230px;
height:auto;
float:left;
text-transform:none;
}

/* This applies to the Meetings and Activities Menu */
#nav105 li ul a {
width:110px;
height:auto;
float:left;
}

/* This applies to the Knowledge Centre Menu */
#nav121 li ul a {
width:110px;
height:auto;
float:left;
}

#nav ul ul {
top:auto;
}	

#nav li ul ul {
left:180px;
margin:0px 0px 0px 10px;
}

/* This positions the 4th level items such as the Geological Society sub-menu */
#nav li ul ul ul {
left:230px;
margin:0px 0px 0px 10px;
}

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