/* user agent */

var _agent = navigator.userAgent.toLowerCase();

var _an    = navigator.appName;

var _ua    = navigator.userAgent;



/* platform */

var _win = (_agent.indexOf('win') != -1);

var _mac = (_agent.indexOf('mac') != -1);



/* browser version */

var _major = parseInt(navigator.appVersion);

var _minor = parseFloat(navigator.appVersion);



/* internet explorer */

var _ie    = (_agent.indexOf('msie ') != -1);



/* netscape */

var _ns    = ((_agent.indexOf('mozilla') != -1) && (_agent.indexOf('compatible') == -1));

var _ns4   = (_ns && (_major == 4));



/* safari */

var _saf   = (_ua.indexOf("Safari") != -1);



/* opera */

var _opera  = (_agent.indexOf('opera') != -1);



/* Mac OS　判定 */

var _mac_os10_ie = (_ua.indexOf('MSIE 5.2') != -1) || ((_ua.indexOf('mozilla') != -1) && (_ua.indexOf('Mac OS X') != -1));

var _mac_os10_ns = (_ua.indexOf('Mac OS X') != -1);





/* 各ブラウザを判別しての分岐

   Opera、MozillaはそれぞれIE6、NN6と判別してしまう可能性があるので、先に記述する

*/





/* Win用 */



if

((_win && _ie)!=(_win && _opera))

{document.write('<LINK rel="stylesheet" href="common/css/win_ie.css" type="text/css">');}



else if

(_win && _ns4)

{document.write('<LINK rel="stylesheet" href="common/css/win_nn4.css" type="text/css">');}





/* Mac用 */



else if

(_mac && _ns4)

{document.write('<LINK rel="stylesheet" href="common/css/mac_nn4.css" type="text/css">');}



else if

((_mac)!=((_mac_os10_ns)||(_mac_os10_ie)))

{document.write('<LINK rel="stylesheet" href="common/css/mac_os9.css" type="text/css">');}



else

{document.write('<LINK rel="stylesheet" href="common/css/other.css" type="text/css">');}