var sel_index=0;

function SelectAll(form)
{ if (sel_index==0)
  { document.select_img.src="images/odznacz.gif";
    sel_index=1;
    if (form.num.value>1)
      for (var i=0;i<form.num.value;i++)
        form.id[i].checked=true;
    else
      form.id.checked=true;
  }
  else
  { document.select_img.src="images/zaznacz.gif";
    sel_index=0;
    if (form.num.value>1)
      for (var i=0;i<form.num.value;i++)
        form.id[i].checked=false;
    else
      form.id.checked=false;
  }
}

function MakeList(form)
{ form.lista.value="";
  form.lista2.value="";
  if (form.num.value>1)
  { for (var i=0;i<form.num.value;i++)
      if (form.id[i].checked)
       form.lista.value=form.lista.value+form.id[i].value+",";
      else
       form.lista2.value=form.lista2.value+form.id[i].value+",";

  }
  else
  { if (form.id.checked)
      form.lista.value=form.lista.value+form.id.value+",";
    else
      form.lista2.value=form.lista2.value+form.id.value+",";
  }
  if (form.lista.value!="")
    form.lista.value=form.lista.value.substring(0,form.lista.value.length-1);
  if (form.lista2.value!="")
    form.lista2.value=form.lista2.value.substring(0,form.lista2.value.length-1);
}