Created browse page
1. All buttons on browse page add their related query to a session variable and redirect the browser to the results page

2. On reloading the results page the session variable is cleared

Created Results page
1. The results page takes the values of the session variable from a previous page and adds the values to the select command of its gridview

Added Export Excel function
1. This function takes contents of the gridview and converts it to Excel format.(details revised later)