.jqueryslidemenu{
font: bold 12px Verdana;
background: #414141;
width: 100%;
}

.jqueryslidemenu ul{
margin: 0;
padding: 0;
list-style-type: none;
}

/*Top level list items*/
.jqueryslidemenu ul li{
position: relative;
display: inline;
float: left;
}

/*Top level menu link items style*/
.jqueryslidemenu ul li a{
display: block;
background: #414141; /*background of tabs (default state)*/
color: white;
padding: 8px 10px;
border-right: 1px solid #778;
color: #2d2b2b;
text-decoration: none;
}

* html .jqueryslidemenu ul li a{ /*IE6 hack to get sub menu links to behave correctly*/
display: inline-block;
}

.jqueryslidemenu ul li a:link, .jqueryslidemenu ul li a:visited{
color: white;
}

.jqueryslidemenu ul li a:hover{
background: black; /*tab link background during hover state*/
color: white;
}

/*1st sub level menu*/
.jqueryslidemenu ul li ul{
position: absolute;
left: 0;
display: block;
visibility: hidden;
}

/*Sub level menu list items (undo style from Top level List Items)*/
.jqueryslidemenu ul li ul li{
display: list-item;
float: none;
}

/*All subsequent sub menu levels vertical offset after 1st level sub menu */
.jqueryslidemenu ul li ul li ul{
top: 0;
}

/* Sub level menu links style */
.jqueryslidemenu ul li ul li a{
font: normal 13px Verdana;
width: 160px; /*width of sub menus*/
padding: 5px;
margin: 0;
border-top-width: 0;
border-bottom: 1px solid gray;
}

.jqueryslidemenuz ul li ul li a:hover{ /*sub menus hover style*/
background: #eff9ff;
color: black;
}

/* ######### CSS classes applied to down and right arrow images ######### */

.downarrowclass{
position: absolute;
top: 12px;
right: 7px;
}

.rightarrowclass{
position: absolute;
top: 6px;
right: 5px;
}

<!--[if lte IE 7]>
<style type="text/css">
html .jqueryslidemenu{height: 1%;} /*Holly Hack for IE7 and below*/
</style>
<![endif]-->

<script src='http://ajax.googleapis.com/ajax/libs/jquery/1.2.6/jquery.min.js' type='text/javascript'/>
<script src='http://sites.google.com/site/amatullah83/js-indahnyaberbagi/Dropdownmenuwithjquery.js' type='text/javascript'/>

<div id='header-wrapper'>
<b:section class='header' id='header' maxwidgets='1' showaddelement='no'>
<b:widget id='Header1' locked='true' title='Testing templates (Header)' type='Header'/>
</b:section>
</div>

<div class='jqueryslidemenu' id='myslidemenu'>
<ul>
<li><a href='http://joxerz.blogspot.com/'>Home</a></li>
<li><a href='#'>Daftar Isi</a></li>
<li><a href='#'>Tutorial</a>
<ul>
<li><a href='#'>Sub Item 1.1</a></li>
<li><a href='#'>Sub Item 1.2</a></li>
<li><a href='#'>Sub Item 1.3</a></li>
<li><a href='#'>Sub Item 1.4</a></li>
</ul>
</li>
<li><a href='#'>Download</a></li>
<li><a href='#'>Folder 2</a>
<ul>
<li><a href='#'>Sub Item 2.1</a></li>
<li><a href='#'>Folder 2.1</a>
<ul>
<li><a href='#'>Sub Item 2.1.1</a></li>
<li><a href='#'>Sub Item 2.1.2</a></li>
<li><a href='#'>Folder 3.1.1</a>
<ul>
<li><a href='#'>Sub Item 3.1.1.1</a></li>
<li><a href='#'>Sub Item 3.1.1.2</a></li>
<li><a href='#'>Sub Item 3.1.1.3</a></li>
<li><a href='#'>Sub Item 3.1.1.4</a></li>
<li><a href='#'>Sub Item 3.1.1.5</a></li>
</ul>
</li>
<li><a href='#'>Sub Item 2.1.4</a></li>
</ul>
</li>
</ul>
</li>
<li><a href='http://joxerz.blogspot.com/'>About</a></li>
</ul>
<br style='clear: left'/>
</div>