i have 1 master page with 5 dropdownlists on it. The thing is, the master page has href's to aspx pages that use this master page as pagebehind. now lets save i am in page1.aspx with master1.master as pagebehind. If i select couple of dropdownlists, and then click on an href, the whole master page reloads. how do i catch this in session before postback?