loaded = false;
MAC = navigator.userAgent.indexOf('Mac') != -1;
NN = navigator.appName.indexOf('Netscape') != -1;
IE = navigator.appName.indexOf('Microsoft') != -1;
IE4 = IE && navigator.appVersion.substring(4).indexOf('4.0') > -1;
VER = navigator.appVersion.charAt(0);
IC = NN && VER >= 3 || IE && VER >= 4;