function isIE() {
	return (navigator.userAgent && navigator.userAgent.indexOf("MSIE")>=0);
}

function isNS() {
	return (navigator.userAgent && (navigator.userAgent.indexOf("Netscape")>=0 || navigator.userAgent.indexOf("Gecko")>=0));
}

function agentVer() {
	return parseInt(navigator.appVersion);
}

function isIE4Compatible() {
	return (isIE() && agentVer()>=4);
}

function isIE5Compatible() {
	return (isIE() && agentVer()>=5);
}

function isIE55Compatible() {
	return (isIE() && agentVer()>=5.5);
}

function isIE6Compatible() {
	return (isIE() && agentVer()>=6);
}

function isNS4() {
	return (isNS() && agentVer()==4);
}

function isNS6Compatible() {
	return (isNS() && agentVer()>=5);
}

function isNS7Compatible() {
	return (isNS() && agentVer()>=5);
}

function isWindows() {
	return (navigator.userAgent.indexOf("Windows")>=0);
}

function isWindows9x() {
	return (navigator.userAgent.indexOf("Windows 9")>=0);
}

function isWindowsNT() {
	return navigator.userAgent.indexOf("Windows NT");
}

function isMac() {
	return (navigator.userAgent && navigator.userAgent.indexOf("Mac")>=0);
}

function isLinux() {
	return (navigator.userAgent && navigator.userAgent.indexOf("Linux")>=0);
}

function flashEnabled() {
	if (navigator.mimeTypes && navigator.mimeTypes["application/x-shockwave-flash"] && navigator.mimeTypes["application/x-shockwave-flash"].enabledPlugin)
		return (navigator.plugins && navigator.plugins["Shockwave Flash"]);
	return false;
}

function getObj(id) {
	var o;
	if (document.getElementById) o=document.getElementById(id);
	else o=eval(id);
	return o;
}

function isProperBrowser() {
	return isIE4Compatible() || isNS6Compatible();
}

function userStartup() {
	if (!isProperBrowser()) alert("This website is ONLY optimized for Internet Explorer 4.x/5.x/6.x and Netscape/Gecko 6.x/7.x");
}