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

var uAgent= navigator.userAgent.toLowerCase()

if (uAgent.indexOf("mac")!= -1){b_sys=1}//Macintosh System
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}