Menu Vertical Dropdown

Que tal você colocar um menu vertical no seu blog no estilo Dropdown, e muito fácil de se instalar basta seguir as instrunções a seguir:

1° vá em layout, elementos da página, clique para adicionar um gadget e escolha a opção html/javascript e cole o código abaixo lá:

<style type="text/css">
.suckerdiv ul{
margin: 0;
padding: 0;
list-style-type: none;
width: 160px; /* Largura Menu Items */
}
.suckerdiv ul li{
position: relative;
}
/*Sub menu items */
.suckerdiv ul li ul{
position: absolute;
width: 170px; /*largura sub menu*/
top: 0;
visibility: hidden;
}


/* estilos dos links */
.suckerdiv ul li a{
display: block;
overflow: auto;
color: black;
text-decoration: none;
background: #fff; /*edite cor */
padding: 1px 5px;
border-bottom: 1px solid #ccc; /*edite borda */
}
.suckerdiv ul li a:visited{
color: black;
}
.suckerdiv ul li a:hover{
background-color: #ccc; /*edite cor */
}
.suckerdiv .subfolderstyle{
background: url(http://i43.tinypic.com/fv8xz4.gif) no-repeat center right;
}


/* Holly Hack for IE */
* html .suckerdiv ul li { float: left; height: 1%; }
* html .suckerdiv ul li a { height: 1%; }
/* End */
</style>&
<script type="text/javascript">
//SuckerTree Vertical Menu 1.1 (Nov 8th, 06)
//By Dynamic Drive: http://www.dynamicdrive.com/style/


var menuids=["suckertree1"] //Enter id(s) of SuckerTree UL menus, separated by commas


function buildsubmenus(){
for (var i=0; i<menuids.length; i++){
var ultags=document.getElementById(menuids[i]).getElementsByTagName("ul")
for (var t=0; t<ultags.length; t++){
ultags[t].parentNode.getElementsByTagName("a")[0].className="subfolderstyle"
if (ultags[t].parentNode.parentNode.id==menuids[i]) //if this is a first level submenu
ultags[t].style.left=ultags[t].parentNode.offsetWidth+"px" //dynamically position first level submenus to be width of main menu item
else //else if this is a sub level submenu (ul)
ultags[t].style.left=ultags[t-1].getElementsByTagName("a")[0].offsetWidth+"px" //position menu to the right of menu item that activated it
ultags[t].parentNode.onmouseover=function(){
this.getElementsByTagName("ul")[0].style.display="block"
}
ultags[t].parentNode.onmouseout=function(){
this.getElementsByTagName("ul")[0].style.display="none"
}
}
for (var t=ultags.length-1; t>-1; t--){ //loop through all sub menus again, and use "display:none" to hide menus (to prevent possible page scrollbars
ultags[t].style.visibility="visible"
ultags[t].style.display="none"
}
}
}


if (window.addEventListener)
window.addEventListener("load", buildsubmenus, false)
else if (window.attachEvent)
window.attachEvent("onload", buildsubmenus)


</script>
<div class="suckerdiv"><ul id="suckertree1"><li><a href="url-link">Item 1</a></li>
<li><a href="url-link">Item 2</a>
<ul><li><a href="url-link">Sub Item 1.1</a></li>
<li><a href="url-link">Sub Item 1.2</a></li>
</ul></li>
<li><a href="url-link">Item 3</a></li>


<li><a href="url-link">Item 4</a>
<ul><li><a href="url-link">Sub Item 2.1</a></li>
<li><a href="url-link">Sub Item 2.2</a>
<ul><li><a href="url-link">Sub Item 2.1.1</a></li>
<li><a href="url-link">Sub Item 2.1.2</a></li>
<li><a href="url-link">Sub Item 2.1.3</a></li>
<li><a href="url-link">Sub Item 2.1.4</a></li>
</ul></li>
</ul></li>
<li><a href="url-link">Item 5</a></li>
</ul></div>

2° Agora insira os links onde esta destacado url-link
E faça as alterações desejada como alterar a largura cores de background e bordas e tudo mais se preferir


3° e depois de ter feito as alterações e só clicar em salvar

referência: Gothic Darkness