subtotal and grand total of a page

hello,

i don't have any exact scenario.Just i would like to know how can i get subtotal and grand total.It would be great if you can tell me with any example.

Thanks.

For grand total you need to add your entire sub total from different page. So you need to hold your subtotal values in session and add it to get the grand total. For subtotal you can use JavaScript. You can tell us about the exact scenario so that we can give you exact solution.