Chosen and jQuery prop() vs attr()

[pfiller]

As reported in #327, jQuery 1.6 adds the prop() function and makes a change to attr(). When setting properties directly on a DOM element, Chosen should probably move away from either so support can extend across multiple versions of jQuery.

Think

@is_disabled = @form_field_jq[0].disabled

Not

@is_disabled = @form_field_jq.attr "disabled"

There's a good discussion on Stack Overflow regarding this issue:
http://stackoverflow.com/questions/5874652/prop-vs-attr