var brw = navigator.appName;
//alert(brw);
var ver = parseInt(navigator.appVersion);
//alert(ver);
NS4 = ( brw == "Netscape" && ver >= 4 ) ? 1 : 0;
NS6 = ( brw == "Netscape" && ver == 6 ) ? 1 : 0;
IE4 = ( brw == "Microsoft Internet Explore" && ver == 4 ) ? 1 : 0; // IE & Opera 5+
IE5 = ( brw == "Microsoft Internet Explore" && ver == 5 ) ? 1 : 0;
ver4 = ( NS4 || IE4 || NS6 || IE5 ) ? 1 : 0;
isMac = ( navigator.appVersion.indexOf("Mac") != -1 ) ? 1 : 0;
isDynamyc = ( NS4 || (IE4 && !isMac) || NS6 || IE5 ) ? 1 : 0;