[jQuery] [validate] Custom functions onfocusin / -out

[Philipp]

Hi!

I added a nice little tweak which allows me to define custom functions
called on (un) focussing a form element:

jquery.validate.js got three additional lines at the end of onfocusin
function (line 200):
                        if (this.settings.focusFunction) {
                                this.settings.focusFunction(element);
                        }
and at the end of onfocusout function:
                        if (this.settings.blurFunction) {
                                this.settings.blurFunction(element);
                        }

By defining a "focusFunction" / "blurFunction" within a jQuery
('#...').validate({})-block I was able to add a custom behaviour to
those two events without writing additional JavaScript code. In my
case I simply display or hide a div containing some help for the form
element.

Maybe this little code change will help somebody or even find its way
to the official release.

Kind regards and thank you for your validator!
 Philipp