Note: I had this problem with I.E. 9 also.
FireFox does not have this problem.
Then the problem is not the website. It is InternetDestroyer.
That might be your personal opinion but it doesn't help the many IE users much.
All browsers are different and it's a web developer's task to make sure that their web sites work in the browsers they intend to support. If it doesn't work they can hardly say it's the browsers fault and that the browser will have to adapt to their web site.
They can say "go crap yourself if you're using IE because I hate IE users" or "Please don't use IE because we can't support it" but I haven't seen the Arduino forum say any of that.
Or is your ignorant comment about "InternetDestroyer" to be taken as an official Arduino statement?