/*
	DESCRIPTION
	browser and os class

	USAGE
	is.linux		os is linux
	is.win			os is windows
	win95			os is windows 95
	win98			os is windows 98
	winme			os is windows me
	win2k			os is windows 2000
	winnt			os is windows nt
	is.mac			os is macos
	is.msd			microsoft-dom1
	is.w3d			w3c-dom1
	is.version		browserversion (float)
	is.v			browserversion (int)
	is.ns			browser is netscape navigator 4 and higher
	is.ns4			browser is netscape navigator 4.*
	is.ns40			browser is netscape navigator 4.0
	is.ns45			browser is netscape navigator 4.5
	is.ns6			browser is netscape navigator 6
	is.ie			browser is ms internet explorer 4 and higher
	is.ie4			browser is ms internet explorer 4
	is.ie5			browser is ms internet explorer 5.*
	is.ie55			browser is ms internet explorer 5.5
	is.ie6			browser is ms internet explorer 6
	is.op			browser is opera 3 and higher
	is.op4			browser is opera 4.*
	is.op5			browser is opera 5.*
*/

function sniffer() {
	ua=navigator.userAgent.toLowerCase();
	this.linux = (ua.indexOf("linux")>0) ? true : false;
	this.win = (ua.indexOf("win")>0) ? true : false;
	this.win = (ua.indexOf("win")>0) ? true : false;
	this.win95 = ((ua.indexOf("win95")!=-1) || (ua.indexOf("windows 95")!=-1));
	this.win98 = ((ua.indexOf("win98")!=-1) || (ua.indexOf("windows 98")!=-1));
	this.winme = ((ua.indexOf("win 9x 4.90")!=-1));
	this.win2k = ((ua.indexOf("windows nt 5.0")!=-1));
	this.winnt = ((ua.indexOf("winnt")!=-1) || (ua.indexOf("windows nt")!=-1));
	this.mac = (ua.indexOf("mac")>0) ? true : false;
	this.msd = (document.all) ? true : false;
	this.w3d = (document.getElementById) ? true : false;
	b=navigator.appName;
	if (b=="Netscape") this.b="ns";
	else if ((b=="Opera") || (navigator.userAgent.indexOf("Opera")>0)) this.b = "op";
	else if (b=="Microsoft Internet Explorer") this.b="ie";
	//if (!b) alert('Unidentified browser./nThis browser is not supported,');
	this.version=navigator.appVersion;
	this.v=parseInt(this.version);
	this.v10=parseInt(parseFloat(this.version)*10);
	this.ns=(this.b=="ns" && this.v>=4) ? true : false;
	this.ns4=(this.b=="ns" && this.v==4) ? true : false;
	this.ns40=(this.b=="ns" && this.v10==40) ? true : false;
	this.ns45=(this.b=="ns" && this.v10==45) ? true : false;
	this.ns6=(this.b=="ns" && this.v==5) ? true : false;
	this.ie=(this.b=="ie" && this.v>=4) ? true : false;
	this.ie4=(this.version.indexOf('MSIE 4')>0 || (this.ie && this.mac)) ? true : false;
	this.ie45=(this.version.indexOf('MSIE 4.5')>0) ? true : false;
	this.ie5=(this.version.indexOf('MSIE 5')>0) ? true : false;
	this.ie55=(this.version.indexOf('MSIE 5.5')>0) ? true : false;
	this.ie6=(this.version.indexOf('MSIE 6')>0) ? true : false;
	this.op=(this.b=="op" && this.v>=3) ? true : false;
	this.op4=(this.b=="op" && this.v==4) ? true : false;
	this.op5=(this.b=="op" && this.v==5) ? true : false;
}
var is = new sniffer();