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);
var Version=navigator.appVersion.charAt(0);

if
(Win && Explorer && Version=="4")
{document.write('<LINK rel="stylesheet" href="/common/css/font_win.css" type="text/css">');}

else if
	(Explorer && Mac && Version=="4")
	{document.write('<LINK rel="stylesheet" href="/common/css/font_mac.css" type="text/css">');}
	
else
	{document.write('<LINK rel="stylesheet" href="/common/css/font_other.css" type="text/css">');}