Find out if a number is between two others

isBetween.js

	// Find out if number is between a and b
	if (typeof(Number.prototype.isBetween) === "undefined") {
		Number.prototype.isBetween = function(a, b) {
			var max = Math.max(a,b),
				min = Math.min(a,b);
			return (this <= max) && (this >= min);
		};
	}