Closing automatic download manager of Firefox

Hey can anybody tell me how to switch off the Internal download manager of a firefox. I really need to close it because I use IDM and sometimes it starts without my confirmation.

Here's how to program the automatic closure manager download Firefox 3 once all downloaded files:

1. Open Firefox 3
   
   
2. In the address bar, type about: config and press by [Enter]
   
   
3. Click "It promised, I will be careful!"
   
   
4. In the long list of parameters, locate the browser.download.manager.closeWhenDone
   
   
5. Double-click it to toggle the value to True
   
   
6. Click OK

Note: You can always recall the Download Manager by pressing the key combination [Ctrl] + [J].

many many thanks its works . :thumbup1: