/*
 * $Log: ua.js,v $
 * Revision 1.9  2002/07/22 14:06:21  bc6ix
 * fix license path, change version reporting to use 2 digits for each level
 *
 * Revision 1.8  2002/07/07 08:23:07  bc6ix
 * fix line endings
 *
 * Revision 1.7  2002/05/14 16:52:52  bc6ix
 * use CVS Log for revision history
 *
 *
 */

/* ***** BEGIN LICENSE BLOCK *****
 * Licensed under Version: MPL 1.1/GPL 2.0/LGPL 2.1
 * Full Terms at http://bclary.com/lib/js/license/mpl-tri-license.txt
 *
 * Software distributed under the License is distributed on an "AS IS" basis,
 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
 * for the specific language governing rights and limitations under the
 * License.
 *
 * The Original Code is Netscape code.
 *
 * The Initial Developer of the Original Code is
 * Netscape Corporation.
 * Portions created by the Initial Developer are Copyright (C) 2001
 * the Initial Developer. All Rights Reserved.
 *
 * Contributor(s): Bob Clary <bclary@netscape.com>
 *
 * ***** END LICENSE BLOCK ***** */

function xbDetectBrowser()
{
	var oldOnError = window.onerror;
	var element = null;

	window.onerror = null;

	// work around bug in xpcdom Mozilla 0.9.1
	window.saveNavigator = window.navigator;

	navigator.OS = '';
	navigator.version = parseFloat(navigator.appVersion);
	navigator.org = '';
	navigator.family = '';

	var platform;
	if (typeof(window.navigator.platform) != 'undefined')
	{
		platform = window.navigator.platform.toLowerCase();
		if (platform.indexOf('win') != -1)
			navigator.OS = 'win';
		else if (platform.indexOf('mac') != -1)
			navigator.OS = 'mac';
		else if (platform.indexOf('unix') != -1 || platform.indexOf('linux') != -1 || platform.indexOf('sun') != -1)
			navigator.OS = 'nix';
	}

	var i = 0;
	var ua = window.navigator.userAgent.toLowerCase();

	if (ua.indexOf('safari') != -1)
	{
		i = ua.indexOf('safari');
		navigator.family = 'safari';
		navigator.org = 'safari';
		navigator.version = parseFloat('0' + ua.substr(i + 7), 10);
	}
	else if (ua.indexOf('opera') != -1)
	{
		i = ua.indexOf('opera');
		navigator.family = 'opera';
		navigator.org = 'opera';
		navigator.version = parseFloat('0' + ua.substr(i + 6), 10);
	}
	else if ((i = ua.indexOf('msie')) != -1)
	{
		navigator.org = 'microsoft';
		navigator.version = parseFloat('0' + ua.substr(i + 5), 10);

		if (navigator.version < 4)
			navigator.family = 'ie3';
		else
			navigator.family = 'ie4'
	}
	else if (ua.indexOf('gecko') != -1)
	{
		navigator.family = 'gecko';
		var rvStart = ua.indexOf('rv:');
		var rvEnd = ua.indexOf(')', rvStart);
		var rv = ua.substring(rvStart + 3, rvEnd);
		var rvParts = rv.split('.');
		var rvValue = 0;
		var exp = 1;

		for (var i = 0; i < rvParts.length; i++)
		{
			var val = parseInt(rvParts[i]);
			rvValue += val / exp;
			exp *= 100;
		}
		navigator.version = rvValue;

		if (ua.indexOf('netscape') != -1)
			navigator.org = 'netscape';
		else if (ua.indexOf('compuserve') != -1)
			navigator.org = 'compuserve';
		else
			navigator.org = 'mozilla';
	}
	else if ((ua.indexOf('mozilla') != -1) && (ua.indexOf('spoofer') == -1) && (ua.indexOf('compatible') == -1) && (ua.indexOf('opera') == -1) && (ua.indexOf('webtv') == -1) && (ua.indexOf('hotjava') == -1))
	{
		var is_major = parseFloat(navigator.appVersion);

		if (is_major < 4)
			navigator.version = is_major;
		else
		{
			i = ua.lastIndexOf('/')
			navigator.version = parseFloat('0' + ua.substr(i + 1), 10);
		}
		navigator.org = 'netscape';
		navigator.family = 'nn' + parseInt(navigator.appVersion);
	}
	else if ((i = ua.indexOf('aol')) != -1)
	{
		// aol
		navigator.family = 'aol';
		navigator.org = 'aol';
		navigator.version = parseFloat('0' + ua.substr(i + 4), 10);
	}
	else if ((i = ua.indexOf('hotjava')) != -1)
	{
		// hotjava
		navigator.family = 'hotjava';
		navigator.org = 'sun';
		navigator.version = parseFloat(navigator.appVersion);
	}

	window.onerror = oldOnError;
}

xbDetectBrowser();