var values = Array();
values['userId']     = 'gebruikersnaam';
values['password']   = 'wachtwoord';
values['locationId'] = 'Location Id';

function focusField(obj) {
	obj.style.color = '#000000';
	var arrBegin = obj.name.search(/\[/);
	if (obj.value == values[(arrBegin == -1) ? obj.name : obj.name.substr(0, arrBegin)]) {
		obj.value = '';
	}
}

function blurField(obj) {
	var arrBegin = obj.name.search(/\[/);
	if (obj.value == values[(arrBegin == -1) ? obj.name : obj.name.substr(0, arrBegin)]) {
		obj.style.color = '#A5A5A5';
	} else if (obj.value == '') {
		obj.value = values[(arrBegin == -1) ? obj.name : obj.name.substr(0, arrBegin)];
		obj.style.color = '#A5A5A5';
	}
}

function validateForm() {
	if (document.getElementById('userId').value.length == 0 && document.getElementById('userId').value != values['userId']) {
		alert("Vul a.u.b. uw gebruikersnaam in.");
		document.getElementById('userId').focus();
		return false;
	} else if (document.getElementById('password').value.length == 0 && document.getElementById('password').value != values['password']) {
		alert("Vul a.u.b. uw gebruikersnaam in.");
		document.getElementById('password').focus();
		return false;
	} else {
		document.getElementById('password').value = hex_sha1(document.getElementById('password').value);
	}
}