function isValidEmail(email, required) {
    if (required==undefined) {   // if not specified, assume it's required
        required=true;
    }
    if (email==null) {
        if (required) {
            return false;
        }
        return true;
    }
    if (email.length==0) {  
        if (required) {
            return false;
        }
        return true;
    }
    if (! allValidChars(email)) {  // check to make sure all characters are valid
        return false;
    }
    if (email.indexOf("@") < 1) { //  must contain @, and it must not be the first character
        return false;
    } else if (email.lastIndexOf(".") <= email.indexOf("@")) {  // last dot must be after the @
        return false;
    } else if (email.indexOf("@") == email.length) {  // @ must not be the last character
        return false;
    } else if (email.indexOf("..") >=0) { // two periods in a row is not valid
	return false;
    } else if (email.indexOf(".") == email.length) {  // . must not be the last character
	return false;
    }
    return true;
}

function allValidChars(email) {
  var parsed = true;
  var validchars = "abcdefghijklmnopqrstuvwxyz0123456789@.-_";
  for (var i=0; i < email.length; i++) {
    var letter = email.charAt(i).toLowerCase();
    if (validchars.indexOf(letter) != -1)
      continue;
    parsed = false;
    break;
  }
  return parsed;
}

function validare_contact(frm) {
	if ((frm.nume.value == "")||(frm.nume.value == 'nume')) {
		alert("Va rugam sa completati numele");
        return false;
	}
    else if ((!isValidEmail(frm.email.value))&&((frm.tel.value == "")||(frm.tel.value == "telefon"))) {
        alert("Va rugam sa specificati o modalitate de contact: EMAIL sau NR. DE TELEFON");
        return false;
    }
	else if ((frm.mesaj.value == "")||((frm.mesaj.value == "mesaj"))) {
		alert("Va rugam sa scrieti un mesaj");
        return false;
	}
    return true;
}

function cvalidare_contact(frm) {
	if ((frm.cnume.value == "")||(frm.cnume.value == 'nume')) {
		alert("Va rugam sa completati numele");
        return false;
	}
    else if ((!isValidEmail(frm.cemail.value))&&((frm.ctel.value == "")||(frm.ctel.value == "telefon"))) {
        alert("Va rugam sa specificati o modalitate de contact: EMAIL sau NR. DE TELEFON");
        return false;
    }
	else if ((frm.cmesaj.value == "")||((frm.cmesaj.value == "mesaj"))) {
		alert("Va rugam sa scrieti un mesaj");
        return false;
	}
    return true;
}