//browser check
if( navigator.appVersion.indexOf("Mac")>1){//for Mac
	if( navigator.appName.charAt(0)=="M"){
	document.write("<link href='../css/mac_ie.css' rel='stylesheet' type='text/css'>");
	}
	else{
	document.write("<link href='../css/mac_nn.css' rel='stylesheet' type='text/css'>");
	}
}
else{//other 0S
	if( navigator.appName.charAt(0)=="M"){
	document.write("<link href='../css/win_ie.css' rel='stylesheet' type='text/css'>");
	}
	else{
	document.write("<link href='../css/win_nn.css' rel='stylesheet' type='text/css'>");
	}
}