function isEmailAddr(email)
{
  var result = false;
  var theStr = new String(email);
  var index = theStr.indexOf("@");
  if (index > 0)
  {
    var pindex = theStr.indexOf(".",index);
    if ((pindex > index+1) && (theStr.length > pindex+1))
	result = true;
  }
  return result;
}

function validRequired(formField,fieldLabel)
{
	var result = true;
	
	if (formField.value == "")
	{
		alert('Prosím vyplňte pole "' + fieldLabel +'".');
		formField.focus();
		result = false;
	}
	
	return result;
}

function allDigits(str)
{
	return inValidCharSet(str,"0123456789");
}

function allTelChars(str)
{
	return inValidCharSet(str,"0123456789-/() ");
}

function inValidCharSet(str,charset)
{
	var result = true;

	// Note: doesn't use regular expressions to avoid early Mac browser bugs	
	for (var i=0;i<str.length;i++)
		if (charset.indexOf(str.substr(i,1))<0)
		{
			result = false;
			break;
		}
	
	return result;
}

function validEmail(formField,fieldLabel,required)
{
	var result = true;
	
	if (required && !validRequired(formField,fieldLabel))
		result = false;

	if (result && ((formField.value.length < 3) || !isEmailAddr(formField.value)) )
	{
		alert("Prosím zadajte emailovú adresu v tvare: meno@domena.sk");
		formField.focus();
		result = false;
	}
   
  return result;

}

function validNum(formField,fieldLabel,required)
{
	var result = true;

	if (required && !validRequired(formField,fieldLabel))
		result = false;
  
 	if (result)
 	{
 		if (!allDigits(formField.value))
 		{
 			alert('Prosím zadajte číslo pre pole "' + fieldLabel +'".');
			formField.focus();		
			result = false;
		}
	} 
	
	return result;
}


function validTelNum(formField,fieldLabel,required)
{
	var result = true;

	if (required && !validRequired(formField,fieldLabel))
		result = false;
  
 	if (result)
 	{
 		if (!allTelChars(formField.value))
 		{
 			alert('Prosím zadajte telefónne číslo pre pole "' + fieldLabel +'".');
			formField.focus();		
			result = false;
		}
	} 
	
	return result;
}


function validInt(formField,fieldLabel,required)
{
	var result = true;

	if (required && !validRequired(formField,fieldLabel))
		result = false;
  
 	if (result)
 	{
 		var num = parseInt(formField.value,10);
 		if (isNaN(num))
 		{
 			alert('Prosím zadajte číslo pre pole "' + fieldLabel +'".');
			formField.focus();		
			result = false;
		}
	} 
	
	return result;
}




function validateForm(theForm)
{
	// Customize these calls for your form

	// Start ------->
	if (!validRequired(theForm.meno,"Meno"))
		return false;

        if (!validRequired(theForm.ulica,"Ulica"))
		return false;

        if (!validRequired(theForm.mesto,"Mesto"))
		return false;

        if (!validRequired(theForm.psc,"PSČ", true))
		return false;

        if (!validEmail(theForm.email,"Email",true))
		return false;
        
        if (!validTelNum(theForm.telefon,"Telefón",true))
		return false;

        if (!validNum(theForm.Veda_o_bohatstve,"Veda o bohatstve",false))
		return false;

        if (!validNum(theForm.Spiaci_zobud_sa_AT1,"Atlantské tajomstvá I",false))
		return false;

	if (!validNum(theForm.Navzdy_Laska_AT2,"Atlantské tajomstvá II",false))
		return false;

	if (!validNum(theForm.Bohovia_su_mudri_AT3,"Atlantské tajomstvá III",false))
		return false;

	
	if (!validNum(theForm.Navrat_Lietajuceho_Draka_AT4,"Atlantské tajomstvá IV",false))
		return false;


        
        



	// <--------- End
	
	return true;
}