When I generate this table inside this JSP page, it will offer a
button for user to click if he/she decides to export the HTML table
into an Excel sheet (which get displayed directly back in the
browser), then user can save his/her this Excel spreadsheet into his/
her local file system.

Can someone help me on how I can convert this HTML table to Excel
using XSLT?  Sample code would really help also, if there's any URL to
refer me to.

Is it a good idea to generate the Excel file (as temporary file which
to be sent back to browser later if user click the button) at the same
time when the HTML table get generated?  Then remove this temporary
Excel file later.

Any comments?  Thanks,
Jimmy