function kontaktai()
{
	var pala = document.getElementById('kontaktai-palaukite');
	var forma = document.getElementById('kontaktu-forma');

	pala.style.display = 'block';
	forma.style.display = 'none';

	  var request =  new XMLHttpRequest();
	  request.open("POST", "?ajax=1", true);
	  request.setRequestHeader("Content-Type",
							   "application/x-www-form-urlencoded");
	 
	  request.onreadystatechange = function() {
		var done = 4, ok = 200;
		if (request.readyState == done && request.status == ok) {
		  if (request.responseText) {
			  if(request.responseText == 'ok')
			  {
				alert('Laiškas sėkmingai išsiųstas!');
				pala.style.display = 'none';
			  }
			  else
			  {
				alert(request.responseText);
				pala.style.display = 'none';
				forma.style.display = 'block';
			  }
		  }
		}
	  };
	  request.send('vardas='+escape(forma.vardas.value)+'&pastas='+escape(forma.pastas.value)+'&telefonas='+escape(forma.telefonas.value)+'&zinute='+escape(forma.zinute.value)+'&captcha='+escape(forma.captcha.value));

}