window.onload = function()
{
	if(document.getElementById('txtUsername').value == "")
	{
		document.getElementById('txtUsername').focus();
	}
	else
	{
		document.getElementById('txtPassword').focus();
	}
}

function validateLogin()
{
	if(!validateNotEmpty(document.getElementById('txtUsername').value))
	{
		alert("Please enter your Email Address.");
		document.getElementById('txtUsername').focus();
		return false;
	}
	if(!validateEmail(document.getElementById('txtUsername').value))
	{
		alert("Please enter a valid Email Address.");
		document.getElementById('txtUsername').focus();
		return false;
	}
	if(!validateNotEmpty(document.getElementById('txtPassword').value))
	{
		alert("Please enter your Password.");
		document.getElementById('txtPassword').focus();
		return false;
	}
	
	return true;
}