function MM_swapImgRestore() { //v2.0
  if (document.MM_swapImgData != null)
    for (var i=0; i<(document.MM_swapImgData.length-1); i+=2)
      document.MM_swapImgData[i].src = document.MM_swapImgData[i+1];
}

function MM_preloadImages() { //v2.0
  if (document.images) {
    var imgFiles = MM_preloadImages.arguments;
    if (document.preloadArray==null) document.preloadArray = new Array();
    var i = document.preloadArray.length;
    with (document) for (var j=0; j<imgFiles.length; j++) if (imgFiles[j].charAt(0)!="#"){
      preloadArray[i] = new Image;
      preloadArray[i++].src = imgFiles[j];
  } }
}

function MM_swapImage() { //v2.0
  var i,j=0,objStr,obj,swapArray=new Array,oldArray=document.MM_swapImgData;
  for (i=0; i < (MM_swapImage.arguments.length-2); i+=3) {
    objStr = MM_swapImage.arguments[(navigator.appName == 'Netscape')?i:i+1];
    if ((objStr.indexOf('document.layers[')==0 && document.layers==null) ||
        (objStr.indexOf('document.all[')   ==0 && document.all   ==null))
      objStr = 'document'+objStr.substring(objStr.lastIndexOf('.'),objStr.length);
    obj = eval(objStr);
    if (obj != null) {
      swapArray[j++] = obj;
      swapArray[j++] = (oldArray==null || oldArray[j-1]!=obj)?obj.src:oldArray[j];
      obj.src = MM_swapImage.arguments[i+2];
  } }
  document.MM_swapImgData = swapArray; //used for restore
}

function displayWindow(url, width, height) {
	var Win = window.open(url,"displayWindow",'width=' + width + ',height=' + height + ', resizable=0, scrollbars=yes, menubar=no' );
}


function czy_forma_dla_firm() {
 r = false;
 radio = document.getElementById('firma_radio');
 if (radio != null) {
  if (radio.checked) {
    r = true;
  }
  }
 return r;
}

function ustaw_widocznosc(element, widocznosc) {
 if (element != null) {
   element.style.display = widocznosc;
 }
}

function zmien_formularz_zamowien() {
  if (czy_forma_dla_firm()) {
    ustaw_widocznosc(document.getElementById('forma_dla_osob'), 'none');
    ustaw_widocznosc(document.getElementById('forma_dla_firm'), '');
  }
  else
  {
    document.getElementById('forma_dla_osob').className = '';
    ustaw_widocznosc(document.getElementById('forma_dla_firm'), 'none');
    ustaw_widocznosc(document.getElementById('forma_dla_osob'), '');
  }
  tylko_firmy();
}

function tylko_firmy() {
 Index = document.getElementById('product').selectedIndex - 1;
 if (((Index == 1) || (Index == 2) || (Index == 3)) && !(document.getElementById('firma_radio').checked)) {
   alert("Produkt jest dostêpny tylko dla firm i instytucji.");
   document.getElementById('firma_radio').checked = true;
   zmien_formularz_zamowien();
 }
}

//szukam zdublowanych pol takich jak: imie, nazwisko...
//i kopiuje dane
function zdubluj_dane(forma) {
 
 bFirma = czy_forma_dla_firm();

 for (i=0; i < forma.length; i++) {
   nazwa = forma.elements[i].name;
   if (nazwa != '') {
     element = document.getElementsByName(nazwa);
     if (element.length == 2) {
       if (bFirma) {
         element[1].value = element[0].value; 
       }
       else
       {
         element[0].value = element[1].value; 
       }
       
     }
   
   }
 }
}

function weryfikuj_formularz_zamowien(forma) {
 zdubluj_dane(forma);
 forma.action = 'send_ord.php'; 
}