if(navigator.appVersion.indexOf("Mac",0) != -1){
	if(navigator.appVersion.indexOf("MSIE 5",0) != -1 || navigator.userAgent.indexOf("Gecko", 0) != -1){
		document.write('<link rel="stylesheet" type="text/css" href="css/macie5.css">');
	}else{
		document.write('<link rel="stylesheet" type="text/css" href="css/mac.css">');
	}
}else{
		document.write('<link rel="stylesheet" type="text/css" href="css/win.css">');
}