Creates a HTML 'input type="button"' tag with a very specific onclick
handler that submits the form given by the jQuery selector
C<$form_selector> to the URL C<$url> (the actual JavaScript function
Creates a HTML 'input type="button"' tag with a very specific onclick
handler that submits the form given by the jQuery selector
C<$form_selector> to the URL C<$url> (the actual JavaScript function