function initializeLogin()
{
	var userNameTextBox = document.getElementById('txtLoginUserName');
	var passWordTextBox = document.getElementById('txtLoginPassword');
	if (userNameTextBox && passWordTextBox)
	{
		addEventListener(userNameTextBox, 'keydown', userNameTextBoxKeyDown, false);
		addEventListener(passWordTextBox, 'keydown', passwordTextBoxKeyDown, false);
	}
}

function addEventListener(target, type, listener, useCapture)
{
	if (target)
	{
		if (target.addEventListener)
		{
			target.addEventListener(type, listener, useCapture);
		}
		else if (target.attachEvent)
		{
			target.attachEvent('on' + type, listener);
		}
	}
}

function userNameTextBoxKeyDown(e)
{
	var source = e.srcElement ? e.srcElement : (e.target ? e.target : e);
	var key = e.charCode ? e.charCode : (e.keyCode ? e.keyCode : -1);
	var returnValue = true;
	if (source && key == 13)
	{
		var passWordTextBox = document.getElementById('txtLoginPassword');
		if (passWordTextBox)
		{
			passWordTextBox.focus();
		}
		returnValue = cancelEvent(e);
	}
	
	return returnValue;
}

function passwordTextBoxKeyDown(e)
{
	var source = e.srcElement ? e.srcElement : (e.target ? e.target : e);
	var key = e.charCode ? e.charCode : (e.keyCode ? e.keyCode : -1);
	var returnValue = true;
	if (source && key == 13)
	{
		var loginButton = document.getElementById('btnLoginButton');
		if (loginButton)
		{
			loginButton.click();
		}
		returnValue = cancelEvent(e);
	}
	
	return returnValue;
}

function cancelEvent(e)
{
	if (e && e.returnValue)
	{
		e.returnValue = false;
	}
	if (e && e.cancelBubble)
	{
		e.cancelBubble = true;
	}
	if (window.event && window.event.returnValue)
	{
		window.event.returnValue = false;
	}
	if (window.event && window.event.cancelBubble)
	{
		window.event.cancelBubble = true;
	}
	if (e && e.preventDefault)
	{
		e.preventDefault();
	}
	
	return false;
}

initializeLogin();