Menu Fade

Menu Fade

Hello all, noob here.

I  have a menu that I need to dropdown and fade in on mouseover. I am lost on getting everything to tie in to the CSS, at least I think that's the problem. The other problem is having a lot of "white" space at the bottom of the page, I assume I'm not using display or visibility correctly.

Here is the code (my apologies for the length), any help would be appreciated! Thanks in advance!

$(document).ready(function() {

            $(".aboutus").mouseover(function(e) {         
                e.preventDefault();
                $("#link").fadeIn(250);
                $(".aboutus").toggleClass("menu-open");
            });
           
            $("#link").mouseup(function() {
                return false
            });
            $(document).mouseup(function(e) {
                if($(e.target).parent("a.aboutus").length==0) {
                    $(".aboutus").removeClass("menu-open");
                    $("#link").hide();
                }
            });   
           
           
        });


CSS
--------------------------------------------------------------------------------------
#link{
position: absolute;
left: 0;
top: 0;
visibility: hidden;
font: normal 11px Verdana;
z-index: 100;
background: #000000;
width: 255px;
border: 5px solid #000000;
}

#links ul{
margin: 0;
padding: 0;
list-style-type: none;
}

#link ul li a{
display: block;
text-indent: 3px;
padding: 4px;
text-decoration: none;
text-indent: 5px;
color: #CCC;

}

#link a:hover{
text-decoration: underline;
}


HTML
-------------------------------------------------------------------------------------------------------------
<a href="#" class="aboutus" onMouseOut="MM_swapImgRestore()" onMouseOver="MM_swapImage('nav1','','images/nav1-aboutus-rollover.jpg',1)" ><img src="images/nav1-aboutus.jpg" name="nav1" width="89" height="26" border="0"></a>
       

 <div id="link" class="aboutus">
    <ul>
    <li style="border-bottom: 1px solid #333;"><a href="#">Company Description</a></li>
    <li style="border-bottom: 1px solid #333;"><a href="#">Vision/Mission</a></li>
    <li style="border-bottom: 1px solid #333;"><a href="#">History</a></li>
    <li style="border-bottom: 1px solid #333;"><a href="#">Locations</a></li>
    <li style="border-bottom: 1px solid #333;"><a href="#">Visitor Info</a></li>
    <li style="border-bottom: 1px solid #333;"><a href="#">Virtual Tours</a></li>
    <li><a href="#">Employee Login</a></li>
    <li style="border-top: 1px solid #333;"><a href="#">Community Involvement </a></li>
    </ul>                                             
</div>