[jQuery] Superfish

[jQuery] Superfish


Hi,
I have a problem to get superfish working in IE.
The problem is i have fixed div's and the menu doesn't extend over the
borders.
Here's my code:
CSS:
#top_menu {
    position:relative;
    left:0px;
    width:920px;
    height:30px;
    padding-top:20px;
    padding-left:35px;
    padding-right:45px;
    background: url(../img/design-design_02.gif);
    background-repeat: no-repeat;
    font-size: 11px;
    text-align:center;
HTML:
    <div id="top_menu">
        <ul class="sf-menu">
            <li class="current">
                <a href="#a">Auftragsverwaltung &#8595;</a>
                <ul>
                    <li>
                        <a href="#aa">Angebote</a>
                    </li>
                    <li class="current">
                        <a href="#ab">Aufträge &#8594;</a>
                        <ul>
                            <li class="current"><a href="#">offen</a></li>
                            <li><a href="#aba">abgeschlossen</a></li>
                            <li><a href="#abb">storniert</a></li>
                        </ul>
                    </li>
                    <li>
                        <a href="#">menu item &#8594;</a>
                        <ul>
                            <li><a href="#">menu item</a></li>
                            <li><a href="#">menu item</a></li>
                            <li><a href="#">menu item</a></li>
                            <li><a href="#">menu item</a></li>
                            <li><a href="#">menu item</a></li>
                        </ul>
                    </li>
                    <li>
                        <a href="#">menu item &#8594;</a>
                        <ul>
                            <li><a href="#">menu item</a></li>
                            <li><a href="#">menu item</a></li>
                            <li><a href="#">menu item</a></li>
                            <li><a href="#">menu item</a></li>
                            <li><a href="#">menu item</a></li>
                        </ul>
                    </li>
                </ul>
            </li>
    </div>
I can't get it working to show the menu outside the div.
Could someone give me a idea?
It works in FF and Safari... But IE (6.0 & 7.0) don't work...
Thanks in advance...
Felix (Germany)