var agent = navigator.userAgent;
if(navigator.appVersion.indexOf('Mac') > 1){
	document.write('<link rel="stylesheet" href="/styles/font_mac.css" type="text/css" media="screen">');
}else if(agent.indexOf('Win') >= 0 && navigator.appVersion.indexOf('M')!=-1){
	document.write('<link rel="stylesheet" href="/styles/font_wie.css" type="text/css" media="screen">');
}else if(agent.indexOf('Win') >= 0 && navigator.appName.charAt(0) == "N" && navigator.appVersion.charAt(0) >= 4){
	document.write('<link rel="stylesheet" href="/styles/font_wns.css" type="text/css" media="screen">');
}else{
	document.write('<link rel="stylesheet" href="/styles/font_else.css" type="text/css" media="screen">');
}