function categories() {
		return array(
				array('name'		=> 'Console',
					  'cat'			=> '1000',
					  'subcata'		=> array('NDS'		=> '1010',
											 'PSP'		=> '1020',
											 'Wii'		=> '1030',
											 'Xbox'		=> '1040',
											 'Xbox 360'	=> '1050',
											 'PS3'		=> '1080')
				), array('name'		=> 'Movies',
						 'cat'		=> '2000',
						 'subcata'	=> array('SD'		=> '2030',
											 'HD'		=> '2040',
											 'Sport'	=> '2060')
				), array('name'		=> 'Audio',
						 'cat'		=> '3000',
						 'subcata'	=> array('MP3'		=> '3010',
											 'Video'	=> '3020',
											 'Lossless'	=> '3040')
				), array('name'		=> 'PC',
						 'cat'		=> '4000',
						 'subcata'	=> array('Mac'		=> '4030',
											 'Phone'	=> '4040',
											 'Games'	=> '4050')
				), array('name'		=> 'TV',
						 'cat'		=> '5000',
						 'subcata'	=> array('SD'		=> '5030',
											 'HD'		=> '5040',
											 'Sport'	=> '5060')
				), array('name'		=> 'XXX',
						 'cat'		=> '6000',
						 'subcata'	=> array('DVD'		=> '6010',
											 'WMV'		=> '6020',
											 'XviD'		=> '6030',
											 'x264'		=> '6040')
				), array('name'		=> 'Other',
						 'cat'		=> '7000',
						 'subcata'	=> array('Ebook'	=> '7020')
				)
		);
	} # categories

	function nabcat2spotcat($cat) {
		switch ($cat) {
			case 1000: return 'cat2_a3,cat2_a4,cat2_a5,cat2_a6,cat2_a7,cat2_a8,cat2_a9,cat2_a10,cat2_a11,cat2_a12';
			case 1010: return 'cat2_a10';
			case 1020: return 'cat2_a5';
			case 1030: return 'cat2_a11';
			case 1040: return 'cat2_a6';
			case 1050: return 'cat2_a7';
			case 1060: return 'cat2_a7';

			case 2000: return 'cat0_z0';
			case 2010:
			case 2030: return 'cat0_a0,cat0_a1,cat0_a2,cat0_a3,cat0_a10,~cat0_z1,~cat0_z2,~cat0_z3';
			case 2040: return 'cat0_a4,cat0_a6,cat0_a7,cat0_a8,cat0_a9,~cat0_z1,~cat0_z2,~cat0_z3';
			case 2060: return 'cat0_d18';

			case 3000: return 'cat1_a';
			case 3010: return 'cat1_a0';
			case 3020: return 'cat0_d13';
			case 3040: return 'cat1_a2,cat1_a4,cat1_a7,cat1_a8';

			case 4000: return 'cat3_a0';
			case 4030: return 'cat3_a1';
			case 4040: return 'cat3_a4,cat3_a5,cat3_a6,cat3_a7';
			case 4050: return 'cat2_a0,cat2_a1,cat2_a2';

			case 5000: return 'cat0_z1';
			case 5030: return 'cat0_z1,cat0_a0,cat0_a1,cat0_a2,cat0_a3,cat0_a10';
			case 5040: return 'cat0_z1,cat0_a4,cat0_a6,cat0_a7,cat0_a8,cat0_a9';
			case 5060: return 'cat0_z1,cat0_d18';

			case 6000: return 'cat0_z3';
			case 6010: return 'cat0_a3,cat0_a10,~cat0_z0,~cat0_z1,~cat0_z2';
			case 6020: return 'cat0_a1,cat0_a8,~cat0_z1,~cat0_z0,~cat0_z1,~cat0_z2';
			case 6030: return 'cat0_a0,~cat0_z0,~cat0_z1,~cat0_z2';
			case 6040: return 'cat0_a4,cat0_a6,cat0_a7,cat0_a8,cat0_a9,~cat0_z0,~cat0_z1,~cat0_z2';

			case 7020: return 'cat0_z2';
		}
	} # nabcat2spotcat

	function spotAcat2nabcat() {
		return Array(0 =>
				Array(0 => "2000|2030",
					  1 => "2000|2030",
					  2 => "2000|2030",
					  3 => "2000|2030",
					  4 => "2000|2040",
					  5 => "7000|7020",
					  6 => "2000|2040",
					  7 => "2000|2040",
					  8 => "2000|2040",
					  9 => "2000|2040",
					  10 => "2000|2030"),
			  1 =>
				Array(0	=> "3000|3010",
					  1 => "3000|3010",
					  2 => "3000|3040",
					  3 => "3000|3010",
					  4 => "3000|3040",
					  5 => "3000|3040",
					  6 => "3000|3010",
					  7 => "3000|3040",
					  8 => "3000|3040"),
			  2 =>
				Array(0 => "4000|4050",
					  1 => "4000|4030",
					  2 => "TUX",
					  3 => "PS",
					  4 => "PS2",
					  5 => "1000|1020",
					  6 => "1000|1040",
					  7 => "1000|1050",
					  8 => "GBA",
					  9 => "GC",
					  10 => "1000|1010",
					  11 => "1000|1030",
					  12 => "1000|1080",
					  13 => "4000|4040",
					  14 => "4000|4040",
					  15 => "4000|4040",
					  16 => "3DS"),
			  3 =>
				Array(0 => "4000|4020",
					  1 => "4000|4030",
					  2 => "TUX",
					  3 => "OS/2",
					  4 => "4000|4040",
					  5 => "NAV",
					  6 => "4000|4040",
					  7 => "4000|4040")
			);
	} # spotAcat2nabcat