* Returns a function to use in pseudos for :enabled/:disabled * @param {Boolean} disabled true for :disabled; false for :enabled

Common support for independent_X routines, handling all of the combinations that can result. The opts arg has: bit 0 set if all elements are

used in _move_from (where we can move the old value instead of copying it

Get the internal overhead associated with chunk p

get_iter() in sparsetable needs it

* Checks document order of two siblings * @param {Element} a * @param {Element} b * @returns {Number} Returns less than 0 if a precedes b, greater