// ************************************************************************************************
// Ultimate client-side JavaScript client sniff. Version 3.03
// (C) Netscape Communications 1999.  Permission granted to reuse and distribute.
// Revised 17 May 99 to add is_nav5up and is_ie5up (see below).
// Revised 20 Dec 00 to add is_gecko and change is_nav5up to is_nav6up
//                      also added support for IE5.5 Opera4&5 HotJava3 AOLTV
// Revised 22 Feb 01 to correct Javascript Detection for IE 5.x, Opera 4,
//                      correct Opera 5 detection
//                      add support for winME and win2k
//                      synch with browser-type-oo.js
// Revised 26 Mar 01 to correct Opera detection
// Revised 02 Oct 01 to add IE6 detection

// Everything you always wanted to know about your JavaScript client
// but were afraid to ask. Creates "is_" variables indicating:
// (1) browser vendor:
//     is_nav, is_ie, is_opera, is_hotjava, is_webtv, is_TVNavigator, is_AOLTV
// (2) browser version number:
//     is_major (integer indicating major version number: 2, 3, 4 ...)
//     is_minor (float   indicating full  version number: 2.02, 3.01, 4.04 ...)
// (3) browser vendor AND major version number
//     is_nav2, is_nav3, is_nav4, is_nav4up, is_nav6, is_nav6up, is_gecko, is_ie3,
//     is_ie4, is_ie4up, is_ie5, is_ie5up, is_ie55, is_ie55up, is_ie6, is_ie6up, is_hotjava3, is_hotjava3up,
//     is_opera2, is_opera3, is_opera4, is_opera5, is_opera5up, is_aol3, is_aol4, is_aol5, is_aol6
//
// Note: you don't want your Nav4 or IE4 code to "turn off" or
// stop working when new versions of browsers are released, so
// in conditional code forks, use is_ie5up ("IE 5.0 or greater")
// is_opera5up ("Opera 5.0 or greater") instead of is_ie5 or is_opera5
// to check version in code which you want to work on future
// versions.

/* *********************************************************************************************
 * @method	: jsDetectBrowser()
 * @comment	: detect browser vendor and version
 * @modify	: Aleksandr Melnichuk, MatrX.PL SA, 2000-2001. All rights reserved.
 * ****************************************************************************************** */
function jsDetectBrowser()
{
    // convert all characters to lowercase to simplify testing
    var agt = navigator.userAgent.toLowerCase();

    // *** BROWSER VERSION ***
    // Note: On IE5, these return 4, so use this.ie5up to detect IE5.
    this.major = parseInt(navigator.appVersion);
    this.minor = parseFloat(navigator.appVersion);

    // Note: Opera and WebTV spoof Navigator.  We do strict client detection.
    // If you want to allow spoofing, take out the tests for opera and webtv.
    this.nav      = ( (agt.indexOf('mozilla') != -1) && (agt.indexOf('spoofer') == -1) &&
                      (agt.indexOf('compatible') == -1) && (agt.indexOf('opera') == -1) &&
                      (agt.indexOf('webtv') == -1) && (agt.indexOf('hotjava') == -1) );
    this.nav2     = ( this.nav && (this.major == 2) );
    this.nav3     = ( this.nav && (this.major == 3) );
    this.nav4     = ( this.nav && (this.major == 4) );
    this.nav4up   = ( this.nav && (this.major >= 4) );
    this.navonly  = ( this.nav && ((agt.indexOf(";nav") != -1) || (agt.indexOf("; nav") != -1)) );
    this.nav6     = ( this.nav && (this.major == 5) );
    this.nav6up   = ( this.nav && (this.major >= 5) );
    this.nav7     = ( this.nav && (agt.indexOf("netscape/7") != -1) );
    this.nav7up   = ( this.nav && (agt.indexOf("netscape/7.") != -1) );
    this.gecko    = ( agt.indexOf('gecko') != -1 );

    this.ie       = ( (agt.indexOf("msie") != -1) && (agt.indexOf("opera") == -1) );
    this.ie3      = ( this.ie && (this.major < 4) );
    this.ie4      = ( this.ie && (this.major == 4) && (agt.indexOf("msie 4") != -1) );
    this.ie4up    = ( this.ie && (this.major >= 4) );
    this.ie5      = ( this.ie && (this.major == 4) && (agt.indexOf("msie 5.0") != -1) );
    this.ie55     = ( this.ie && (this.major == 4) && (agt.indexOf("msie 5.5") != -1) );
    this.ie5up    = ( this.ie && !this.ie3 && !this.ie4 );
    this.ie55up   = ( this.ie && !this.ie3 && !this.ie4 && !this.ie5 );
    this.ie6      = ( this.ie && (this.major == 4) && (agt.indexOf("msie 6.") != -1) );
    this.ie6up    = ( this.ie && !this.ie3 && !this.ie4 && !this.ie5 && !this.ie55 );

    // KNOWN BUG: On AOL4, returns false if IE3 is embedded browser
    // or if this is the first browser window opened.  Thus the
    // variables this.aol, this.aol3, and this.aol4 aren't 100% reliable.
    this.aol      = ( agt.indexOf("aol") != -1 );
    this.aol3     = ( this.aol && this.ie3 );
    this.aol4     = ( this.aol && this.ie4 );
    this.aol5     = ( agt.indexOf("aol 5") != -1 );
    this.aol6     = ( agt.indexOf("aol 6") != -1 );

    this.opera    = ( agt.indexOf("opera") != -1 );
    this.opera2   = ( agt.indexOf("opera 2") != -1 || agt.indexOf("opera/2") != -1 );
    this.opera3   = ( agt.indexOf("opera 3") != -1 || agt.indexOf("opera/3") != -1 );
    this.opera4   = ( agt.indexOf("opera 4") != -1 || agt.indexOf("opera/4") != -1 );
    this.opera5   = ( agt.indexOf("opera 5") != -1 || agt.indexOf("opera/5") != -1 );
    this.opera6   = ( agt.indexOf("opera 6") != -1 || agt.indexOf("opera/6") != -1 );
    this.opera7   = ( agt.indexOf("opera 7") != -1 || agt.indexOf("opera/7") != -1 );
    this.opera7up = ( this.opera && !this.opera2 && !this.opera3 && !this.opera4 && !this.opera5 && !this.opera6 );

    this.webtv    = ( agt.indexOf("webtv") != -1 );

    this.TVNavigator = ( (agt.indexOf("navio") != -1) || (agt.indexOf("navio_aoltv") != -1) );
    this.AOLTV		 = this.TVNavigator;

    this.hotjava     = ( agt.indexOf("hotjava") != -1 );
    this.hotjava3    = ( this.hotjava && (this.major == 3) );
    this.hotjava3up  = ( this.hotjava && (this.major >= 3) );
}

/* *********************************************************************************************
 * determining browser OBJECT
 * ****************************************************************************************** */
var browser = new jsDetectBrowser();