Global Configuration save problem and Media Manager problem - Joomla! Forum - community, help and support

i've designed website school , works flawlessly when updating outside of schools internet environment. when accessing site via schools internet connection it's different story.

if try save changes in global configuration or try upload docs or images via media manager (when accessing site @ school) not allow this....if same thing on other internet connection there no problem @ , site works perfectly.

i'm pretty new joomla , i'm baffled completely..

the problem doesn't seem browser related i've tried ie7 , ie8 @ school (with same problem above).

- , i've used ie7 , ie8 outside of school without problems what-so-ever.

does have ideas problem might lie? might cause?

many offer:) justin

when access site inside vs outside, urls change?

for example, outside do:
http://www.yourdomain.com/

but inside can like:
http://machinename/

that 1 cause.

let me know if isn't issue , try come more things try.