how i can remove parameters from url , like i have page
http://www.abc.pk/index.php?_a=viewCat&cat_id=1 to http://www.pakonlineshop.pk/mens-fashion
i have tried many options but did not get , if i use this rule
#RewriteCond %{QUERY_STRING} (.*)$
#RewriteCond %{REQUEST_FILENAME} !-f
#RewriteRule ([^/]*)$ index.php?_a=viewCat&cat_id=$1 [NC]
this loads some category's products on http://www.pakonlineshop.pk