I have been asked to make some 'emergency' changes on a Joomla! 1.5.23 website by a friend due to it being hacked. They have given me the only login details they are aware of which is an Administrator account. Not much use to me, read on.

The problem is that the changes I need to make involve having Super Administrator privileges (such as taking the website offline, changing access levels etc). I can't create a 'Super Admin' account as I only have Admin access.

They don't know any of the database nor hosting details. It's a bit of a mess to say the least, however I would like to try help them out. Is there anyway I can add an 'offline' page in place of the index.php? That way the site is offline at least, which is what they want.

Any suggestions?

I have been asked to make some 'emergency' changes on a Joomla! 1.5.23 website by a friend due to it being hacked. They have given me the only login details they are aware of which is an Administrator account. Not much use to me, read on.

The problem is that the changes I need to make involve having Super Administrator privileges (such as taking the website offline, changing access levels etc). I can't create a 'Super Admin' account as I only have Admin access.

They don't know any of the database nor hosting details. It's a bit of a mess to say the least, however I would like to try help them out. Is there anyway I can add an 'offline' page in place of the index.php? That way the site is offline at least, which is what they want.

Update 1

I have ftp access.

Any suggestions?