Index: ui.accordion.js
===================================================================
--- ui.accordion.js	(revision 4906)
+++ ui.accordion.js	(working copy)
@@ -43,7 +43,7 @@
 	this.options = options = $.extend({}, $.ui.accordion.defaults, options);
 	this.element = container;
 	
-	$(container).addClass("ui-accordion");
+	$(container).addClass('ui-accordion-container ui-accordion');
 	
 	if ( options.navigation ) {
 		var current = $(container).find("a").filter(options.navigationFilter);
@@ -60,6 +60,9 @@
 	// calculate active if not specified, using the first header
 	options.headers = $(container).find(options.header);
 	options.active = findActive(options.headers, options.active);
+	
+	// add classNames and spans to headers
+	options.headers.addClass('ui-accordion-link').prepend('<span class="ui-accordion-left"></span>').append('<span class="ui-accordion-right"></span>');
 
 	if ( options.fillSpace ) {
 		var maxHeight = $(container).parent().height();