Thank you guys for checking out my website.
nullvariable
I fixed some errors but still have some left although I tried to change the doctype to frameset and back. As long it works fine in browsers I don't think that is too important. I also made "find cheap hostels" visible to visitors. Thank you for this suggestion. Regarding that javascript error - it is a script provided by hostelsclub and I have no idea what could be wrong. I'll try to get in touch with them.
davebarnes
That's strange that you couldn't use "compare hotel rates" form. It is an iframe form hotelscombined and it should work.
Rod Abbotson
Regarding the mix of tables and css - I wanted to make everything in css but it seemed that it takes much more work to position all div elements as I wanted. I guess some things still work easier with tables for most browsers. Frameset is used to hide my hotel and hostel affiliate URLs and keep my website in the address bar.
By the way, interesting idea about mobile devices. I will check that.