Sections shown as DIVs via Web

I have a problem with the sections in web. We have tried to open in web the same section in two servers.

When I try to expanded the section in one of them, the web page is re-open (refresh), but we don’t need this because when the new direction is caltulated. The http server does not translates the section into a DIV. It’s only a link.

On the other hand, the second server translates the code to DIVs so the section is expanded and the web page is not updated.

We have reviewed the different aspects of the Server Document and there is nothing different (initially). In addition he server Versions are the same (7.0.1)

We need to know which is the property of a server that is able to do this.