/* Copyright Mike Litzkow - 1998, 1999 */

/*
We deal with 3 classes of browsers:
	Internet Explorer 3.x
	Internet Explorer 4.0 and above
	Netscape Navigator 4.0 and above
*/

var UnsupportedBrowser = -1;
var IE3 = 1;
var IE4up = 2;
var Nav4up = 3;

var browser = UnsupportedBrowser;

var agt=navigator.userAgent.toLowerCase();
var majorVer = parseInt(navigator.appVersion);

if( (agt.indexOf('mozilla') != -1) &&
					(agt.indexOf('spoofer') == -1) &&
					(agt.indexOf('compatible') == -1) ) {
	if( majorVer >= 4 ) {
		browser = Nav4up;
	}
}

if( agt.indexOf("msie") != -1) {
	if( majorVer == 3 ) {
		browser = IE3;
	} else if( majorVer >= 4 ) {
		browser = IE4up;
	}
}