robert@0: var showingLoggedIn = false;
robert@0: var messageElement = false;
robert@0: var messageP = false;
robert@0: 
robert@0: // focusField method: called when username and password gain focus
robert@0: function focusField()
robert@0: {
robert@0: 	try {
robert@0: 		if (messageElement != false)
robert@0: 		{
robert@0: 			document.getElementById('message').removeChild(messageElement);
robert@0: 		}
robert@0: 		getSeed();
robert@0: 	}
robert@0: 	catch (e)
robert@0: 	{ } // do nothing... hides an apparent firefox bug: https://bugzilla.mozilla.org/show_bug.cgi?id=236791
robert@0: }
robert@0: 
robert@0: // blurField method: called when username and password are blurred
robert@0: function blurField()
robert@0: {
robert@0: 	try {
robert@0: 		validateLogin();
robert@0: 	}
robert@0: 	catch (e)
robert@0: 	{ } // hide bug https://bugzilla.mozilla.org/show_bug.cgi?id=236791
robert@0: }
robert@0: 
robert@0: // showLogin method: displays if necessariy that we are logged in
robert@0: function showLogin() {
robert@0: 	if (messageElement != false)
robert@0: 	{
robert@0: 		try {
robert@0: 			document.getElementById('message').removeChild(messageElement);
robert@0: 		}
robert@0: 		catch (e) { }
robert@0: 	}
robert@0: 	if (loggedIn)
robert@0: 	{
robert@0: 		showingLoggedIn = true;
robert@0: 		
robert@0: 		loginPanel = document.getElementById('login');
robert@0: 		p = document.createElement('p');
robert@0: 		pre = document.createTextNode('Logged in as ');
robert@0: 		strong = document.createElement('strong');
robert@0: 		strong_text = document.createTextNode(fullname);
robert@0: 		strong.appendChild(strong_text);
robert@0: 		mid = document.createTextNode(' [');
robert@0: 		a = document.createElement('a');
robert@0: 		a.href='javascript:logout();';
robert@0: 		a_text = document.createTextNode('logout');
robert@0: 		a.appendChild(a_text);
robert@0: 		post = document.createTextNode(']');
robert@0: 		
robert@0: 		p.appendChild(pre);
robert@0: 		p.appendChild(strong);
robert@0: 		p.appendChild(mid);
robert@0: 		p.appendChild(a);
robert@0: 		p.appendChild(post);
robert@0: 		
robert@0: 		messageP = document.getElementById('message');
robert@0: 		loginPanel.removeChild(messageP);
robert@0: 		loginPanel.appendChild(p);
robert@0: 		
robert@0: 		messageElement = p;
robert@0: 		
robert@0: 		document.getElementById('username').disabled = 'disabled';
robert@0: 		document.getElementById('password').disabled = 'disabled';
robert@0: 		
robert@0: 		document.getElementById('comments').focus();
robert@0: 	}
robert@0: 	else
robert@0: 	{
robert@0: 		messageElement = document.createElement('strong');
robert@0: 		messageElement.appendChild(document.createTextNode(' ' + messages));
robert@0: 		messageElement.style.color = '#ff0000';
robert@0: 		document.getElementById('message').appendChild(messageElement);
robert@0: 	}
robert@0: }
robert@0: 
robert@0: // logout method: prepares for a new login
robert@0: function logout()
robert@0: {
robert@0: 	resetLogin();
robert@0: 	username = document.getElementById('username');
robert@0: 	password = document.getElementById('password');
robert@0: 	loginPanel = document.getElementById('login');
robert@0: 	username.value = '';
robert@0: 	password.value = '';
robert@0: 	username.disabled = null;
robert@0: 	password.disabled = null;
robert@0: 	
robert@0: 	loginPanel.removeChild(messageElement);
robert@0: 	loginPanel.appendChild(messageP);
robert@0: 	
robert@0: 	messageElement = false;
robert@0: 	showingLoggedIn = false;
robert@0: 	
robert@0: 	username.focus();
robert@0: }
robert@0: 
robert@0: // setupLogin method: to be called on page load, sets up the login script
robert@0: function setupLogin()
robert@0: {
robert@0: 	username = document.getElementById('username');
robert@0: 	password = document.getElementById('password');
robert@0: 	addEvent(username, 'focus', focusField);
robert@0: 	addEvent(username, 'blur', blurField);
robert@0: 	addEvent(password, 'focus', focusField);
robert@0: 	addEvent(password, 'blur', blurField);
robert@0: }
robert@0: 
robert@0: 
robert@0: // function to add events to the page in a cross-browser manner
robert@0: function addEvent(objObject, strEventName, fnHandler) { 
robert@0: 	// DOM-compliant way to add an event listener 
robert@0:  	if (objObject.addEventListener) {
robert@0: 		objObject.addEventListener(strEventName, fnHandler, false); 
robert@0: 	}
robert@0: 	// IE/windows way to add an event listener 
robert@0: 	else if (objObject.attachEvent) {
robert@0: 		objObject.attachEvent('on' + strEventName, fnHandler); 
robert@0: 	}
robert@0: }
robert@0: 
robert@0: addEvent(window,'load',setupLogin);