function pobierz_kat(id){

getData('./moduly/pobierz_kat.php?id='+id, 'pod_kat');

}
function wyczysc(){

getData('./moduly/pobierz_kat.php?id=brak', 'pod_kat');
}

function pokaz(nr){
document.getElementById('b_kat_'+nr).style.display='block';
}
function ukryj(nr){
document.getElementById('b_kat_'+nr).style.display='none';
}

function margines(a,lvl){
var i = a;
var szerokosc=0, dana=0, lewy=0,blok=0;

for (n = 1; n <i; n++)
{

dana = document.getElementById('li_'+lvl+'_'+n).offsetWidth;
szerokosc = szerokosc+dana;
}
lewy = "-"+szerokosc+"px";

blok = 'bl_'+lvl+'_'+i;

document.getElementById(blok).style.marginLeft = lewy;

//document.write(lewy);
}


function pokazObraz(foto)
{


var domena = 'http://192.168.0.100/monika-kupiec/';
img  =  new Image();
img.src = domena+'tmp/obraz/'+foto;

var wynik,c, y = img.height, x = img.width;
     c= (y / x);
             //echo $obraz.' '.$c.'  ';
                  if(c > 0.6)
                    {
                    wynik = 'height="312px"';
                    }
                    else
                    {
                     wynik = 'width="500px"';
                    }
    

document.getElementById('tu_foto').innerHTML ='<img src="'+domena+'/tmp/obraz/'+foto+'" '+wynik+'>';
document.getElementById('loading').style.display='none'; 
document.getElementById('tu_foto').style.display='block';
}


function dalej(nr)
    {
      var next = nr+1;
    document.getElementById('zakladka_'+nr).style.display='none'; 
    document.getElementById('zakladka_'+next).style.display='block';
   
    document.getElementById('str_'+nr).style.display='none'; 
    document.getElementById('str_'+next).style.display='block';
    
    }

function wstecz(nr)
    {
     var back = nr-1;
    document.getElementById('zakladka_'+nr).style.display='none'; 
    document.getElementById('zakladka_'+back).style.display='block';
   
    document.getElementById('str_'+nr).style.display='none'; 
    document.getElementById('str_'+back).style.display='block';
    
    }
    
    
 function wybierz(field, myselection)
    {
      var fieldid;
      var pos;
      var criteria;
      var strng;
      strng = myselection.value;
      for (i=0; i<field.length; i++)
        {
          if (strng=="all")
            {
            field[i].checked = true;
            }
          else
            {
              fieldid = field[i].id;
              pos = strng.substring(0,1);
              criteria = strng.substring(1,2);  //this gets the information we want to evaluate
              if (fieldid.substring(pos,pos+1)==criteria)
                {
                  field[i].checked = true;
                }
              else
                {
                  field[i].checked = false; //you could leave this out if you don't want to clear the check boxes
                }
            }
        }
    }


function ukryj(parm){
var parm;
var zw = document.getElementById('but_zw');
var ozw = document.getElementById('but_ozw');
var zw1 = document.getElementById('but_zw1');
var ozw1 = document.getElementById('but_ozw1');
                if(parm == 'ukryj_zw'){
                        zw.style.display = 'none';
                        ozw.style.display = 'block';
                        zw1.style.display = 'none';
                        ozw1.style.display = 'block';
                        }
                if(parm == 'ukryj_ozw'){
                        zw.style.display = 'block';
                        ozw.style.display = 'none';
                        zw1.style.display = 'block';
                        ozw1.style.display = 'none';
                        }

}