Target for AJAX results
DONE:
tag-based:
ajaxlink-popup (url from a.href)
ajaxlink-update-targetId (url from a.href)
ajaxform-submit (url from form.action)
ajaxform-update-targetId (url from form.action)
TODO
event-based:
ajax-change-update-targetId a:url="url"
ajax-click-...
ajax-submit-update-targetId (requires submit event bubbling)
ajax-(click|change|submit) a:url="url" a:target="id" a:method="update|insert-before|insert-after|replace"