Why is it inaccessible to create a form with no submit button?
http://ux.stackexchange.com/questions/23440/why-is-it-inaccessible-to-create-a-form-with-no-submit-button
http://ux.stackexchange.com/questions/23440/why-is-it-inaccessible-to-create-a-form-with-no-submit-button
WCAG 2.0 - 3.2.2 On Input
http://www.w3.org/TR/2008/REC-WCAG20-20081211/#consistent-behavior-unpredictable-change
http://www.w3.org/TR/2008/REC-WCAG20-20081211/#consistent-behavior-unpredictable-change