function toggle_visibility(id) 
{
       var e = document.getElementById(id);
       if(e.style.display == 'block')
          e.style.display = 'none';
       else
          e.style.display = 'block';
}



function validateLogin(formName)
{
	if(formName.username.value == '')
	{
		alert('Please enter a username');
		return false;
	}
	else if(formName.email.value == '')
	{
		alert('Please enter an email');
		return false;
	}
	else if(formName.password.value == '')
	{
		alert('Please enter a password');
		return false;
	}
	else if(formName.terms.checked == false)
	{
		alert('You must agree to our terms and conditions before you can login.');
		return false;
	}
}