diff --git a/index.html b/index.html
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--- /dev/null
+++ b/index.html
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+<!DOCTYPE html>
+<html>
+<head>
+	<title>Oop.JS: Object Oriented JavaScript Class Library</title>
+</head>
+<body>
+	<script src="oop.js"></script>
+	<script>
+		var Animal = oop.Class("Animal")
+			.construct(function (name) {
+				this.name = name;
+			})
+			.method("sleep", function () {
+				alert("ZzZzZzZzZzZzZzZzZz");
+			})
+			.build();
+
+		var Cat = oop.Class("Cat")
+			.extends(Animal)
+			.method("purr", function () {
+				alert("purrrrrrrrrrrrr");
+			})
+			.build();
+			
+		var Dog = oop.Class("Dog")
+			.extends(Animal)
+			.method("bark", function () {
+				alert("Wua bark woop arf");
+			})
+			.build();			
+
+
+		var lilo = new Cat("Lilo");
+		var luz = new Dog("Luz");
+		
+		alert(lilo.name); // Lilo
+		alert(luz.name); // Luz
+		
+		lilo.sleep(); // ZzZzZzZzZzZzZzZzZz
+		luz.sleep(); // ZzZzZzZzZzZzZzZzZz
+		
+		lilo.purr(); // purrrrrrrrrrrrr
+		luz.bark(); // Wua bark woop arf
+	</script>
+</body>
+</html>
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diff --git a/oop.js b/oop.js
new file mode 100644
index 0000000..848526b
--- /dev/null
+++ b/oop.js
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+(function(window, undefined) {
+
+  var oop = (function(){
+
+	var Class = function (klass) {
+		var Klass, definitor;
+
+		Klass = function (conf) {
+			var that = this;
+			var conf = conf || {};
+			this.type = klass;
+
+			if (Klass.parent && Klass.parent.hasOwnProperty("construct")) {				Klass.parent.construct.call(this, conf);
+			}
+			
+			if (Klass.prototype.hasOwnProperty("construct")) {
+				Klass.prototype.construct.call(this, conf);			}
+
+			return this;
+		};
+	
+		definitor = {
+	
+			"extends": (function () {
+				var F = function () {};
+				return function (Parent) {
+					F.prototype = Parent.prototype;
+					Klass.prototype = new F();
+					Klass.parent = Parent.prototype;
+					Klass.prototype.constructor = Klass;
+	
+					return definitor;
+				}
+			}()),
+	
+			"construct": function (func) {
+				Klass.prototype.construct = func;
+	
+				return definitor;
+			},
+	
+			"method": function (member, param) {
+				Klass.prototype[member] = param;
+	
+				return definitor;
+			},
+
+			"build": function () {
+				return Klass;
+			}
+	
+	    };
+	
+	    return definitor;
+	
+	};
+
+    var core = {
+		"Class": Class
+    };
+
+    return core;
+
+  })();
+
+  window.oop = oop;
+
+})(window);
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