Extending CodeIgniter $this->load->view()

[eluser]Unknown[/eluser]
Hello everybody

I need to found a theme-structure for CodeIgniter. Now, what do I need is to extend the view() function of codeIgniter. How shall I do this?

I want to add a constant path in the view function so when the user calls $this->load->view('index') it loads theme/index.php

thanks