mac = (navigator.appVersion.indexOf('Mac')!=-1)?true:false;
if(mac){
		document.write("<link rel='stylesheet' href='http://okumura-rubber.co.jp/css/mac.css' type='text/css'>");
}else{
		document.write("<link rel='stylesheet' href='http://okumura-rubber.co.jp/css/win.css' type='text/css'>");
	}