// JavaScript Document

//browser sniffer functions

function isChrome()
{	
	if(isOpera())
		return false;
		
	return navigator.userAgent.indexOf('Chrome') != -1;
}
function isSafari()
{
	if(isOpera())
		return false;
		
	if(isChrome())
		return false;
		
	return navigator.userAgent.indexOf('Safari') != -1;
}
function isOpera()
{
	return typeof(window.opera) != "undefined";
}
function isGecko()
{
	if(isOpera())
		return false;
		
	if(isSafari())
		return false;
		
	if(isChrome())
		return false;
		
	return navigator.userAgent.indexOf('Gecko') != -1;
}
function isMicrosoft()
{
	if(isOpera())
		return false;
		
	return navigator.appName.indexOf('Microsoft') != -1;	
}

/*
alert("Chrome  " + isChrome());
alert("Gecko  " + isGecko());
alert("Safari  " + isSafari());
alert("Opera  " + isOpera());
alert("IE  " + isMicrosoft());
*/

var level1 = isChrome() || isSafari() || isOpera();
var level2 = isMicrosoft() || isGecko();
var isOkay = level1 || level2;