Bravo List - Category settings

Something it went wrong in staff panel i have my categories
hxxp://xxxxxxxxxxx/browse.php?cat=4 this way

in browse.php when i click on category apear
hxxp://xxxxxx/browse.php?browse_categories&category=1

i find the line in browse.php i belive this is the problem

Code:

$sqfield = "&browse_categories&category=".intval($_GET['category']);

How to make in browse to show browse.php?cat=4

I wish to create a second browse with a sum of 3 or 4 categories
something like cat1&2&3 but i don't know how to combined to show only thos category together.

Thanks:drink: