var b_sys=0
var b_type=1
var b_vers=-1
var aol_type=0

var uAgent= navigator.userAgent.toLowerCase()

if (uAgent.indexOf("mac")!= -1){
	b_sys=1//Macintosh System
}
else{
	if ((uAgent.indexOf('mozilla') != -1) && (uAgent.indexOf('spoofer')== -1) && (uAgent.indexOf('compatible') == -1) && (uAgent.indexOf('opera') == -1)) {
		if ((uAgent.indexOf('rv:1.') != -1) && (uAgent.indexOf("netscape") == -1)) {
			b_type=3//Mozilla
		} 
		else {
			b_type=2//Navigator
		}
	}
	if ((uAgent.indexOf("msie") != -1) && (uAgent.indexOf("opera") == -1)){b_type=1}//InternetExplorer
	if (uAgent.indexOf("opera") != -1){b_type=4}
	if (uAgent.indexOf("america online") != -1){aol_type=1}
}