Include Controller file in Codeigniter SMarty view html file

[eluser]Unknown[/eluser]
Hi
i am working on codigniter + smarty
actucally i want to know that how can i include conroller file in smarty html file
what will be the file path . in wich way i inlude controller file in smarty template

like i have index.html and i want include header (controll file) in index.html file .
how can i????

is there anyone can help me please