I am new to codeigniter framework, what i am trying to build is a navigation menu shared a cross the entire application, the navigation menu it contains categories which will be pulled out from a database for instance 

```
Home    +Products
         - Ham
         - Sausages
         - Etc 

1- I know how to pull this data from a database and i know how to make a navigation menu

2- What i don't know is, how to make this menu shared a cross the site, so when ever i choose product for instance i choosed Ham i will show all data from database according to ham.

3- I just need some help to guide me through this process..

```

thank you so much in advanced ....