Upload Excel in Web UI

Hi,

I have a requirement to upload an Excel file in Web UI.

I have gone through the document http://wiki.sdn.sap.com/wiki/display/CRM/CRM+Web+UI+-+Uploading+data+from+Excel+files?focusedCommentId=324174259&#comment-324174259

But, I need inputs on the following:

How to add javascript in a BSP page.

How the EH_ONSERVEREVENT gets created.

Regards,

Sayan