font-weight (CSS2)

jQuery.support is a collection of properties that represent the presence of different browser features or bugs. Primarily intended for jQuery's internal use; specific properties may be removed when they are no longer needed internally to improve page startup performance.

jQuery.browser contains flags for the useragent, read from navigator.userAgent. We recommend against using this property; please try to use feature detection instead (see jQuery.support). jQuery.browser may be moved to a plugin in a future release of jQuery.