function rtx_browserInfoClass() {
	var agt = navigator.userAgent.toLowerCase();

	this.osver = 1.0;

	if (agt)
	{
		var stOSVer = agt.substring(agt.indexOf("windows ") + 11);
		this.osver = parseFloat(stOSVer);
	}

	this.major = parseInt(navigator.appVersion);
	this.nav = ((agt.indexOf('mozilla') != -1)
		&& ((agt.indexOf('spoofer') == -1)
		&& (agt.indexOf('compatible') == -1)));
	this.nav2 = (this.nav && (this.major == 2));
	this.nav3 = (this.nav && (this.major == 3));
	this.nav4 = (this.nav && (this.major == 4));
	this.nav6 = this.nav && (this.major == 5);
	this.nav6up = this.nav && (this.major >= 5);
	this.nav7up = false;

	if(this.nav6up)
	{
		var navIdx = agt.indexOf("netscape/");
		if(navIdx >=0)
		{
			this.nav7up = parseInt(agt.substring(navIdx+9)) >= 7;
		}
	}

	this.ie = (agt.indexOf("msie")!=-1);
	this.aol = this.ie && agt.indexOf(" aol ")!=-1;
	if (this.ie)
	{
		var stIEVer = agt.substring(agt.indexOf("msie ") + 5);
		this.iever = parseInt(stIEVer);
		this.verIEFull = parseFloat(stIEVer);
	}
	else
	{
		this.iever = 0;
	}
	
	this.ie3 = ( this.ie && (this.major == 2));
	this.ie4 = ( this.ie && (this.major == 4));
	this.ie4up = this.ie && (this.major >= 4);
	this.ie5up = this.ie && (this.iever >= 5);
	this.ie55up = this.ie && (this.verIEFull >= 5.5);
	this.ie6up = this.ie && (this.iever >= 6);
	this.win16 = ((agt.indexOf("win16") != -1)
		|| (agt.indexOf("16bit") != -1)
		|| (agt.indexOf("windows 3.1") != -1)
		|| (agt.indexOf("windows 16-bit") != -1));
	this.win31 = (agt.indexOf("windows 3.1") != -1)
		|| (agt.indexOf("win16") != -1)
		|| (agt.indexOf("windows 16-bit")!=-1);
	this.win98 = ((agt.indexOf("win98") != -1) || (agt.indexOf("windows 98") != -1));
	this.win95 = ((agt.indexOf("win95") != -1) || (agt.indexOf("windows 95") != -1));
	this.winnt = ((agt.indexOf("winnt") != -1) || (agt.indexOf("windows nt") != -1));
	this.win32 = this.win95
		|| this.winnt
		|| this.win98
		|| ((this.major >= 4) && (navigator.platform == "Win32"))
		|| (agt.indexOf("win32") != -1)
		|| (agt.indexOf("32bit") != -1);
	this.os2 = (agt.indexOf("os/2")!=-1) 
		|| (navigator.appVersion.indexOf("OS/2") != -1)  
		|| (agt.indexOf("ibm-webexplorer") != -1);
	this.mac = (agt.indexOf("mac") != -1);
	this.mac68k = this.mac && ((agt.indexOf("68k") != -1)
		|| (agt.indexOf("68000") != -1));
	this.macppc = this.mac
		&& ((agt.indexOf("ppc") != -1) || (agt.indexOf("powerpc") != -1));
	this.w3c = this.nav6up;
}
var rtx_browserInfo = new rtx_browserInfoClass();