var mac = (navigator.userAgent.indexOf("Mac") > 0) ? 1 : 0;

if(mac==0){
		document.write ('<script src="js/pc_win.js" type="text/javascript" language="Javascript"></script>');
	}else{
		document.write ('<script src="js/mac_win.js" type="text/javascript" language="Javascript"></script>');
	}