function check()
	{
	   var komunikat=document.getElementById("komunikat");
	   document.getElementById('od_adr').className='polecam_opis';
	   document.getElementById('do_adr').className='polecam_opis';
	   document.getElementById('od').className='polecam_opis';
	   document.getElementById('do').className='polecam_opis';
	
	   var adres1 = (document.getElementById('adres_o').value);
	   var adres2 = (document.getElementById('adres_n').value);
	   var re1 = new RegExp("[^@]{1,}[@]{1}[^@.]{1,}[.]{1}[^@]{1,}","gi");
	   var re2 = new RegExp("[^@]{1,}[@]{1}[^@.]{1,}[.]{1}[^@]{1,}","gi");
	   if (re1.test(adres1) != true)
	   {
		  komunikat.innerHTML='Please provide a valid email address!';
		  document.getElementById('do_adr').className='polecam_opis_blad';
		  return false;
	   }
	   if (re2.test(adres2) != true)
	   {
		  komunikat.innerHTML='Please provide a valid email address!';
		  document.getElementById('od_adr').className='polecam_opis_blad';
		  return false;
	   }
	
	   var pers1 = (document.getElementById('pers_o').value);
	   var pers2 = (document.getElementById('pers_n').value);
	   if (pers1 == "")
	   {
		  document.getElementById('do').className='polecam_opis_blad';
	   }
	   if (pers2 == "")
	   {
		  document.getElementById('od').className='polecam_opis_blad';
	   }
	   if (pers1 == "" || pers2 == "")
	   {
		  komunikat.innerHTML='Please fill out all required fields!';
		  return false;
	   }
	   document.polecam_form.wys.value=1;
	   document.polecam_form.submit();
	   return true;
	}