function j2_getQueryVariable(variable) {
  var query = window.location.search.substring(1);
  var vars = query.split("&");
  for (var i=0;i<vars.length;i++) {
    var pair = vars[i].split("=");
    if (pair[0] == variable) {
      var decoded = unescape(pair[1].replace(/\+/g," "));
	  return decoded;
    }
  }
  return "";
}

function j2_writeVariable(variable) {
	document.writeln(j2_getQueryVariable(variable));
}

function j2_writeTextFormField(j2form, variable) {
	j2form[variable].value = j2_getQueryVariable(variable);
}

function j2_writeJ2Errors() {
	var j2errors = j2_getQueryVariable("j2errors");
	if ( j2errors && j2errors!="") {
		document.writeln(j2errors);
	}
}

function j2_isValidEmail(strEmail){
    validRegExp = /^[^@]+@[^@]+.[a-z]{2,}$/i;
    if (strEmail.search(validRegExp) == -1) {
      return false;
    }
    return true;
}

function j2_isEmpty(field) {
    if (field == "" || field == null || field.charAt(0) == ' ') {
	    return true;
    }
    return false;
}

var j2_languages = [
	["en","First name is missing.","Last name is missing.","Your e-mail address is not valid."],
	["nl","Voornaam is niet ingevuld.","Achternaam is niet ingevuld.","Uw e-mailadres is ongeldig."],
	["de","Vorname fehlt.","Nachname fehlt.","Diese E-Mail-Adresse ist ung\u00FCltig."],
	["es","Falta su nombre.","Falta su apellido.","Su direcci\u00F3n de correo electr\u00F3nico no es v\u00E1lida."],
  ["it","Nome mancante.","Cognome mancante.","L'indirizzo di posta elettronica non \u00e8 valido."],
	["fr","Il manque le pr\u00E9nom.","Il manque le nom.","Votre adresse e-mail n'est pas valide."]
]

function j2_getLanguageString(item,language) {
	for (var i=0; i<j2_languages.length; i++) {
		if (j2_languages[i][0]==language) {
			return j2_languages[i][item];
		}
	}
	return j2_languages[0][item];
}
	
function j2_doCheck(j2form,language) {
	if (j2_isEmpty(j2form.firstName.value)) {
		alert(j2_getLanguageString(1,language));
		return false;
	}
	if (j2_isEmpty(j2form.lastName.value)) {
		alert(j2_getLanguageString(2,language));
		return false;
	}
	if (!j2_isValidEmail(j2form.email.value)) {
		alert(j2_getLanguageString(3,language));
		return false;
	}
	return true;
}