function change_register(id){

	if(id=='zakaznik')
	{	  
		document.getElementById('registracia1').style.display="none";
		document.getElementById('registracia2').style.display="none";
		document.getElementById('registracia3').style.display="none";
		document.getElementById('registracia4').style.display="none";
	}
  else
	{
		document.getElementById('registracia1').style.display="block";
		document.getElementById('registracia2').style.display="block";
		document.getElementById('registracia3').style.display="block";
		document.getElementById('registracia4').style.display="block";
	}
}