function isEmpty(e)
{
   var strTemp = e.value.replace(/^\s+|\s+$/g, "");
   if(strTemp.length > 0)
   {
     return false;
   }
   return true;
}

function string_ok(id) {
	var re = /^[0-9a-zA-ZÁáÉéÍíÓóÚúÑñ\;\:\,\*\#\+\.\\\[\]\(\)\-\_\/\[\] ]+$/;
	if ((document.getElementById(id).value != null) && (re.test(document.getElementById(id).value))) {
		return true;
	}
	else {
		document.getElementById(id).focus();
		return false;
	}
}

function combo_ok(id)
{
	combo = document.getElementById(id);
	if ((combo.options[combo.selectedIndex].value != null) && (combo.options[combo.selectedIndex].value != "") && (combo.options[combo.selectedIndex].value != "0")) {
		return true;
	}
	else {
		document.getElementById(id).focus();
		return false;
	}
}

function email_ok(id) {
	var re = /^[a-zA-Z][\w\.-]*[a-zA-Z0-9]@[a-zA-Z0-9][\w\.-]*[a-zA-Z0-9]\.[a-zA-Z][a-zA-Z\.]*[a-zA-Z]$/;
	if ((document.getElementById(id).value != null) && (re.test(document.getElementById(id).value))) {
		return true;
	}
	else {
		document.getElementById(id).focus();
		return false;
	}
}

function name_ok(id) {
	var re = /^[a-zA-ZÁáÉéÍíÓóÚúÑñ ]+$/;
	if ((document.getElementById(id).value != null) && (re.test(document.getElementById(id).value))) {
		return true;
	}
	else {
		document.getElementById(id).focus();
		return false;
	}
}

function number_ok(id) {
	var re = /^\d+$/;
	if ((document.getElementById(id).value != null) && (re.test(document.getElementById(id).value))){
		return true;
	}
	else{
		document.getElementById(id).focus();
		return false;
	}
}

function JoinToNewsletter(email, lang)
{
	if (email_ok(email.id))
        {
            var myConn = new XHConn();
            var ObjHotels = email;
            if (!myConn) alert("XMLHTTP not available. Try a newer/better browser.");
            var fnWhenDone = function (oXML) {ObjHotels.value = oXML.responseText;};
            myConn.connect("/ajax/join-to-newsletter.php", "POST", "lang=" + lang + "&email=" + email.value, fnWhenDone);
        }
        else alert (document.getElementById("msg_empty_newsletter_email").value);
}

function XHConn()
{
  var xmlhttp, bComplete = false;
  try { xmlhttp = new ActiveXObject("Msxml2.XMLHTTP"); }
  catch (e) { try { xmlhttp = new ActiveXObject("Microsoft.XMLHTTP"); }
  catch (e) { try { xmlhttp = new XMLHttpRequest(); }
  catch (e) { xmlhttp = false; }}}
  if (!xmlhttp) return null;
  this.connect = function(sURL, sMethod, sVars, fnDone)
  {
    if (!xmlhttp) return false;
    bComplete = false;
    sMethod = sMethod.toUpperCase();

    try {
      if (sMethod == "GET")
      {
        xmlhttp.open(sMethod, sURL+"?"+sVars, true);
        sVars = "";
      }
      else
      {
        xmlhttp.open(sMethod, sURL, true);
        xmlhttp.setRequestHeader("Method", "POST "+sURL+" HTTP/1.1");
        xmlhttp.setRequestHeader("Content-Type",
          "application/x-www-form-urlencoded");
      }
      xmlhttp.onreadystatechange = function(){
        if (xmlhttp.readyState == 4 && !bComplete)
        {
          bComplete = true;
          fnDone(xmlhttp);
        }};
      xmlhttp.send(sVars);
    }
    catch(z) { return false; }
    return true;
  };
  return this;
}