var plWINDOWS = 1;
var plMac= 2;
var plUnix = 4;

var appIE = 256;
var appNetscape = 512;

var BrowserType = 0;

var Plateform = navigator.appVersion; 
if (Plateform.match("Windows")) {
	BrowserType = plWINDOWS;
} else if (Plateform.match("Mac")) { 
	BrowserType = plMac;
} else if (Plateform.match("Unix")) { 
	BrowserType = plUnix;
}

var AppType = navigator.appName; 
if (AppType.match("Microsoft Internet Explore")) {
	BrowserType = BrowserType | appIE;
} else if (AppType.match("Netscape")){
	BrowserType = BrowserType | appNetscape;
}