split code into several files

lib.js

@@ -0,0 +1,48 @@
+function addListener(elem, type, callback) {
+  if (elem.addEventListener) {
+    return elem.addEventListener(type, callback, false);
+  }
+  if (elem.attachEvent) {
+    elem.attachEvent("on" + type, function() {
+      callback(window.event);
+    });
+  }
+}
+
+function setText(elem, text) {
+  if (elem.innerText !== undefined) {
+    elem.innerText = text;
+  }
+  if (elem.textContent !== undefined) {
+    elem.textContent = text;
+  }
+}    
+    
+function stopEvent(e) {
+  stopPropagation(e);
+  preventDefault(e);
+  return false;
+}
+
+function stopPropagation(e) {
+  if (e.stopPropagation)
+    e.stopPropagation();
+  else
+    e.cancelBubble = true;
+}
+
+function preventDefault (e)
+{
+  if (e.preventDefault)
+    e.preventDefault();
+  else
+    e.returnValue = false;
+}
+
+inherits = function (ctor, superCtor) {
+  var tempCtor = function(){};
+  tempCtor.prototype = superCtor.prototype;
+  ctor.super_ = superCtor.prototype;
+  ctor.prototype = new tempCtor();
+  ctor.prototype.constructor = ctor;
+};