function Back(){history.back();}

function isNetscape(){return (navigator.appName.toLowerCase().indexOf('netscape') >= 0) ? true : false;}

function getNetscapeVer()
{
	if(!isNetscape())return -1;
	var s = navigator.appVersion;
	return s.substring(0,1);
}

function isIE()
{
    var _info = navigator.userAgent;
    var _ie   = (_info.indexOf("MSIE") > 0 && _info.indexOf("Win") > 0 && _info.indexOf("Windows 3.1") < 0);
    return _ie;
}

function getIEVer()
{
	if(!isIE())return -1;
	var s = navigator.appVersion;
	var i   = s.indexOf("MSIE")+5;
	var sv = s.substring(i,i+3);
	return s.substring(i,i+3);
}

function isTripod()
{
	var s = ""+location;
	return (s.indexOf('tripod') >= 0) ? true : false;
}

function isMSN()
{
	var s = ""+location;
	return (s.indexOf('msn') >= 0) ? true : false;
}
//
function newFile(url)  {parent.location=url;}
function newDoc(url)   {parent.location='http://'+url;}
function getMSN()      {return "http://homepages.msn.com/WindowsWay/markokun/java";}
function getTripod()   {return 'mokun.tripod.com';}
function getHomePage() {return getTripod();}
//
function ToMyHomePage(u)
{
	if(u == null)newDoc(getHomePage());
	else         newFile(u);
}

function InsertCounter()
{
	if(isMSN())return;
	var s = 'This page was accessed '
	if(isTripod())s += '<IMG SRC="/bin/counter/index.html#AAAA4F">';
	else          s += '1';
	s += ' times since July 8, 2000<br>';
	document.write(s);
}

function InsertNedstatCounter()
{
	var s = '';
	if(isTripod()){
		s += '<!-- start of NedStat code -->';
		s += '<a href="http://nedstat.tripod.com/bin/viewstat?name=mokun-0">';
		s += '<img src="http://nedstat.tripod.com/bin/nedstat.gif?name=mokun-0" ';
		s += 'border=0 alt="Nedstat Counter" width=22 height=22></a>';
		s += '<!-- end of NedStat code -->';
		document.write(s);
	}
}

function getCurrDate()
{
	var now = new Date;
	var Year  = now.getFullYear();
	var Month = now.getMonth()+1;
	var Day   = now.getDate();
	var s = ""+ Day+"/"+Month+"/"+Year;
	return s;
}

function autoStartJavaApplet()
{
	return (parent.frames.length > 1) ? true : false;
}

function play(frm,page,pageP)
{
	if(!canUseJavaPlugin()){
		location='java/'+page;
	}
	else {
		location='java/'+pageP;
	}
}

function onLoadXoPage(u,clr)
{
	checkFrame("content.htm",u,"frameIndex","frameData","welcmxo.htm",getXoBackColor(),clr);
}

function onLoadNewPage()
{
	document.bgColor = "#FFFFFF"
}

function getDefaultJavaMinor() {return 3;}

function canUseJava(jdkMajor,jdkMinor)
{
	if(jdkMajor > 1)return false;
	if(isIE()){
		if(jdkMinor < 2)return true;
		return false;
	}
	if(isNetscape()){
		var vn = getNetscapeVer();
		if(vn <= 3)return false;
		if(vn == 4){
			var svn  = navigator.appVersion.substring(1,2);
			if(svn < 7)return false;
		}
		if(jdkMinor < 2)return true;
    		if(vn >= 6)return true;
		return false;
	}
	return false;
}

function canUseJavaPlugin()
{
	if(isIE())return true;
	if(isNetscape()){
    		var _info = navigator.userAgent;
                if(_info.indexOf("Sun") > 0)return true;
                if(_info.indexOf("Linux") > 0)return true;
    		if(_info.indexOf("Win")   > 0 && _info.indexOf("Win16") < 0){
			if(_info.indexOf("Netscape6") > 0)return true;
			if(java.lang.System.getProperty("os.version").indexOf("3.5") <  0)return false;
		}
		return true;
	}
	return false;
}
//
function setJdkCookie(iJdk){setCookie("JMO.JDK",""+iJdk);}
function getJdkCookie()    {return getCookie("JMO.JDK");}
//
function getXoBackColor() {return "#EBC79E";}
function getTitleXO() {return 'X and O';}