[jQuery] Using jQuery Validation (validate), are there any events when a remote validation call is made

[jQuery] Using jQuery Validation (validate), are there any events when a remote validation call is made


Hi all,
I am preparing a form and would like to mimic the functionality of the
Twitter sign up form here: https://twitter.com/signup
Here are my basic requirements, is this possible with the jQuery
validation plugin (http://docs.jquery.com/Plugins/Validation):
1. When an input has focus, display a hint (I guess I can do this
independently of the plugin)
2. If the input is invalid show a message (I know this can be done)
3. When using a remote ajax validation, show a "checking..." wait
message - not sure about this
4. If the input is valid show an "ok" message - not sure about this
Any hints, tips or ideas would be great.
Thanks in advance
Andy