If you wanted a smooth transition (no need to submit the page to get the ability to change it) then you'll probably want to use Ajax. A more unweildy version (but easier to code) would just to put checkboxes next to each entry, allow the user to select which ones they want to edit, and then submit the page which'd generate a new one based on which boxes they checked.
Thanks for the suggestion.
While using disabled would automatically remove record data during the save process. Readonly is good for text boxes but I'm using radio and listboxes too.
Considering onSelect for field highlighting; if I can't lock fields prior to use, I'll draw obvious attention to their selection. Maybe this will curve potential errors.