function azym_1()
  {
    document.getElementById('azym_01').style.display='block';
	document.getElementById('azym_02').style.display='none';
	document.getElementById('azym_03').style.display='none';
	document.getElementById('azym_04').style.display='none';
	return!1;
  }

   function azym_2()
  {
    document.getElementById('azym_01').style.display='none';
	document.getElementById('azym_02').style.display='block';
	document.getElementById('azym_03').style.display='none';
	document.getElementById('azym_04').style.display='none';
	return!1;
  }

   function azym_3()
  {
    document.getElementById('azym_01').style.display='none';
	document.getElementById('azym_02').style.display='none';
	document.getElementById('azym_03').style.display='block';
	document.getElementById('azym_04').style.display='none';
	return!1;
  }

   function azym_4()
  {
    document.getElementById('azym_01').style.display='none';
	document.getElementById('azym_02').style.display='none';
	document.getElementById('azym_03').style.display='none';
	document.getElementById('azym_04').style.display='block';
	return!1;
  }