//WYSZUKIWARKA - czyszczenie pola
function clickclear(thisfield, defaulttext) 
{
  if (thisfield.value == defaulttext)  
  {
    thisfield.value = "";
  }
}

//WYSZUKIWARKA - przywracanie napisu

function clickrecall(thisfield, defaulttext) 
{
  if (thisfield.value == "") 
  {
    thisfield.value = defaulttext;
  }
}

//KALENDARZ

function displayDatePicker(dateFieldName, displayBelowThisObject, dtFormat, dtSep)
{
  var targetDateField = document.getElementsByName (dateFieldName).item(0);
 
   if (!displayBelowThisObject)
    displayBelowThisObject = targetDateField;
 
   if (dtSep)
    dateSeparator = dtSep;
  else
    dateSeparator = defaultDateSeparator;
 
   if (dtFormat)
    dateFormat = dtFormat;
  else
    dateFormat = defaultDateFormat;
 
  var x = displayBelowThisObject.offsetLeft;
  var y = displayBelowThisObject.offsetTop + displayBelowThisObject.offsetHeight ;
 
  var parent = displayBelowThisObject;
  while (parent.offsetParent) {
    parent = parent.offsetParent;
    x += parent.offsetLeft;
    y += parent.offsetTop ;
  }
 

  var dt = getFieldDate(targetDateField.value );
 
  
  if (!document.getElementById(datePickerDivID)) {
   
    var newNode = document.createElement("div");
    newNode.setAttribute("id", datePickerDivID);
    newNode.setAttribute("class", "dpDiv");
    newNode.setAttribute("style", "visibility: hidden;");
    document.body.appendChild(newNode);
  }
 
  var pickerDiv = document.getElementById(datePickerDivID);
  pickerDiv.style.position = "absolute";
  pickerDiv.style.left = x + "px";
  pickerDiv.style.top = y + "px";
  pickerDiv.style.visibility = (pickerDiv.style.visibility == "visible" ? "hidden" : "visible");
  pickerDiv.style.display = (pickerDiv.style.display == "block" ? "none" : "block");
  pickerDiv.style.zIndex = 10000;
 
  refreshDatePicker(targetDateField.name, dt.getFullYear(), dt.getMonth(), dt.getDate());
}

 function refreshDatePicker(dateFieldName, year, month, day)
{

  var thisDay = new Date();
 
  if ((month >= 0) && (year > 0)) {
    thisDay = new Date(year, month, 1);
  } else {
    day = thisDay.getDate();
    thisDay.setDate(1);
  }

  var html = "<table cols=7 class='dpTable'>";
  html += "<tr class='dpTitleTR'>";
  html += "<td class='dpButtonTD'>" + getButtonCode(dateFieldName, thisDay, -1, "&lt;") + "</td>";
  html += "<td colspan=5 class='dpTitleTD'><div class='dpTitleText'>" + monthArrayLong[ thisDay.getMonth()] + " " + thisDay.getFullYear() + "</div>" + "</td>";
  html += "<td class='dpButtonTD'>" + getButtonCode(dateFieldName, thisDay, 1, "&gt;") + "</td>";
  html += "</tr>";
 
  
  html += "<tr class='dpDayTR'>";
  for(i = 0; i < dayArrayShort.length; i++)
    html += "<td class='dpDayTD'>" + dayArrayShort[i] + "</td>";
  html += "</tr>";
 
  html += "<tr class='dpTR'>";
 
  for (i = 0; i < thisDay.getDay(); i++)
    html +="<td class='dpTD' onMouseOut='this.className=\"dpTD\";' onMouseOver=' this.className=\"dpTDHover\";' " + "&nbsp;" + "</td>";
 
  do {
    dayNum = thisDay.getDate();
    
    if (dayNum == day)
      html += "<td class='dpDayHighlightTD' onMouseOut='this.className=\"dpDayHighlightTD\";' onMouseOver='this.className=\"dpTDHover\";' " + " onclick=\"updateDateField('" + dateFieldName + "', '" + getDateString(thisDay) + "');\">" + "<div class='dpDayHighlight'>" + dayNum + "</div>" + "</td>" + "\r\n";
    else
      html +="<td class='dpTD' onMouseOut='this.className=\"dpTD\";' onMouseOver=' this.className=\"dpTDHover\";' " + " onclick=\"updateDateField('" + dateFieldName + "', '" + getDateString(thisDay) + "');\">" + dayNum + "</td>" + "\r\n";
    
    // jeżeli sobota - nowy wiersz
    if (thisDay.getDay() == 6)
      html += "</tr>" + "\r\n" + "<tr class='dpTR'>";
    
    // inkrementacja dnia
    thisDay.setDate(thisDay.getDate() + 1);
  } while (thisDay.getDate() > 1)
 
  // fill in any trailing blanks ?????
  if (thisDay.getDay() > 0) {
    for (i = 6; i > thisDay.getDay(); i--)
      html +="<td class='dpTD' onMouseOut='this.className=\"dpTD\";' onMouseOver=' this.className=\"dpTDHover\";' " + "&nbsp;" + "</td>" + "\r\n";
  }
  html += "</tr>" + "\r\n";
 
  // add a button to allow the user to easily return to today, or close the calendar
//  var today = new Date();
//  var todayString = "Today is " + dayArrayMed[today.getDay()] + ", " + monthArrayMed[ today.getMonth()] + " " + today.getDate();
//  html += "<tr class='dpTodayButtonTR'>" + "<td colspan=7 class='dpTodayButtonTD'>";

//  html += "</td>" + "\r\n" + "</tr>" + "\r\n";
 
  html += "</table>" + "\r\n";
 
  document.getElementById(datePickerDivID).innerHTML = html;
  adjustiFrame();
}


//obsługa przycisków następny i poprzedni msc
function getButtonCode(dateFieldName, dateVal, adjust, label)
{
  var newMonth = (dateVal.getMonth () + adjust) % 12;
  var newYear = dateVal.getFullYear() + parseInt((dateVal.getMonth() + adjust) / 12);
  if (newMonth < 0) {
    newMonth += 12;
    newYear += -1;
  }
 
  return "<button class='dpButton' onClick='refreshDatePicker(\"" + dateFieldName + "\", " + newYear + ", " + newMonth + ");'>" + label + "</button>";
}

//konwersja JavaScript Date do stringu
function getDateString(dateVal)
{
  var dayString = "00" + dateVal.getDate();
  var monthString = "00" + (dateVal.getMonth()+1);
  dayString = dayString.substring(dayString.length - 2);
  monthString = monthString.substring(monthString.length - 2);
 
  return dateVal.getFullYear() + "-" + monthString + "-" + dayString;
}


//konwersja stringu do JavaScript Date
function getFieldDate(dateString)
{
  var dateVal;
  var dArray;
  var d, m, y;
 
  try {
    dArray = splitDateString(dateString);
    if (dArray) {
          d = parseInt(dArray[2], 10);
          m = parseInt(dArray[1], 10) - 1;
          y = parseInt(dArray[0], 10);
   
      dateVal = new Date(y, m, d);
    } else if (dateString) {
      dateVal = new Date(dateString);
    } else {
      dateVal = new Date();
    }
  } catch(e) {
    dateVal = new Date();
  }
return dateVal;
}


//Wyłuskuje ze stringu dzień mscrok używając znanych separatorów. Zwraca array-a lub false jeżeli nie udało się wyłuskać.
function splitDateString(dateString)
{
  var dArray;
  if (dateString.indexOf("/") >= 0)
    dArray = dateString.split("/");
  else if (dateString.indexOf(".") >= 0)
    dArray = dateString.split(".");
  else if (dateString.indexOf("-") >= 0)
    dArray = dateString.split("-");
  else if (dateString.indexOf("\\") >= 0)
    dArray = dateString.split("\\");
  else
    dArray = false;
 
  return dArray;
}


// jeżeli znika spróbować funkcję wyzerować ???????
function updateDateField(dateFieldName, dateString)
{
  var targetDateField = document.getElementsByName (dateFieldName).item(0);
  if (dateString)
    targetDateField.value = dateString;
 
  var pickerDiv = document.getElementById(datePickerDivID);
  pickerDiv.style.visibility = "hidden";
  pickerDiv.style.display = "none";
 
  adjustiFrame();
  targetDateField.focus();
 
  if ((dateString) && (typeof(datePickerClosed) == "function"))
    datePickerClosed(targetDateField);
}


function adjustiFrame(pickerDiv, iFrameDiv)
{
  
  var is_opera = (navigator.userAgent.toLowerCase().indexOf("opera") != -1);
  if (is_opera)
    return;
  
  // put a try/catch block around the whole thing, just in case
  try {
    if (!document.getElementById(iFrameDivID)) {
      // don't use innerHTML to update the body, because it can cause global variables
      // that are currently pointing to objects on the page to have bad references
      //document.body.innerHTML += "<iframe id='" + iFrameDivID + "' src='javascript:false;' scrolling='no' frameborder='0'>";
      var newNode = document.createElement("iFrame");
      newNode.setAttribute("id", iFrameDivID);
      newNode.setAttribute("src", "javascript:false;");
      newNode.setAttribute("scrolling", "no");
      newNode.setAttribute ("frameborder", "0");
      document.body.appendChild(newNode);
    }
    
    if (!pickerDiv)
      pickerDiv = document.getElementById(datePickerDivID);
    if (!iFrameDiv)
      iFrameDiv = document.getElementById(iFrameDivID);
    
    try {
      iFrameDiv.style.position = "absolute";
      iFrameDiv.style.width = pickerDiv.offsetWidth;
      iFrameDiv.style.height = pickerDiv.offsetHeight ;
      iFrameDiv.style.top = pickerDiv.style.top;
      iFrameDiv.style.left = pickerDiv.style.left;
      iFrameDiv.style.zIndex = pickerDiv.style.zIndex - 1;
      iFrameDiv.style.visibility = pickerDiv.style.visibility ;
      iFrameDiv.style.display = pickerDiv.style.display;
    } catch(e) {
    }
 
  } catch (ee) {
  }
 
}