Drupal 7 grouping of autocomplete suggestions

I have an places autocomplete textfield. With the core drupal autocomplete i am able to show suggestions of places开发者_JAVA技巧.

Now i need to group these suggestions by type à la OS X spotlight. Example :

• Hotels (34)
  • Hotel 1
  • Hotel 2
  • ...
• Restaurants (65)
  • Restaurant 1
  • ...

How do i override drupal's autocomplete to achieve this ? Or should i build this independently from drupal's autocomplete ?

(Reference: http://bitnr.drupalgardens.com/content/autocomplete-callbacks-drupal-7-or-fun-dbqueryrange-and)

I believe you only get to return a flat array, similar to D6.

I would solve this with jQuery and AJAX.

HI please check the link , i have posted my comments here with sample code http://drupal.org/node/1197448