öncelikle aşağıdaki kodları sidebar kısmına ekle

<div class="arrowlistmenu">
 
 <h3 class="menuheader expandable">CSS Library</h3>
 <ul class="categoryitems">
 <li><a href="http://www.dynamicdrive.com/style/csslibrary/category/C1/">Horizontal CSS Menus</a></li>
 <li><a href="http://www.dynamicdrive.com/style/csslibrary/category/C2/">Vertical CSS Menus</a></li>
 <li><a href="http://www.dynamicdrive.com/style/csslibrary/category/C4/">Image CSS</a></li>
 <li><a href="http://www.dynamicdrive.com/style/csslibrary/category/C6/">Form CSS</a></li>
 <li><a href="http://www.dynamicdrive.com/style/csslibrary/category/C5/">DIVs and containers</a></li>
 <li><a href="http://www.dynamicdrive.com/style/csslibrary/category/C7/">Links & Buttons</a></li>
 <li><a href="http://www.dynamicdrive.com/style/csslibrary/category/C8/">Other</a></li>
 <li><a href="http://www.dynamicdrive.com/style/csslibrary/all/">Browse All</a></li>
 </ul>
 
 <h3 class="menuheader expandable">CSS Drive</h3>
 <ul class="categoryitems">
 <li><a href="http://www.cssdrive.com">CSS Gallery</a></li>
 <li><a href="http://www.cssdrive.com/index.php/menudesigns/" class="subexpandable">Menu Gallery</a>
     <ul class="subcategoryitems" style="margin-left: 15px">
     <li><a href="http://www.cssdrive.com/index.php/main/category/C34/">Blue Color</a></li>
     <li><a href="http://www.cssdrive.com/index.php/main/category/C36/">Green Color</a></li>
     <li><a href="http://www.cssdrive.com/index.php/main/category/C37/">Orange Color</a></li>
     <li><a href="http://www.cssdrive.com/index.php/main/category/C33/">Red Color</a></li>
     <li><a href="http://www.cssdrive.com/index.php/main/category/C38/">Brown Color</a></li>
     </ul>
 </li>
 <li><a href="http://www.cssdrive.com/index.php/news/">Web Design News</a></li>
 <li><a href="http://www.cssdrive.com/index.php/examples/">CSS Examples</a></li>
 <li><a href="http://www.cssdrive.com/index.php/main/csscompressor/">CSS Compressor</a></li>
 <li><a href="http://www.dynamicdrive.com/forums/forumdisplay.php?f=6">CSS Forums</a></li>
 </ul>
 
 <h3 class="menuheader expandable">JavaScript Kit</h3>
 <ul class="categoryitems">
 <li><a href="http://www.javascriptkit.com/cutpastejava.shtml" >Free JavaScripts</a></li>
 <li><a href="http://www.javascriptkit.com/javatutors/">JavaScript tutorials</a></li>
 <li><a href="http://www.javascriptkit.com/jsref/">JavaScript Reference</a></li>
 <li><a href="http://www.javascriptkit.com/domref/">DOM Reference</a></li>
 <li><a href="http://www.javascriptkit.com/dhtmltutors/">DHTML & CSS</a></li>
 </ul>
 
 <h3 class="menuheader" style="cursor: default">FeedBack</h3>
 <div>
 Regular contents here. Header does not expand or contact.
 </div>
 
 </div>
Sonra aşağıdaki kodları temanın css dosyasına ekle

.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(images/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(images/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 .opensubheader{ /*Open state CSS for sub menu header*/
 background: lightblue !important;
 }
 
 .arrowlistmenu ul li .closedsubheader{ /*Closed state CSS for sub menu header*/
 background: lightgreen !important;
 }
 
 .arrowlistmenu ul li a{
 color: #A70303;
 background: url(images/arrowbullet.png) 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*/
 background-color: #F3F3F3;
 }
 
 .arrowlistmenu ul li a.subexpandable:hover{ /*hover state CSS for sub menu header*/
 background: lightblue;
 }
Daha sonra js dosyalarını temana eklemen lazım onuda header.php </head> tagından önceye eklemelisin kodlar aşağıda


<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.4.2/jquery.min.js"></script>
 
 <script type="text/javascript" src="http://www.dynamicdrive.com/dynamicindex17/ddaccordion.js"></script>
 
 
 <script type="text/javascript">
 
 
 ddaccordion.init({ //top level headers initialization
     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
     }
 })
 
 ddaccordion.init({ //2nd level headers initialization
     headerclass: "subexpandable", //Shared CSS class name of sub headers group that are expandable
     contentclass: "subcategoryitems", //Shared CSS class name of sub contents group
     revealtype: "click", //Reveal content when user clicks or onmouseover the header? Valid value: "click" 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: [], //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: ["opensubheader", "closedsubheader"], //Two CSS classes  to be applied to the header when it's collapsed and expanded,  respectively ["class1", "class2"]
     togglehtml: ["none", "", ""], //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>
son olarak alttaki resimleri images klasörünün içine at menu tamamdır.

sidebar kısmına eklemen gereken kodları kendi menü kodlarınla değişirsin.