var Mac = navigator.appVersion.indexOf('Mac',0) != -1;
var Win = navigator.appVersion.indexOf('Win',0) != -1;
var NN = navigator.appName.indexOf("Netscape",0) != -1;
var IE = navigator.appName.indexOf("Microsoft Internet Explorer",0) != -1;
var IE45Mac = navigator.appVersion.indexOf('MSIE 4.5',0) != -1 && navigator.appVersion.indexOf('Mac',0) != -1
var VER = navigator.appVersion.charAt(0); if(navigator.appVersion.indexOf('MSIE 5.0',0) != -1){VER++;}
var Moz = navigator.userAgent.indexOf("Gecko") != -1;
var IE5Mac = ((Mac && navigator.appVersion.indexOf('MSIE 5',0) != -1) ||
(Mac && IE && VER == 5));
var MIE4 = (Mac && IE && VER > 4);
var IEWin = (Win && IE);
var IE5Win = ((Win && navigator.appVersion.indexOf('MSIE 5',0) != -1) ||
(Mac && IE && VER == 5));