function validateSubscribeForm(thisF) {
	var bOut = true;
	bOut = checkMe(thisF,'title, Title, firstName, First Name, lastname, Last Name, country, Country');
	if (bOut) {
		bOut2 = checkEmail(thisF,'email, E-mail')
	}
	return bOut && bOut2
}

// 9.6.2003 Jan Pokorny
function checkMe(tf,pars)
{
	pole=pars.split(',');
	for(i=0;i<pole.length;i+=2)
	{
		if(eval('typeof  tf.'+pole[i])!='undefined'){
			if(eval('tf.'+pole[i]+'.value')=='')
			{
				alert(pole[(i+1)]+' is required.');
				eval('tf.'+pole[i]+'.focus()');
				return false;
			}
		}
	}
	return true;
}

// 18.6.2004 Lukas Nemec
function checkEmail(tf,pars)
{
	var strEmail
	pole=pars.split(',');
	for(i=0;i<pole.length;i+=2)
	{
		strEmail = eval('tf.'+pole[i]+'.value')
		if(strEmail=='')
		{
			alert(pole[(i+1)]+' is required.');
			return (false);
		}
		
		if(strEmail.length != 0)
		{
			sta = 0
			for (i = 0; i < strEmail.length; i++)
			{                       
				if (strEmail.substring(i, i+1) == '.'  && sta == 1)
				{
					sta++;
				}
				if (strEmail.substring(i, i+1) == '@')
				{
					sta++;
				}
			}
		}
		if (sta != 2)
		{
	    	alert('Please insert correct e-mail.');
	    	return (false);
		}
	}
	return true;
}


// 18.6.2004 Lukas Nemec
// Declaring valid date character, minimum year and maximum year
var dtCh= ".";
var minYear=1900;
var maxYear=2100;

function isInteger(s){
	var i;
    for (i = 0; i < s.length; i++){   
        // Check that current character is number.
        var c = s.charAt(i);
        if (((c < "0") || (c > "9"))) return false;
    }
    // All characters are numbers.
    return true;
}

// 18.6.2004 Lukas Nemec
function stripCharsInBag(s, bag){
	var i;
    var returnString = "";
    // Search through string's characters one by one.
    // If character is not in bag, append to returnString.
    for (i = 0; i < s.length; i++){   
        var c = s.charAt(i);
        if (bag.indexOf(c) == -1) returnString += c;
    }
    return returnString;
}

// 18.6.2004 Lukas Nemec
function daysInFebruary (year){
	// February has 29 days in any year evenly divisible by four,
    // EXCEPT for centurial years which are not also divisible by 400.
    return (((year % 4 == 0) && ( (!(year % 100 == 0)) || (year % 400 == 0))) ? 29 : 28 );
}
// 18.6.2004 Lukas Nemec
function DaysArray(n) {
	for (var i = 1; i <= n; i++) {
		this[i] = 31
		if (i==4 || i==6 || i==9 || i==11) {this[i] = 30}
		if (i==2) {this[i] = 29}
   } 
   return this
}
// 18.6.2004 Lukas Nemec
function isDate(dtStr){
	var daysInMonth = DaysArray(12)
	var pos1=dtStr.indexOf(dtCh)
	var pos2=dtStr.indexOf(dtCh,pos1+1)
	var strDay=dtStr.substring(0,pos1)
	var strMonth=dtStr.substring(pos1+1,pos2)
	var strYear=dtStr.substring(pos2+1)
	strYr=strYear
	if (strDay.charAt(0)=="0" && strDay.length>1) strDay=strDay.substring(1)
	if (strMonth.charAt(0)=="0" && strMonth.length>1) strMonth=strMonth.substring(1)
	for (var i = 1; i <= 3; i++) {
		if (strYr.charAt(0)=="0" && strYr.length>1) strYr=strYr.substring(1)
	}
	day=parseInt(strDay)
	month=parseInt(strMonth)
	year=parseInt(strYr)
	if (pos1==-1 || pos2==-1){
		alert("Formát datumu musí byt v teto formě : dd.mm.rrrr")
		return false
	}
	if (strDay.length<1 || day<1 || day>31 || (month==2 && day>daysInFebruary(year)) || day > daysInMonth[month]){
		alert("Prosím zadejte platný den")
		return false
	}
	if (strMonth.length<1 || month<1 || month>12){
		alert("Prosím zadejte platný měsíc")
		return false
	}
	
	if (strYear.length != 4 || year==0 || year<minYear || year>maxYear){
		alert("Prosím zadejte správný 4 místný rok, mezi léty "+minYear+" a "+maxYear)
		return false
	}
	if (dtStr.indexOf(dtCh,pos2+1)!=-1 || isInteger(stripCharsInBag(dtStr, dtCh))==false){
		alert("Prosím vložte správné datum (cele)")
		return false
	}
return true
}
// 18.6.2004 Lukas Nemec
function checkDate(tf,pars)
{
	pole=pars.split(',');
	for(i=0;i<pole.length;i+=2)
	{
		if (isDate(eval('tf.'+pole[i]+'.value'))==false){
			eval('tf.'+pole[i]+'.focus()');
			return false;
		}
	}
	return true;
}