function SchowajWszystkie(index)
{
 document.getElementById('cotomobile').style.display=(index =='cotomobile')?"block":"none";
 document.getElementById('atuty').style.display=(index =='atuty')?"block":"none";
 document.getElementById('mozliwosci').style.display=(index =='mozliwosci')?"block":"none";
 document.getElementById('start').style.display=(index =='start')?"block":"none";
 document.getElementById('obsluga').style.display=(index =='obsluga')?"block":"none";
 document.getElementById('aktualnosci').style.display=(index =='aktualnosci')?"block":"none";
 document.getElementById('przepisy').style.display=(index =='przepisy')?"block":"none";
 document.getElementById('logowanie').style.display=(index =='logowanie')?"block":"none";
 document.getElementById('szyfrowanie').style.display=(index =='szyfrowanie')?"block":"none";
 document.getElementById('technologia').style.display=(index =='technologia')?"block":"none";
 document.getElementById('cennik').style.display=(index =='cennik')?"block":"none";
 document.getElementById('onas').style.display=(index =='onas')?"block":"none";
  document.getElementById('rejestracja').style.display=(index =='rejestracja')?"block":"none";
 document.getElementById('kontakt').style.display=(index =='kontakt')?"block":"none";
}