function validateVin(year, vin)
{
	if(year >= 1980)
	{
		var numErrors = parseInt(document.getElementById('core_errors').value);
		
		// Must have 17 characters
		if(vin.length != 17)
		{
			document.getElementById('error_vin').style.display = 'inline';
			document.getElementById('core_errors').value = numErrors + 1;
		}
		else
		{
			// If it's already displayed, decrement error
			var currentDisplay = document.getElementById('error_vin').style.display;
			if(currentDisplay == 'inline')
			{
				document.getElementById('error_vin').style.display = 'none';
				document.getElementById('core_errors').value = numErrors - 1;
			}
		}
	}
}
function changeCountdown(type, length)
{
	var numchars = (document.getElementById('vehicle-' + type).value).length;
	var numleft = length - numchars;
	var message = "";
	if(numleft == -1)
	{
		message = '<strong>' + Math.abs(numleft) + '</strong> character over!';
	}
	else if(numleft < 0)
	{
		message = '<strong>' + Math.abs(numleft) + '</strong> characters over!';
	}
	else if(numleft == 1)
	{
		message = '<strong>' + Math.abs(numleft) + '</strong> character left';
	}
	else
	{
		message = '<strong>' + Math.abs(numleft) + '</strong> characters left';
	}
	document.getElementById('countdown-' + type).innerHTML = message;
}