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;