View source

You can add header and footer content to each page rendered 
within your view. Simply create or modify the footer and header 
functions within your [[:Category:View|View]]. They should return the content as a 
string. 

''Note: This content will be displayed no matter what request 
type is being processed. Be careful when using headers and 
footers in conjunction with a view that outputs XML or JSON 
encoded data.''
[[Category:View]]