// varsion check //

var Win=(navigator.userAgent.indexOf("Win")!=-1);

var Mac=(navigator.userAgent.indexOf("Mac")!=-1);

var Explorer=(navigator.appName.indexOf("Explorer")!=-1);

var Netscape=(navigator.appName.indexOf("Netscape")!=-1);



if

(Win && Explorer)

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



else if

(Win && Netscape) 

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



else if

(Mac && Explorer) 

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



else if

(Mac && Netscape) 

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