How can I change my navigation from horizontal to vertical?
<ul id="menu">
<!-- Start of Home-->
<li><a href="#">Home</a></li>
<!-- End of Home-->
<!-- Start of North America-->
<li><a href="#">North America</a>
<div class="menu-container-4">
<div class="column-1">
<ul>
<li><a href="#">Canada</a></li>
<li><a href="#">United States</a></li>
</ul>
</div>
<div class="column-1">
<ul>
<li><a href="#">Cuba</a></li>
</ul>
</div>
<div class="column-1">
<ul>
<li><a href="#">Mexico</a></li>
</ul>
</div>
<div class="column-1">
<ul>
<li><a href="#">Suriname</a></li>
</ul>
</div>
</div>
</li>
<!-- End of North America-->
<!--Start of Central America-->
<li><a href="#">Central America</a>
<div class="menu-container-4">
<div class="column-1">
<ul>
<li><a href="#">Canada</a></li>
<li><a href="#">United States</a></li>
</ul>
</div>
<div class="column-1">
<ul>
<li><a href="#">Cuba</a></li>
</ul>
</div>
<div class="column-1">
<ul>
<li><a href="#">Mexico</a></li>
</ul>
</div>
<div class="column-1">
<ul>
<li><a href="#">Suriname</a></li>
</ul>
</div>
</div>
</li>
<!--End of Central America-->
body {
font-family:Helvetica, verdana, arial, sans-serif;
}
#menu ul, #menu li {
line-height:22px;
text-align:left;
font-size:14px;
}
/* menu starts here */
#menu {
list-style:none;
width:940px;
margin:0 auto;
height:45px;
padding:5px 30px;
/* rounded corners for different browser support */
border-radius:5px 5px 0 0;
-moz-border-radius:5px 5px 0 0;
-webkit-border-radius:5px 5px 0 0;
/* css3 gradient */
background:#333333;
background: -moz-linear-gradient(#444444, #111111) repeat scroll 0 0 transparent;
background:-webkit-gradient(linear, left top, left bottom, from(#444444), to(#111111));
/* css3 borders */
border: 1px solid #9C9C9C;
box-shadow:inset 0px 0px 1px #e8edf0;
-moz-box-shadow:inset 0px 0px 1px #e8edf0;
-webkit-box-shadow:inset 0px 0px 1px #e8edf0;
}
/* tab starts here */
#menu li {
float:left;
display:block;
position:relative;
text-align:center;
padding:4px 10px;
margin:7px 30px 0 0;
border:none;
}
#menu li:hover {
border:1px solid #b7b7b7;
padding:4px 9px;
/*rounded corners */
border-radius:5px 5px 0 0;
-moz-border-radius:5px 5px 0 0;
-webkit-border-radius:5px 5px 0 0;
/* css 3 gradient */
background:#fff;
background: -moz-linear-gradient(center top, #FFFFFF, #EDEDED) repeat scroll 0 0 transparent;
background:-webkit-gradient(linear, left top, left bottom, from(#FFFFFF), to(#EDEDED));
}
#menu li a {
font-size:14px;
color: #999999;
display:block;
outline:0;
text-decoration:none;
}
#menu li:hover a {
color:#161616;
}
/* menu containers here */
#menu .menu-container-1,#menu .menu-container-2,#menu .menu-container-3,#menu .menu-container-4 {
margin:4px auto;
float:left;
position:absolute;
left:-999em;
text-align:left;
padding:10px 5px;
border:1px solid #b7b7b7;
border-top:none;
/* rounded corners */
border-radius:0 5px 5px 5px;
-moz-border-radius:0 5px 5px 5px;
-webkit-border-radius:0 5px 5px 5px;
/* gradient */
background:#444444;
background: -moz-linear-gradient(center top, #444444, #111111) repeat scroll 0 0 transparent;
background:-webkit-gradient(linear, left top, left bottom, from(#444444), to(#111111));
}
#menu .menu-container-1 {
width:140px;
}
#menu .menu-container-2 {
width:280px;
}
#menu .menu-container-3 {
width:420px;
}
#menu .menu-container-4 {
width:560px;
}
#menu li:hover .menu-container-1, #menu li:hover .menu-container-2, #menu li:hover .menu-container-3, #menu li:hover .menu-container-4 {
top:auto;
left:-1px;
}
/* columns ici */
#menu .column-1, #menu .column-2 {
display:inline;
float:left;
position:relative;
margin:0 5px;
}
#menu .column-1 {
width:130px;
}
#menu .column-2 {
width:260px;
}
#menu .column-3 {
width:390px;
}
#menu .column-4 {
width:520px;
}
/* right menu */
#menu .menu-right {
float:right;
margin-right:0px;
}
#menu li .align-right {
/*rounded corners */
border-radius:5px 0 5px 5px;
-moz-border-radius:5px 0 5px 5px;
-webkit-border-radius:5px 0 5px 5px;
}
#menu li:hover .align-right {
left:auto;
right:-1px;
top:auto;
}
/* menu h2, h3, p, etc.... */
#menu p, #menu h2, #menu h3, #menu ul li {
line-height:21px;
font-size:12px;
text-align:left;
}
#menu p {
line-height:18px;
margin-bottom:10px;
color:#F2E8E8;
}
#menu h3, #menu h2 {
font-size:11px;
margin:7px 0 14px 0;
padding-bottom:5px;
text-transform:uppercase;
color: #999999;
}
#menu li:hover div a {
box-shadow: 0 1px 0 #111111, 0 2px 0 #777777;
color: #666666;
font-size: 11px;
padding-left: 6px;
}
#menu li:hover div a:hover {
background: -moz-linear-gradient(#04ACEC, #0186BA) repeat scroll 0 0 transparent;
background:-webkit-gradient(linear, left top, left bottom, from(#04ACEC), to(#0186BA));
color: #FAFAFA;
background:#04ACEC;
}
#menu li ul {
box-shadow: 0 1px 0 #111111, 0 2px 0 #777777;
list-style:none;
padding:0;
margin-bottom:12px;
}
#menu li ul li {
float: none;
font-size: 12px;
line-height: 24px;
margin: 0;
padding: 0;
position: relative;
text-align: left;
width: 130px;
}
#menu li ul li:hover {
background: none;
border: medium none;
margin: 0;
padding: 0;
}
/* login here */
#menu .form {
margin:10px 0 0 45px;
}
#menu input {
color:#e9e9e9;
font-size:12px;
outline:0 none;
padding:9px;
/* gradient */
background:#6e6e6e;
background:-moz-linear-gradient(top, #888, #575757);
background:-webkit-gradient(linear, left top, left bottom, from(#888), to(#575757));
/* css3 borders */
border:1px solid #555;
-moz-border-radius:10px;
-webkit-border-radius:10px;
/* css3 shadow effect */
-moz-box-shadow:0 0 8px rgba(0, 0, 0, 0.1);
-webkit-box-shadow:rgba(0, 0, 0, 0.1) 0px 0px 8px;
box-shadow:rgba(0, 0, 0, 0.1) 0px 0px 8px;
}
#menu input:focus {
background: none repeat scroll 0 0 #313131;
}
#menu input:hover {
border-color: #000000;
}
#menu .submit input {
background: -moz-linear-gradient(center top, #444444, #111111) repeat scroll 0 0 transparent;
background:-webkit-gradient(linear, left top, left bottom, from(#444444), to(#111111));
border-radius: 10px 10px 10px 10px;
box-shadow: 0 0 1px #EDF9FF inset;
color: #FADDDE;
padding: 9px;
width: 90px;
}
#menu .submit input:hover {
background: -moz-linear-gradient(center top, #444444, #3D3A3A) repeat scroll 0 0 transparent;
background:-webkit-gradient(linear, left top, left bottom, from(#444444), to(#3D3A3A));
cursor: pointer;
}
#menu .submit input:active {
background: -moz-linear-gradient(center top, #444444, #111111) repeat scroll 0 0 transparent;
background:-webkit-gradient(linear, left top, left bottom, from(#444444), to(#111111));
border: 1px solid #9C9C9C;
color: #9C9C9C;
}
footer {
background: none repeat scroll 0 0 rgba(0, 0, 0, 0.04);
border: 1px solid rgba(0, 0, 0, 0.08);
border-radius: 5px 5px 5px 5px;
box-shadow: 0 3px 1px rgba(0, 0, 0, 0.02) inset, 0 1px 0 white;
padding: 1.5em;
bottom: 0;
display: block;
height: 40px;
left: 0;
position: fixed;
width: 100%;
z-index: 100000;
}
footer h2 {
color: rgba(0, 0, 0, 0.8);
text-shadow: 0 1px 0 white;
font-size: 20px;
font-weight: normal;
left: 50%;
margin-left: -400px;
position: absolute;
width: 500px;
text-shadow: 1px #000000;
font-family: 'PT Sans Narrow', Arial, sans-serif;
}
footer a.youhacked, a.youhacked:visited {
background: url("http://youhack.me/demo/Apple%20itunes%20banner%20rotator/youhack.png") no-repeat scroll right top transparent;
border: medium none;
font-size: 12px;
height: 70px;
left: 50%;
line-height: 31px;
margin: 25px 0 0 110px;
position: absolute;
text-decoration: none;
top: 0;
width: 310px;
color: #000000;
letter-spacing: 1px;
text-shadow: 1px #000000;
}
