[jQuery] [jQuery Validate]Validating for incremental form

[jQuery] [jQuery Validate]Validating for incremental form


I have the form:
<form>
<div id="portion1">
... some inputs ...
</div>
<div id="portion2">
... some inputs ...
</div>
<div id="portion3">
... some inputs ...
</div>
</form>
By default, only #portion1 is visible. If inputs inside it are all
valid, #portion2 will be visible and #portion1 will be hidden, and so
on.
The problem is that jQuery Validate will only validate the whole form,
so something like $('#portion1').validate().form() won't work.
So, is there a way to achieve this?
Thanks.