Due to the differences and limitation of different browsers, some calculations, which need XML database or AJAX may not run on some of them, such as Firefox and Chrome, except for IE. Please use IE7 or higher to make full use of the calculation functions of this Site.
Calculations on some pages are dependent on other data file(s) being loaded. In this case, Waite for the page to be fully loaded. Otherwise, calculation may be terminated and error message may appear.