adding picture quality to script

[duny]

is there a way to add picture quality to this portion of the script

$menu = $HTTP_SESSION_VARS['_amember_user']['name_l'];
            $menuitem = explode("&",$menu); 
            $new_w = $menuitem[0]; 
            $new_h= $menuitem[1];
            header("Content-type: image/jpeg"); 
            $dst_img=ImageCreate($new_w,$new_h); 
            $src_img=ImageCreateFromJPEG("$d"); 
            ImageCopyResized($dst_img,$src_img,0,0,0,0,$new_w,$new_h,ImageSX($src_img),ImageSY($src_img)); 
            ImageJPEG($dst_img,"$d");              

[Moonglobe]

check the manual for [man]imagejpeg/man. third parameter.