var Mac = navigator.appVersion.indexOf('Mac',0) != -1;
var Win = navigator.appVersion.indexOf('Win',0) != -1;
var IE = navigator.appName.indexOf('Microsoft Internet Explorer',0)!= -1;
var NN = navigator.appName.indexOf('Netscape',0) != -1;
var Vr = navigator.userAgent;

if(Win && IE){
		document.write('<link rel="stylesheet" href="../common/font_style/win_ie.css" type="text/css">');
}
else if(Win && NN){
		if(Vr.indexOf('Mozilla/5',0)!= -1){
		document.write('<link rel="stylesheet" href="../common/font_style/win_nn.css" type="text/css">');
		}
}
else if(Mac && IE){
		document.write('<link rel="stylesheet" href="../common/font_style/mac_ie.css" type="text/css">');
}
else if(Mac && NN){
		if(Vr.indexOf('Mozilla/5',0)!= -1){
		document.write('<link rel="stylesheet" href="../common/font_style/mac_nn.css" type="text/css">');
	}
}