array.js in jextend-0.1.2

- old
+ new

@@ -1,7 +1,15 @@
\ No newline at end of file
+Array.prototype.contains = function (element) {
+  for (var i = 0; i < this.length; i++) {
+    if (this[i] == element) {
+      return true;
+    }
+  }
+  return false;
+};