Slow down now... don't give me too much information all at once...
So you are accessing the site over the internet, not via mobile device. And you are using Firefox. What forum skin style are you using, default or speedfire? Have you gone through your browser security settings to see what scripts you have blocked and what scripts you have allowed for the site (since that is what the problem most likely is). Have you lived on the edge and checked to see if you have the same problem with a different browser?