如何创建自动提示以获得与谷歌搜索或实时搜索一样快的关键字

I am creating auto suggest function in my website search box, every time the user press a new key, javascript call a webservice on the server side to get 10 most relevant keywords from the db and gives to the javascript again, and javascript populate the search autosuggest list.I am creating auto suggest function in my websi