AJAX :: How To Select The Dropdown Values(this Works) And Then Click The Button To Redirect To Another Page

I have a master page with an accordion in it inside the accordion panel1 are 3 dropdownlists (ajax cascading) and a button when the default page is loaded i want to select the dropdown values(this works) and then click the button to redirect to another page called test.sapx (this works). The thing i also want to do is pass the dropdownlist values to the new page as the dropdownlists reset. I was trying to do this through the click event on the button and set them in a session variable. The click event isn't firing at all. The page redirects and then if i click the button again it fires the event?