Hi,

The issue with IE9 about Javascript is explained in this thread
http://blogs.msdn.com/b/rakkimk/archive/2011/04/12/asp-net-form-tag-doesn-t-have-name-attribute-xhtmlconformance.aspx.

To solve it, I just needed to change my code written in Javascript.

With your help I now solve all issues I had. But there is still one about rendering of the page when a user is logged in, for example the administrator. In fact, the menu is pushed down toward bottom and disappear.

One more thing is that I'm not able to remove modules from a page anymore, because the menu that appear when you mouse over a module to change setting or delete it disappears.

And I didn't find a way to address this.