ok, I misunderstood and thought you were talking about an xp pro dev machine where you were running the site locally on your desktop.
the errors you posted are javascript errors happening in the web browser not server side errors.
on any machine or browser where a problem is happening do further diagnosis of the javascript errors, ie they might be failing to load some scripts, you can determine this using the network tab in web browser dev tools
definitely if some of the client machines don't have internet access you would need to host the jquery files locally on your web server or they will fail to load and this will result in script errors.
You said you did this but you need to verify you did it correctly by making sure the scripts are actually loading, again browser dev tools, network tab will tell you about any resources that are failing to load