/* ========================================================================
   << OSの種類を確認する >>
======================================================================== */
function getOSType()
{
    var uAgent  = navigator.userAgent.toUpperCase();
    if ( uAgent.indexOf("MAC") >= 0 ) return "MacOS";
    if ( uAgent.indexOf("WIN") >= 0 ) return "Windows";
    if ( uAgent.indexOf("X11") >= 0 ) return "UNIX";
    return "";
}
/* ========================================================================
   << ブラウザタイプを確認する >>
======================================================================== */
function getBrowserName()
{
    var aName  = navigator.appName.toUpperCase();
    var uName  = navigator.userAgent.toUpperCase();
    if ( uName.indexOf("SAFARI") >= 0 )    return "Safari";
    if ( uName.indexOf("OPERA") >= 0 )     return "Opera";
    if ( aName.indexOf("NETSCAPE") >= 0 )  return "Netscape";
    if ( aName.indexOf("MICROSOFT") >= 0 ) return "Explorer";
    return "";
}
/* ========================================================================
   << ブラウザのバージョンを確認する >>
======================================================================== */
function getBrowserVersion()
{
	var browser = getBrowserName();
	var version = 0;
	var s 		= 0;
	var e 		= 0;
	var infVer	= navigator.userAgent;
	var appVer  = navigator.appVersion;
	var uName   = navigator.userAgent.toUpperCase();
	if ( browser == "Safari" )
	{
		version = eval( appVer.substring( 0,3 ) ) - 4;
	}
	if ( browser == "Opera" )
	{
		s 		= uName.indexOf( "OPERA ",0 ) + 6;
		e 		= uName.indexOf( " ", s );
		version = eval( uName.substring( s, e ) );
	}
	if ( browser == "Netscape" )
	{
		if ( infVer.match(/Mozilla\/(4\.[5678]\d?)/) ) {
			version = 4 		// NN4.xの処理
		} else if ( infVer.match(/Netscape6\/(\d\.\d(\.\d)?)/) ) {
			version = 6			// NN6の処理
		} else if ( infVer.match(/Netscape\/(7[\.\d]+)/) ) {
			version = 7			// NN7の処理
		} else {
			version = "unknown"
		}
	}
	if ( browser == "Explorer" )
	{
		appVer  = navigator.userAgent;
		s 		= appVer.indexOf( "MSIE ",0 ) + 5;
		e 		= appVer.indexOf( ";", s );
		version = eval( appVer.substring( s, e ) );
	}
	return version;
}