function ShowSortButton($sort, $mailbox, $Up, $Down) {
/* Figure out which image we want to use. */
if ($sort != $Up && $sort != $Down) {
- $img = 'sort_none.gif';
+ $img = 'sort_none.png';
$which = $Up;
} elseif ($sort == $Up) {
- $img = 'up_pointer.gif';
+ $img = 'up_pointer.png';
$which = $Down;
} else {
- $img = 'down_pointer.gif';
+ $img = 'down_pointer.png';
$which = 6;
}