I know that there already is a question like this: Force IE9 into browser compatibility view
But since adding:
<meta http-equiv="X-UA-Compatible" content="IE=9">
to the the head section and reloading the page with ctrl+F5 didn't help there must be another way.
On my website is also a bxslider and according to this: bxslider not working in IE9 I replaced the elements (which had empty href attribute) with tags - still not effect. The images of the slider are displayed in full size one below the other. After activating compatibility mode the site works perfect.
I don't wanna rebuild my application from the scratch so what could I do to force the compatibility-view? Or is there at least a good free debugging tool for that? I downloaded the firefox addon IE Tab which has a debugbar but to use it you have to buy a premium version. I just don't know what is causing the error...