IE compatibility

[DavidSmith]

I have added functional compatibilty code for internet explorer, this consists of having a hidden input element in forms called PostAction? and a function called PostActionString? in

scripts/ie_compat.js

This function stores the string value given in the hidden form parameter and submits the form. This is necessary in order to have multiple buttons on the one form under IE and firefox that display different text to what they post.

However, visually, internet explorer displays borders around all the tables on the pages. This should be able to be corrected with some styles rules, but I haven't had the time to investigate fully. It's not as simple as setting TR{ border ... or TD { border: ...