[jQuery] bgiframe & superfish

[rolfsf]

I've been implementing a menu with the superfish menu, and have been
troubleshooting IE (as usual). I'm using the bgiframe plugin as
prescribed in the superfish documentation.

$(document).ready(function(){
        $("ul.nav")
        .superfish({
                animation : { opacity:"show", height:"show" }
        })
        .find(">li:has(ul)")
                .mouseover(function(){
                        $("ul", this).bgIframe({opacity:false});
                })
                .find("a")
                        .focus(function(){
                                $("ul", 
$(".nav>li:has(ul)")).bgIframe({opacity:false});
                        });
});

When I use IE's DOM Explorer to look at the menu, I notice that
bgiframe is placing the iframe inside the UL, like this

<ul class="sfHover">
    <iframe class="bgiframe"></iframe>
    <li></li>
    <li></li>
</ul>

Isn't that invalid? Shouldn't the iframe be wrapping the UL?

it just doesn't look right - am I crazy?

rolfsf