var vNum = navigator.appVersion.charAt(0);
var bName = navigator.appName.charAt(0);

if(navigator.appVersion.indexOf("Mac") > -1)
{
	var MacOsVer = 9;
	for (i=0; i<navigator.plugins.length; i++) if (navigator.plugins[i].filename.indexOf(".plugin") >= 0) MacOsVer = 10;
	if (MacOsVer == 10)
	{
		if( bName == "M")
		{
			// Macintosh IE MacOS X
			document.write('<link rel="stylesheet" type="text/css" href="css/osx.css">');
		}
		else if(navigator.userAgent.indexOf('AppleWebKit') != -1)
		{
			// Macintosh Safari
			document.write('<link rel="stylesheet" type="text/css" href="css/safari.css">');
		}
		else if( bName == "N")
		{
			// Macintosh Netscape 6.x~ MacOS X
			document.write('<link rel="stylesheet" type="text/css" href="css/mac_nn6.css">');
			}
	}
	else
	{
		if( bName == "M")
		{
			// Macintosh IE MacOS 9
			document.write('<link rel="stylesheet" type="text/css" href="css/os9_ie.css">');
		}
		else
		{
			if( vNum < 5 )
			{
			// Macintosh Netscape 4.x MacOS 9
			document.write('<link rel="stylesheet" type="text/css" href="css/mac_nn4.css">');
			}
			else if( bName == "N")
			{
			// Macintosh Netscape 6.x~ MacOS 9
			document.write('<link rel="stylesheet" type="text/css" href="css/mac_nn6.css">');
			}
		}
	}
}
else
{
	if( bName == "M")
	{
		// Windows IE
			document.write('<link rel="stylesheet" type="text/css" href="css/win_ie.css">');
	}
	else
	{
		if( vNum < 5 )
		{
			// Windows Netscape 4.
			document.write('<link rel="stylesheet" type="text/css" href="css/win_nn4.css">');
		}
		else if( bName == "N")
		{
			// Windows Netscape 6.x~
			document.write('<link rel="stylesheet" type="text/css" href="css/win_nn6.css">');
		}
	}
}