function getTimeOffset()
{
	var now = new Date();
	return now.getTimezoneOffset();
}

function submitLogin()
{
	document.login.time_offset.value = getTimeOffset();
	document.login.submit();
}

function getkey(event)
{
	if (window.event)
	{
	   return window.event.keyCode;
	}
	else if (event)
	{
	   return event.which;
	}
	else
	{
	   return null;
	}
}

function pressedEnter(event)
{
	var key = getkey(event);

	if (key == null)
	{
		return true;
	}
	else if( key == 13 )
	{
		submitLogin();
	}
}