DEMO version limitations
The only limitation in the DEMO version of DHTML Menu Builder 3.5 (and above) is that the links will not work.
You will be able to compile your project, implement it on your web site, test it to see how it looks and behaves but the links on the menus will not respond.

As soon as you register your copy of DHTML Menu Builder and recompile your project, the links on the menus will work.