how to pass query string value from one asp.net page to master page

hi
i want to send query string from one asp.net page(Home.aspx) to master page.
in home page i take one anchor tag like this

i want to pass job query string value to masterpage based on query string i want to bind treeview in masterpage.
but it is not working.
plz any one give me advice how to send query string to masterpage.