[phpMyAdmin Developers] Regarding ajax redirection and javascript functions.

Q.1 Is there any specific function defined for redirection of link using ajax ? Just working on a new feature stuck at point where redirection is to be made .I would like to know the name of function and its usage already defined for ajax redirection from one link to another.

Q.2 For redirecting from one page to another say (from index.php to db_sql.php) , the parameters passed in url are "db","table", "server" and "token". I am able to access token parameter from session. how to access other parameters ?

Q.3 How to display dismissible alert (the one that is used to display a change in row) ?

Q.4 In which javascript file I should place my code so that it get included in each and every page ? I am using common.js file for this purpose .