ns4 = (document.layers) ? true:false;
ie4 = (document.all) ? true:false;
ng5 = (document.getElementById) ? true:false;


function showElement(id) {
if (ng5){
 document.getElementById(id).style.visibility = "visible";
 document.getElementById(id).style.display="block";
}
else if (ns4) {
 document.layers[id].visibility = "show";
}
else if (ie4) {
 document.all[id].style.visibility = "visible";
 document.all[id].style.display="block";
}
resizeK2();
}

function hideElement(id) {
if (ng5){
 document.getElementById(id).style.visibility = "hidden";
 document.getElementById(id).style.display="none";
}
else if (ns4) {
 document.layers[id].visibility = "hide";
}
else if (ie4) {
 document.all[id].style.visibility = "hidden";
 document.all[id].style.display="none";
}
resizeK2();
}


function getElement(id) {
if (ng5){
 return document.getElementById(id);
}
else if (ns4) {
 return document.layers[id];
}
else if (ie4) {
 return document.all[id];
}
}


function pop(plik,w,h)
{
okno = null;
if(window.screen)
{
aw = screen.availWidth;
ah = screen.availHeight;
}
else
{
aw=640;
ah=480;
}
dane="width="+w+",height="+h+",left="
+(aw-w)/2+",top="
+(ah-h)/2 
+",toolbar=no,location=no,directories=no,"
+"status=no,menubar=no,"
+"scrollbars=yes,resizable=no";
okno=window.open(plik,'pop',dane);
}


function findPos(obj) {
  var offsetLeft = offsetTop = 0;
    while (obj) {
      offsetLeft += obj.offsetLeft;
      offsetTop  += obj.offsetTop;
      obj = obj.offsetParent;
  }
  return [offsetLeft, offsetTop];
}