1 files changed, 13 insertions, 0 deletions
diff --git a/lib/utils.js b/lib/utils.js
index 4c05610c..7fc2a6b9 100644
--- a/lib/utils.js
+++ b/lib/utils.js
@@ -38,4 +38,17 @@ var utils = {
       }
     return result;
   },
+
+  /*
+   * Takes a dot-notation object string and call the function
+   * that it points to with the correct value for 'this'.
+   */
+  invokeCommandString: function(str, argArray) {
+    var components = str.split('.');
+    var obj = window;
+    for (var i = 0; i < components.length - 1; i++)
+      obj = obj[components[i]];
+    var func = obj[components.pop()];
+    return func.apply(obj, argArray);
+  },
 };