Won't help much if the users aren't :-}

>I'm not sure what your issues with IE9 are, but it does not fully support HTML5 and CSS3. You should be using IE 11.
>http://getbootstrap.com/getting-started/#browsers
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>>It is possible that the problem is not with IE in general but with the IE 9 I have installed on my laptop. So once I have the project in a state where I can use it in testing I will try it on another computer. It is just that I lost so much time (the entire week) troubleshooting all kinds of problems that ONLY manifast themseves on IE and work on Chrome or FireFox. So you are right, that I will make sure that the project works on IE. Just not IE on this laptop. Unless I find which setting in IE is messing things up.