Navigation bar, drop downs help

[stalkingdatoast]

I need help creating a drop down in my forums, my main page is a wordpress site, and i run forums with vbulletin, i want to duplicate my navigation bar in my forums, but i am not able to add a drop down , i always get a error. this is how the navigation code looks like, can someone tell me what code i need to add to create the drop down menu? thanks in advance.

										<ul id="main_menu" class="menu"><li id="menu-item-27" class="menu-item menu-item-type-custom menu-item-object-custom menu-item-home menu-item-27"><a href="http://strictlybusinessgaming.com/">HOME</a></li>
<li id="menu-item-379" class="menu-item menu-item-type-taxonomy menu-item-object-category menu-item-379"><a href="http://strictlybusinessgaming.com/category/videos/">Videos</a></li>
<li id="menu-item-215" class="menu-item menu-item-type-custom current-menu-item current_page_item menu-item-object-custom menu-item-215"><a href="http://strictlybusinessgaming.com/forum/forum.php">FORUM</a></li>
<li id="menu-item-380" class="menu-item menu-item-type-taxonomy menu-item-object-category menu-item-380"><a href="http://strictlybusinessgaming.com/category/reviews/">Reviews</a></li>
<li id="menu-item-248" class="menu-item menu-item-type-post_type menu-item-object-page menu-item-248"><a href="http://strictlybusinessgaming.com/pro-team/">PRO TEAM</a></li>
<li id="menu-item-247" class="menu-item menu-item-type-post_type menu-item-object-page menu-item-has-children menu-item-247"><a href="http://strictlybusinessgaming.com/staff/">STAFF</a></li>
<li id="menu-item-254" class="menu-item menu-item-type-post_type menu-item-object-page menu-item-has-children menu-item-254"><a href="http://strictlybusinessgaming.com/2014-event-calendar/">EVENTS</a></li>
<li id="menu-item-386" class="menu-item menu-item-type-post_type menu-item-object-page menu-item-386"><a href="http://strictlybusinessgaming.com/sponsors/">Sponsors</a></li>
<li id="menu-item-392" class="menu-item menu-item-type-custom menu-item-object-custom menu-item-392"><a href="http://www.strictlybusinessgaming.com/forum/competitions.php">Competitions</a></li>
</ul>

this is how the navigation bar looks like.