hixie: Make the index a bit clearer and 'error' events and 'onerror' (whatwg r4346)

hixie: Make the index a bit clearer and 'error' events and 'onerror'
(whatwg r4346)

http://dev.w3.org/cvsweb/html5/spec/Overview.html?r1=1.3478&r2=1.3479&f=h
http://html5.org/tools/web-apps-tracker?from=4345&to=4346

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RCS file: /sources/public/html5/spec/Overview.html,v
retrieving revision 1.3478
retrieving revision 1.3479
diff -u -d -r1.3478 -r1.3479
--- Overview.html	27 Oct 2009 08:14:45 -0000	1.3478
+++ Overview.html	27 Oct 2009 09:44:32 -0000	1.3479
@@ -70076,7 +70076,7 @@
 
     <tr><th> <code title="">onerror</code>
      <td> <code title="handler-window-onerror"><a href="#handler-window-onerror">body</a></code>
-     <td> <code title="event-error">error</code> event handler for <code><a href="#window">Window</a></code> object
+     <td> <code title="event-error">error</code> event handler for <code><a href="#window">Window</a></code> object, and handler for <a href="#runtime-script-errors">script error notifications</a>
      <td> <a href="#event-handler-content-attributes" title="event handler content attributes">Event handler content attribute</a>
 
     <tr><th> <code title="">onerror</code>
@@ -70677,7 +70677,7 @@
 
     <tr><td> <code title="event-error">error</code>
      <td> <code>Event</code>
-     <td> Fired when a network or script error occurs
+     <td> Fired at elements when network and script errors occur
 
     <tr><td> <code title="event-focus">focus</code>
      <td> <code>Event</code>