I'm building a sign-up form filled with multiple input fields. To increase the rate in which the form is filled out I decided to dynamically set the tabindex at the first input field. Naturally after tabbing through the collection of input fields it defaults to the beginning of the DOM and continue down and around the form.
My question I guess you can say is split into two parts. The first being, should the tab index reset after the fields are tabbed through or continue straight down the DOM from the form? The second as stated in the title, when is it usually appropriate to change a site's tabindex?