function getOSType()
{
var RetCode = "";
var uAgent = navigator.userAgent.toUpperCase();
if (uAgent.indexOf("MAC") >= 0) RetCode = "MacOS";
if (uAgent.indexOf("WIN") >= 0) RetCode = "Windows";
return RetCode;
}


function getBrowserName()
{
var aName = navigator.appName.toUpperCase();
var uName = navigator.userAgent.toUpperCase();
if (aName.indexOf("NETSCAPE") >= 0) return "Netscape";
if (aName.indexOf("MICROSOFT") >= 0) return "Explorer";
return "";
}


function getBrowserVersion()
{
var browser = getBrowserName();
var version = 0;
var s = 0;
var e = 0;
var appVer = navigator.appVersion;
if (browser == "Netscape")
{
s = appVer.indexOf(" ",0);
version = eval(appVer.substring(0,s));
if (version >= 5) version++;
}
if (browser == "Explorer")
{
appVer = navigator.userAgent;
s = appVer.indexOf("MSIE ",0) + 5;
e = appVer.indexOf(";",s);
version = eval(appVer.substring(s,e));
}
return version;
}


function setCSS(theURL)
{
var os = getOSType();
var browser = getBrowserName();
var version = getBrowserVersion();
var dirName = theURL;
if (os == "MacOS") dirName += "mac/";
if (os == "Windows") dirName += "win/";
if (browser == "Netscape") dirName += "nn";
if (browser == "Explorer") dirName += "ie";
	if ((version >= 3) && (version < 4.5))  dirName += "4.css";
	if ((version >= 4.5) && (version < 5))  dirName += "4.5.css";
	if ((version >= 5) && (version < 5.5))  dirName += "5.css";
	if ((version >= 5.5) && (version < 6))  dirName += "5.5.css";
	if ((version >= 6) && (version < 7))  dirName += "6.css";
	if ((version >= 7)&& (version < 8))    dirName += "7.css";
	if ((version >= 8)&& (version < 9))    dirName += "8.css";	// 2010/5/18
document.write("<LINK REL='stylesheet' type='text/css' HREF='"+dirName+"'>");
}