Prevent images from moving (with a mouse) while browsing

When I am finished with the page. When its done. I want somehow to lock the images (for ex. header logo layer - try it out: http://www.lipanska.cz/ move with the header text EWITA). On the other side at https://www.google.com the logo is locked and I cant move with it.

How could i lock them? Thank you very much for your time!