what is worng with this foreach and for loops

[eluser]cahva[/eluser]
Seems to work fine.

Code:

function index()
    {
        $this->load->library('theme_lib');
        $this->theme_lib->_add_js("/* js comment */"); // this works
        for ($i=0; $i<=5; $i++) {
           $this->theme_lib->_add_js("/* js comment */"); // does not work
        }

        echo $this->theme_lib->_embed_js;
    }

..prints 7x "/* js comment */"