Return Only Specified Pages from get_navigation()?

[Golpar Tah]

Hello,

I'm looking for a way to output only specified pages using the get_navigation() function. In the example below, I have two categories of pages. For Category 1 I want only pages 1 through 4 returned and Category 2 to continue with 5 through 9. How can this be done?

Thanks for any suggestions.

Category 1
Page 1

Page 2

Page 3

Page 4


Category 2
Page 5

Page 6

Page 7

Page 8

Page 9