No sooner has the new Microsoft Internet Explorer 9 available, are even new problems. As with IE 6 refuse some things, unlike competitors such as Firefox, Opera, Safari etc.. – look good and / to work or. Annoying, especially against the background, that it was still full of joy, after in IE 7 and 8 almost everything went well and we were glad, that the IE 6 “extinct”.
Now he is so because, der Internet Explorer 9 and with it come new problems. But here is beautiful, that it points to many problems, the solution brings: 
Their own compatibility mode. That is more or less, that the IE 9 for this site to make IE8 problems and wants to go out of the way.
It takes “only” to click on the little torn sheet and then should have done a lot of problems.
Check it out just once. If he works, it can go further.
Since we expect the administrators but above all the customers can not always push this button (if this is at all known), the browser can already be notified when the page opens, that he should switch to compatibility mode.
This is accomplished with the following line, the one in the head.phtml directly under the “<title> Day sets:
<meta http-equiv=”X-UA-Compatible” content=”IE=8″ />
This can be for the front end of the folder head.phtml app / design / frontend /[base or default]/IhrTemplate/template/page/html
and for the back end folders app/design/adminhtml/default/default/template/page be done.
Used in Magento versions 1.4.1.1 and 1.4.1.0
Super, that's what I wanted!
Thank you!