MT only supports IE 7.0+ correctly?

Hi, what I noticed for the X-th time is simple: The page display in Mozilla FireFox is mostly “hooked” !!! In order to be able to use the website properly, you are forced to use the MS-IE7.x This is not only annoying, but DISKRIMINIREND to the MT users who use the “Mozilla FireFox” … Best regards, wbf325i