function onl()
{
   login();
}
function login() {
   if(document.getElementById('log')) {
         var b = document.getElementById('but');

         b.onclick = function() {
            var l = document.getElementById('log');

            if(l.login.value=='') {
               if(l.pass.value=='') {
                  alert ("Wypełnij formularz logowania.");
               } else {
                  l.submit();
               }
            } else {
               l.submit();
            }
         }
   }
}

// POPUP
function popup (adr, szer, wys){

      var iH = window.innerHeight;
      var iW = window.innerWidth;

      if (!iH){
         var wh = document.body.clientHeight/2;
      } else {
         var wh = iH/2;
      }

      if (!iW){
         var ww = document.body.clientWidth/2;
      } else {
         var ww = iW/2;
      }
      
      var h = wh - (wys/2);
      var w = ww - (szer/2);

   noweOkno = window.open(adr ,'okno' , 'width='+szer+', height='+wys+', top='+h+', left='+w+', menubar=no, status=no, locationbar=no, scrollbars=yes, resizeable=no');

}

window.onload = onl;



last="d1";
function f(x){
document.getElementById(last).className='niewidoczna';
document.getElementById(x).className='widoczna';
last=x;
}

//SHOW
function show(id)
{
  var s = document.getElementById(id);
  if(s)
  {
    if(s.style.display=='none')
      s.style.display='block';
    else
      s.style.display='none';

  }
}
 //SHOW2
function showAnsw(t, id)
{
  var s = document.getElementById(id);
  if(s)
  {
    if(s.style.display=='none')
    {
      s.style.display='block';
      t.innerText='ukryj';
    } else
    {
      s.style.display='none';
      t.innerText='więcej';
    }
  }
}