Why does OWA look different on different browsers?
Because Exchange and OWA are Microsoft products, they integrate better with Internet Explorer version 6.0 and higher. More functionality is available to make Outlook Web Access look and act like the traditional Outlook client software. Other browsers, such as Netscape Navigator and Mozilla Firefox, do not support these features, so the screen will appear somewhat different in those browsers. The basic functionality is all still there (Create, Read, Reply, Forward, Calendars, etc) it just looks different on-screen. Also, because this product is web-based, it’s appearance can be affected by custom choices you have made in your browser (font size, color, etc).