On "dialog" boxes it displays a close button on the upper right corner which does basically nothing. Can it be assigned as the Cancel command or be removed from the window that pops up?

Yes we need to remove that button.

I think its better to assign it to the cancel button.

Right, but in order to be able to do that correctly, the HTML dialogs code must be made to have a "default" action for hitting the close button. Most dialogs will have a "cancel" button, but not all, and it would make it hard to guess which form submit button on the page was the one the author of the HTML dialog desired without explicit instructions. Nisheeth, did any HTML dialog improvements happen, or should I proceed and remove the close button?

batch-reassigning all Garrett Blythe bugs to Don Melton

Yep, we have to fix this.

Resolved as WONTFIX. We're not fixing Mozilla classic bugs at this point ...

VERIFIED, MozillaClassic is dead.