show last thread outside of forum root + use ajax

[Ba$im]

hello
i looking for is how use
it withe ajax
u can c in yahoo site he use ajax in menue of home page
like in

* Featured
* Entertainment
* Sports
* Life

i dont have good knowledbagebase in php and ajax but i creat this code


<ul id="your_id_forum" class="shadetabs">
<li><a href="#" rel="1">name1</a></li>
<li><a href="#" rel="2">name2</a></li>
<li><a href="#" rel="3">name3</a></li>
<li><a href="#" rel="4">name4</a></li>
</ul>
<div class="tabcontentstyle">
<div id="1" class="tabcontent">
thread_of__name1
</div>
<div id="2" class="tabcontent">
thread_of__name2
</div>
<div id="3" class="tabcontent">
thread_of__name3

</div>
<div id="4" class="tabcontent">
thread_of__name4
</div>
</div>
<script type="text/javascript">initializetabcontent("your_id_forum
")</script>


i wanna to some one develope this code to show last 5
what i use?

thanks for help

i just nedd someone tell me what i need to show last 5 thread from forum that i want