Krabaton/class extend in JS

## class extend in JS
function extend(Child, Parent) {
		var F = function() {}
		F.prototype = Parent.prototype
		Child.prototype = new F()
		Child.prototype.constructor = Child
		Child.superclass = Parent.prototype
} // Child extend Parent {};
	function extend(Child, Parent) {
	var F = function() {}
	F.prototype = Parent.prototype
	Child.prototype = new F()
	Child.prototype.constructor = Child
	Child.superclass = Parent.prototype
	} // Child extend Parent {};