This is your second time posting the same question.
What exactly are you looking to do?
Is add_submenu() a function you created?
You can just use javascript:void(0); as the href for the parent link
My first was to ask why it was not showing on a live server. This was down to file location and fixed as I mentioned in my post.
This questions is about how the menu functions and how to make nothing happen on the title when clicked in the ADMIN section and only have function calls when the user clicks the sub menu
Many thanks
For the top menu item create a custom link and give it an href of javascript:void(0);
then create your sub-menu links under it with the pagelinks