function checkemail(str)
{
 var filter = /^([\w-]+(?:\.[\w-]+)*)@((?:[\w-]+\.)*\w[\w-]{0,66})\.([a-z]{2,6}(?:\.[a-z]{2})?)$/i
 if (filter.test(str)) 
  testresults = true
 else
 {
  testresults = false
 }
 return (testresults)
}

function trim(s) {
   while (s.substring(0,1) == ' ') {
     s = s.substring(1,s.length);
   }
   while (s.substring(s.length-1,s.length) == ' ') {
     s = s.substring(0,s.length-1);
   }
   return s;
}

function newsltr_s()
{
 if (checkemail(document.getElementById("n_email").value))
  {
  xajax_newslt_subs(langJS, document.getElementById("n_nazw").value, document.getElementById("n_firma").value, document.getElementById("n_miejsc").value, document.getElementById("n_email").value);
  }  
 else 
  alert("Nieprawidłowy adres e-mail w polu: Adres e-mail");
}

function napisz()
{
 if (checkemail(document.getElementById("n_email").value))
  {
   xajax_writeTOus(langJS, document.getElementById("n_nazw").value, document.getElementById("n_firma").value, document.getElementById("n_email").value, document.getElementById("n_msg").value);
  }  
 else 
  alert("Nieprawidłwy adres e-mail w polu: Adres e-mail");
}

function submitENT(e)
{
 var keynum;

 keynum = 0;
 if (window.event) // IE 
 {
  keynum = e.keyCode;
 }
 else if(e.which) // Netscape/Firefox/Opera
 {
  keynum = e.which;
 }
 if (keynum == 13) return(true); else return(false);
}