diff --git a/IPython/html/tests/README.md b/IPython/html/tests/README.md
index 2a91fff..b5c04c4 100644
--- a/IPython/html/tests/README.md
+++ b/IPython/html/tests/README.md
@@ -1,23 +1,28 @@
-# IPython Notebook Javascript Tests
+# IPython Notebook JavaScript Tests
 
-Regression tests for the web notebook. These tests depend on
-[CasperJS](http://casperjs.org/), which in turn requires
-a recent version of [PhantomJS](http://phantomjs.org/).
+This directory includes regression tests for the web notebook. These tests
+depend on [CasperJS](http://casperjs.org/), which in turn requires a recent
+version of [PhantomJS](http://phantomjs.org/).
 
-Run the tests using:
+The JavaScript tests are organized into subdirectories that match those in
+`static` (`base', `notebook`, `services`, `tree`, etc.).
+
+To run all of the JavaScript tests do:
 
 ```
 iptest js
 ```
 
-For finer granularity, or to specify more options, you can also run the
-following `casperjs` command
+To run the JavaScript tests in a single subdirectory (`notebook` in this
+case) do:
 
-```sh
-/path/to/bin/casperjs test --includes=util.js test_cases
+```
+iptest js/notebook
 ```
 
-The file `util.js` contains utility functions for tests, including a path to a
-running notebook server on localhost (http://127.0.0.1) with the port number
-specified as a command line argument to the test suite. Port 8888 is used if
-`--port=` is not specified.
+The file `util.js` contains utility functions for tests, including a path to
+a running notebook server on localhost (http://127.0.0.1) with the port
+number specified as a command line argument to the test suite. Port 8888 is
+used if `--port=` is not specified. When you run these tests using `iptest`
+you do not, however, have to start a notebook server yourself; that is done
+automatically.