next page not work in new album

hi
i have problem and not found the solution for it when i do search and find the pictures the adess is
main.php?keyword=thekeyword&cmd=albumnew
and its work fine but when i do nextpage its enter
main.php?cmd=albumnew&var3=98
and its showing the newest pictures
he delete the keyword=thekeyword from the line
why is that?!?!