[Javascript] disabling form on submit

[Mike Dougherty]

My solution to having a submit be processed twice was to timestamp the form in a hidden field. 
 When the first form is submitted, store the timestamp.  If that timestamp is returned again, then 
just ignore the form submission (and either notify the user, or flow through to another page 
without prompting)

>My idea is to have an include that disables all the form elements on
>submit of the form (to signal that it is processing, and to prevent the
>user from pressing the submit button multiple times).