But this assumes the code that actually hides the div will work for ie55, ns6, and ns7 (and all other browsers). On a quick glance, I think it will, but one never really knows without testing. Also, keep in mind that this code is specific to hiding divs in relation to opening menus; it isn't a general-purpose div hider.
See, oddly, Netscape 7 for pc the menus overlap the flash ok...Netscape 7 for mac...the menus appear behind the flash...so I figured why not hide it for all browsers