Register button not clickable

Hello!
I have such problems with my TWN2 for Joomla 2.5:
1. The register button not clickable and it doesn't open pop-up menu.
2. Search is not working as in demo version predictive drop-down function.
3. Style swithcer doesn't effect.

Please, help me fix this problems.

Regards,
Ruslan

i have same problem with register button , when i right click and open new tab , its opening registration page , but nothing when leftclick