Dual Standards

Further to my last post about Wikis, seems I had already successfully embeded the Wiki into the school website. The problem I was faced with was that I was using a school laptop to view it on. The school laptops use Internet Explorer, and as a result I couldn't get the Wiki login to work correctly.
Firefox has no such problems, and so using my home machine I am able to log into the Wiki from the embedded page.
When will Microsoft design their products using company wide accepted standards, instead of their own, unworkable standards?