var filelist = new Array(
	'navigation_info_access',
	'navigation_info_company',
	'navigation_info_recruit',
	'navigation_machine_cadcam',
	'navigation_machine_circuit',
	'navigation_machine_parallel',
	'navigation_machine_simulation',
	'navigation_machine_test',
	'navigation_tech_cadcam',
	'navigation_tech_input',
	'navigation_tech_library',
	'navigation_tech_netdata',
	'navigation_work_assembly',
	'navigation_work_design',
	'navigation_work_manufacture',
	'navigation_work_si'
);

var Images = new Array();
var Ending = [ 'a', 'b', 'c', 'd', 'e', 'f', 'g' ];

	for ( var i = 0; i < filelist.length; i++ ) {
		for (var j = 0; j < Ending.length; j ++ ) {
			Images[ i ] = new Image();
			Images[ i ].src = '/i/navigation/' + filelist[ i ] + '_' + Ending[j] + '.png';
		}
	}