Opening a new page w/ dynamic data

You can do this to open the new page with the right parameters:

Code:

window.open('<?= base_url();?>c_tunesheet/index?tuneid='+tuneID,'_blank');  

There's no need to set $config['enable_query_strings'] to TRUE. If you do, CI expects URL's like:

Code:

www.example.com/index.php?c=controllername&m=methodname[&extraparam=....]

That's not recommended however. The default uri's are segment-based.