Reverse Pagging on CI

[eluser]chandrajatnika[/eluser]
Help me please,
I want to show a reverse pagging on my aplication
normal pagging...
at first page showed
1 2 3 > Last
at last page showed
First < 64 63 65

reverse pagging...
at first page showed
First < 64 63 65
at last page showed
1 2 3 > Last

how to create it? is I have to modify Pagination.php on CI system? or create another library?
please send me an example....
Thank you very much