A demot jelenleg látod, alatta pedig a kódot! :)

Kód:

<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.4.2/jquery.min.js"></script><script type="text/javascript" src="ddaccordion.js">

/***********************************************
* Accordion Content script- (c) Dynamic Drive DHTML code library (www.dynamicdrive.com)
* Visit http://www.dynamicDrive.com for hundreds of DHTML scripts
* This notice must stay intact for legal use
***********************************************/

</script><script type="text/javascript">


ddaccordion.init({
    headerclass: "expandable", //Shared CSS class name of headers group that are expandable
    contentclass: "categoryitems", //Shared CSS class name of contents group
    revealtype: "click", //Reveal content when user clicks or onmouseover the header? Valid value: "click", "clickgo", or "mouseover"
    mouseoverdelay: 200, //if revealtype="mouseover", set delay in milliseconds before header expands onMouseover
    collapseprev: true, //Collapse previous content (so only one open at any time)? true/false
    defaultexpanded: [0], //index of content(s) open by default [index1, index2, etc]. [] denotes no content
    onemustopen: false, //Specify whether at least one header should be open always (so never all headers closed)
    animatedefault: false, //Should contents open by default be animated into view?
    persiststate: true, //persist state of opened contents within browser session?
    toggleclass: ["", "openheader"], //Two CSS classes to be applied to the header when it's collapsed and expanded, respectively ["class1", "class2"]
    togglehtml: ["prefix", "", ""], //Additional HTML added to the header when it's collapsed and expanded, respectively  ["position", "html1", "html2"] (see docs)
    animatespeed: "fast", //speed of animation: integer in milliseconds (ie: 200), or keywords "fast", "normal", or "slow"
    oninit:function(headers, expandedindices){ //custom code to run when headers have initalized
        //do nothing
    },
    onopenclose:function(header, index, state, isuseractivated){ //custom code to run whenever a header is opened or closed
        //do nothing
    }
})


</script>
<style type="text/css">
.arrowlistmenu{
width: 180px; /*width of accordion menu*/
}

.arrowlistmenu .menuheader{ /*CSS class for menu headers in general (expanding or not!)*/
font: bold 14px Arial;
color: white;
background: black url(titlebar.png) repeat-x center left;
margin-bottom: 10px; /*bottom spacing between header and rest of content*/
text-transform: uppercase;
padding: 4px 0 4px 10px; /*header text is indented 10px*/
cursor: hand;
cursor: pointer;
}

.arrowlistmenu .openheader{ /*CSS class to apply to expandable header when it's expanded*/
background-image: url(titlebar-active.png);
}

.arrowlistmenu ul{ /*CSS for UL of each sub menu*/
list-style-type: none;
margin: 0;
padding: 0;
margin-bottom: 8px; /*bottom spacing between each UL and rest of content*/
}

.arrowlistmenu ul li{
padding-bottom: 2px; /*bottom spacing between menu items*/
}

.arrowlistmenu ul li a{
color: #A70303;
background: url() no-repeat center left; /*custom bullet list image*/
display: block;
padding: 2px 0;
padding-left: 19px; /*link text is indented 19px*/
text-decoration: none;
font-weight: bold;
border-bottom: 1px solid #dadada;
font-size: 90%;
}

.arrowlistmenu ul li a:visited{
color: #A70303;
}

.arrowlistmenu ul li a:hover{ /*hover state CSS*/
color: #A70303;
background-color: #F3F3F3;
}</style>
<div class="arrowlistmenu">
    <h3 class="menuheader expandable">
        Menü cime! :)</h3>
    <ul class="categoryitems">
        <li>
            <a href="OLDALAD LINKJE!">MENÜD HELYE!</a></li>
        <li>
            <a href="OLDALAD LINKJE!">MENÜD HELYE!</a></li>
        <li>
            <a href="OLDALAD LINKJE!">MENÜD HELYE!</a></li>
        <li>
            <a href="OLDALAD LINKJE!">MENÜD HELYE!</a></li>
        <li>
            <a href="OLDALAD LINKJE!">MENÜD HELYE!</a></li>
        <li>
            <a href="OLDALAD LINKJE!">MENÜD HELYE!</a></li>
        <li>
            <a href="OLDALAD LINKJE!">MENÜD HELYE!</a></li>
        <li>
            <a href="OLDALAD LINKJE!">MENÜD HELYE!</a></li>
    </ul>
</div>
<p>
    &nbsp;</p>