var greaterThanThis = function (x) { return x > this; };
var greaterThanOne = function (x) { return x > 1; };
var res = filter(greaterThanOne, [-1, 0, 1, 2, 3]);
alert( objEqual(res, [2, 3]), "filter works" );
var res = filter(greaterThanThis, [-1, 0, 1, 2, 3], 1);
alert( objEqual(res, [2, 3]), "filter self works" );
var res2 = xfilter(greaterThanOne, -1, 0, 1, 2, 3);
alert( objEqual(res2, res), "xfilter works" );
alert(objMax(1, 2, 9, 12, 42, -16, 16), 42, "objMax works (with numbers)");
alert(objMin(1, 2, 9, 12, 42, -16, 16), -16, "objMin works (with numbers)");