[jQuery] jquery validation

[jQuery] jquery validation


How can i add ID="error" instead of a class using jquery.
Also is there a way to say that "you must uncheck the box before
submitting the form.
Im using http://jquery.bassistance.de/validate/demo/milk/ as an
example.
Also is there a way to use jquery to show/hide passwords, i done it
using js but i want to use jquery
I want to add these. Can anyone help