OSName = "unknown";
bName = "unknown";
bVer = "unknown";

if (navigator.appVersion.indexOf("Mac") > 0) OSname = "Mac";
if (navigator.appVersion.indexOf("Win") > 0) OSname = "Win";

if (navigator.appName.substring(0,8) == "Netscape")
bName = "NN";
if (navigator.appName.substring(0,9) == "Microsoft")
bName = "IE";

if (parseInt(navigator.appVersion) >= 3) bVer="3x";
if (parseInt(navigator.appVersion) >= 4) bVer="4x";
if (parseInt(navigator.appVersion) >= 5) bVer="5x";
if (parseInt(navigator.appVersion) >= 6) bVer="6x";


if (OSname == "Mac" && bName=="IE")
	document.write("<link  href='../style/mac.css' type='text/css' rel='stylesheet'>");
else if (OSname=="Win" && bName !="NN")	
	document.write("<link  href='../style/pc.css' type='text/css' rel='stylesheet'>");
else 
	document.write("<link  href='../style/blank.css' type='text/css' rel='stylesheet'>");