refactoring AjaxHelper a bit so that it calls shared method from JavascriptHelper to add attributes for :confirm

actionpack/lib/action_view/helpers/ajax_helper.rb

@@ -293,7 +293,11 @@ module ActionView
         attributes = {}
         attributes.merge!(:rel => "nofollow") if options[:method] && options[:method].downcase == "delete"
         attributes.merge!(extract_remote_attributes!(options))
-        attributes.merge!(extract_confirm_attributes!(options))
+        
+        if confirm = options.delete(:confirm)
+          add_confirm_to_attributes!(attributes, confirm)
+        end
+
         attributes.merge!(html_options)
 
         content_tag(:a, name, attributes.merge(:href => "#"))
@@ -305,7 +309,11 @@ module ActionView
       # and defining callbacks is the same as link_to_remote.
       def button_to_remote(name, options = {}, html_options = {})
         attributes = html_options.merge!(:type => "button", :value => name)
-        attributes.merge!(extract_confirm_attributes!(options))
+
+        if confirm = options.delete(:confirm)
+          add_confirm_to_attributes!(attributes, confirm)
+        end
+
         attributes.merge!(extract_remote_attributes!(options))
 
         tag(:input, attributes)
@@ -485,16 +493,6 @@ module ActionView
 
       private
 
-        def extract_confirm_attributes!(options)
-          attributes = {}
-
-          if options && options[:confirm] 
-            attributes["data-confirm"] = options.delete(:confirm)
-          end
-
-          attributes
-        end
-
         def extract_remote_attributes!(options)
           attributes = options.delete(:html) || {}