Add mkws.objectInheritingFrom function, code is from Douglas

Crockford's article "Prototypal Inheritance in JavaScript":
	http://javascript.crockford.com/prototypal.html
mkws.objectInheritingFrom behaves the same as Object.create, but since
the latter is not available in IE8 we can't use it.

Fixes bug MKWS-77 *again*.

diff --git a/src/mkws-core.js b/src/mkws-core.js
index 01f82c8..6b1e0f6 100644 (file)
--- a/src/mkws-core.js
+++ b/src/mkws-core.js
@@ -144,13 +144,25 @@ mkws.setMkwsConfig = function(overrides) {
        dummy: "dummy"
     };
 
        dummy: "dummy"
     };
 

-    mkws.config = Object.create(config_default);
+    mkws.config = mkws.objectInheritingFrom(config_default);

     for (var k in overrides) {
        mkws.config[k] = overrides[k];
     }
 };
 
 
     for (var k in overrides) {
        mkws.config[k] = overrides[k];
     }
 };
 
 

+// This code is from Douglas Crockford's article "Prototypal Inheritance in JavaScript"
+// http://javascript.crockford.com/prototypal.html
+// mkws.objectInheritingFrom behaves the same as Object.create,
+// but since the latter is not available in IE8 we can't use it.
+//
+mkws.objectInheritingFrom = function(o) {
+    function F() {}
+    F.prototype = o;
+    return new F();
+}
+
+

 // The following functions are dispatchers for team methods that
 // are called from the UI using a team-name rather than implicit
 // context.
 // The following functions are dispatchers for team methods that
 // are called from the UI using a team-name rather than implicit
 // context.