Permanent Links on Top are acting up

[tivicrdotcom]

Hi fellow geeks, so I have this permanent links on to of the pages which act like a top menu but they act up. For example if you visit the page sometimes they show up, sometimes they don't and you have to refresh the page, and if you click on them the same problem occurs where they vanish and other links appear. Also the search bar sometimes appears and vanishes. You can see the site here:

http://www.tivicr.com/seguritico

 

The links are:

    Alarmas     Camaras     Discreto     Personal     contacto

 

Thanks!