office / menu

#nav {
border:none;
border-radius:3px;
-moz-border-radius:3px;
-webkit-border-radius:3px;
height:485px;
}

#nav, #nav ul {
list-style:none;
padding:0;
width:250px;
}

#nav ul {
position:relative;
z-index:-1;
}

#nav li {
position:relative;
z-index:100;
}

#nav ul li {
margin-top:-23px;
-moz-transition: 0.4s linear 0.4s;
-ms-transition: 0.4s linear 0.4s;
-o-transition: 0.4s linear 0.4s;
-webkit-transition: 0.4s linear 0.4s;
transition: 0.4s linear 0.4s;
}

#nav li a {
color:#000;
display:block;
font-size:12px;
font-weight:bold;
line-height:28px;
outline:0;
padding-left:15px;
text-decoration:none;
}

#nav li a.sub {
background:#d4d5d8 url("../images/down.gif") no-repeat;
}

#nav li a + img {
cursor:pointer;
display:none;
height:28px;
left:0;
position:absolute;
top:0;
width:200px;
}

#nav li a img {
border-width:0px;
height:24px;
line-height:28px;
margin-right:8px;
vertical-align:middle;
width:24px;
}

#nav li a:hover {
background-color:#bcbdc1;
}

#nav ul li a {
background-color:#eee;
border-bottom:1px solid #ccc;
color:#000;
font-size:11px;
line-height:22px;
}

#nav ul li a:hover {
background-color:#ddd;
color:#444;
}

#nav ul li a img {
background: url("../images/bulb.png") no-repeat;
border-width:0px;
height:16px;
line-height:22px;
margin-right:5px;
vertical-align:middle;
width:16px;
}

#nav ul li:nth-child(odd) a img {
background:url("../images/bulb2.png") no-repeat;
}

#nav a.sub:focus {
background:#bcbdc1;
outline:0;
}

#nav a:focus ~ ul li {
margin-top:0;
-moz-transition: 0.4s linear;
-ms-transition: 0.4s linear;
-o-transition: 0.4s linears;
-webkit-transition: 0.4s linears;
transition: 0.4s linear;
}

#nav a:focus + img, #nav a:active + img {
display:block;
}

#nav a.sub:active {
background:#bcbdc1;
outline:0;
}

#nav a:active ~ ul li {
margin-top:0;
}

#nav ul:hover {
display:block;
}