function doAutoTab(control, keyCode, maxLength, nextControlId)
{
	if(control.value.length == maxLength &&
		((keyCode >= 48 && keyCode <= 57)
		|| (keyCode >= 65 && keyCode <= 90)
		|| (keyCode >= 96 && keyCode <= 122)))
	{
		document.getElementById(nextControlId).select();
	}
}