Excel sheet manipulation

Here is what i have to do a webpage gives a excel sheet with if we set some conditions and hit get button,then i have to filter for some data on the excel sheet and put it on another excel sheet,like wise have to get data from different excelsheet and put it in a single file.How to do that.

using javascript on page will be开发者_开发知识库 better.

It is not clear whether the web page contains a real Excel spreadsheet, or a HTML/JavaScript representation of it. The former is only possible (if I remember correctly) only in IE and some ActiveX controls, or maybe with some MS Office showing Excel in browser directly. I am not sure about this because I quit working with MS technologies a while ago.

So, try to view the source of the page and determine which is it.