function checkInput()
{
	var cforce = window.document.forceselect.force;
	
	if (cforce.value == 'na')
	{
		alert('Please select a police force from the drop down menu.');
		cforce.focus();
		return false;
	}
	else
	{
		return true;
	}
}

function alertChange(role, onOff)
{
	if (role == 1 && onOff == 1)
	{
		document.getElementById('pcso_alertwarning').className = 'alertDisplay';
	}
	else if (role == 1 && onOff == 0)
	{
		document.getElementById('pcso_alertwarning').className = 'alertWarning';
	}
	else if (role == 0 && onOff == 1)
	{
		document.getElementById('po_alertwarning').className = 'alertDisplay';
	}
	else if (role == 0 && onOff == 0)
	{
		document.getElementById('po_alertwarning').className = 'alertWarning';
	}
	else if (role == 2 && onOff == 1)
	{
		document.getElementById('spe_alertwarning').className = 'alertDisplay';
	}
	else if (role == 2 && onOff == 0)
	{
		document.getElementById('spe_alertwarning').className = 'alertWarning';
	}
}

function checkLogin()
{
	var cuser = window.document.login.username;
	var cpass = window.document.login.password;
	
	if (cuser.value == '' || cpass.value == '')
	{
		alert('Please enter a valid username and password.');
		cuser.focus();
		return false;
	}
	else
	{
		return true;
	}
}

function checkEmail() 
{
	with (window.document.emailform)
	{
		cemail = email;
		cforce = force;
	}
	
	if (cforce.value == 'na')
	{
		alert('Please select a force that you would like to receive updates for.');
		cforce.focus();
		return false;
	}
	else if (cemail.value == '')
	{
		alert('Please enter your email address.');
		cemail.focus();
		return false;
	}
	else
	{
		return true;
	}
}

function checkVacEmail()
{
	if (window.document.emailalert.email.value == '')
	{
		alert('Please enter your email address.');
		return false;
	}
}