Hi, my site is: http://weeklyspecials.co.nz/index.php. There are pics on this page that are too distorted. How to correct this problem?

The php pages in the site were written by a coder who could not finish the job, and not being a coder, means I can't launch the site until I can get some help to tidy up the little bits n pieces that need work.

Is there anyone who can assist?