Short Answer: Do yourself a favour and
GET FIREFOX for many reasons including protecting yourself against serious internet security risks and ensuring that most sites will display as their authors intended.
Long Answer: The problem of display is not due to badly written pages, it is due to badly written browsers - most particularly all the versions of the pernicious Microsoft Internet Explorer - which often do not conform to WWW standards, are always horrendously buggy and full of security vulnerabilities. Kondo Syokai pages are in fact well written valid HTML. This can be verified by clicking the W3C validator at the bottom of the pages - including this one (note this is not present on SSL secure pages due to limitation of the validator.)
The upshot of all of this is that well written pages have to be altered to trick these hopeless browsers into displaying content correctly which in turn means that you have to have a working copy of each browser available to do the testing - not a simple matter in practice. So the end result is that on some versions of Microsoft Windows with some versions of Microsoft Internet Explorer in some circumstances the pages may not display as intended - this is in spite of a great deal of effort to try to make sure they do!
As an aside, Kondo Syokai do not use Microsoft products - company IT infrastructure is based entirely on secure GNU/BSD and GNU/Linux systems and current desktops are Mandriva Linux.