function printPage()
{
   var options = "menubar=yes,toolbar=yes,scrollbars=yes,resizable=yes,width=630,height=460;"
   url = top.location.href;
   if (url.indexOf("#")>0) url = url.substring(0, url.indexOf("#")-1);
   if (url.indexOf("?")>0) url = url + "&print=yes";
   else url = url + "?print";
   printWindow=window.open(url,"_blank",options);
}

function printPageEn()
{
   var options = "menubar=yes,toolbar=yes,scrollbars=yes,resizable=yes,width=630,height=460;"
   url = top.location.href;
   if (url.indexOf("#")>0) url = url.substring(0, url.indexOf("#")-1);
   if (url.indexOf("?")>0) url = url + "&print=yes&eng=yes";
   else url = url + "?print=yes&eng=yes";
   printWindow=window.open(url,"_blank",options);
}

function popup(url, width, height)
{
      var options = "toolbar=no,scrollbars=yes,resizable=yes,width="+width+",height="+height+";"
      popupWindow=window.open(url,"_blank",options);
}

function wjPopup(url, width, height)
{
      var options = "toolbar=no,scrollbars=yes,resizable=yes,width="+width+",height="+height+";"
      popupWindow=window.open(url,"_blank",options);
}

function popupNoScroll(url, width, height)
{
      var options = "toolbar=no,scrollbars=no,resizable=no,width="+width+",height="+height+";"
      popupWindow=window.open(url,"_blank",options);
}

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 zadajte hodnotu do políčka: ' + fieldLabel);
      formField.focus();
      result = false;
   }
   
   return result;
}

function allDigits(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 kompletnú emailovú adresu vo formáte: 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 do políčka: ' + 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 do políčka: ' + fieldLabel);
         formField.focus();      
         result = false;
      }
   } 
   
   return result;
}


function validDate(formField,fieldLabel,required)
{
   var result = true;

   if (required && !validRequired(formField,fieldLabel))
      result = false;
  
   if (result)
   {
      var elems = formField.value.split(".");
      
      result = (elems.length == 3); // should be three components
      
      if (result)
      {
         var month = parseInt(elems[1],10);
         var day = parseInt(elems[0],10);
         var year = parseInt(elems[2],10);
         result = allDigits(elems[0]) && (month > 0) && (month < 13) &&
                allDigits(elems[1]) && (day > 0) && (day < 32) &&
                allDigits(elems[2]) && ((elems[2].length == 2) || (elems[2].length == 4));
      }
      
      if (!result)
      {
         alert('Prosím zadajte dátum vo formáte DD.MM.RRRR do políčka: ' + fieldLabel);
         formField.focus();      
      }
   } 
   
   return result;
}
