Content Managment and Frontend ok with Opera not shown with IE & FF

[noidea]

Well, this is really strange problem. I was working with opera and everything is ok when I tried the same stuff inside FF and IE this link are missing. This is what I've made inside my Template:

        {cms_module module=CustomContent}
       
        {edit showbutton=true}
       

In Opera I got this inside HTML page:


and that's what I want, but with IE and FF the only thing that I got inside HTML is this:

So all those links made by tag {edit} are missing how's that?

[noidea]

I've made some more test now and I found that actually neither if I put {edit} tag elswhere with no condition around that link cames out... where strange to me looks like IE and FF do not execute that one when requesting page from the server...