var agt = navigator.userAgent.toLowerCase();
var isIE = (navigator.appName == "Microsoft Internet Explorer") ? true : false;
var isIE5 = (isIE && agt.indexOf("msie 5.0") != -1) ? true : false;
var isIE55 = (isIE && agt.indexOf("msie 5.5") != -1) ? true : false;
var isIE6 = (isIE && agt.indexOf("msie 6") != -1) ? true : false;
var isNav6  = (navigator.appName == "Netscape" && parseInt(navigator.appVersion.charAt(0)) > 4) ? true : false;
var isNav4 = false;
var isDOM = (document.getElementById) ? true : false;
window.defaultStatus = "http://www.DolphinBayResort.com"
if(document.layers){
 isNav4 = true;
 alert("Support for Netscape Navigator 4 has been discontinued.");
 window.location.href="browser.htm";
}