Btn to Cancel FileReference download

Hi, I can't figure out how to make a button cancel downloads
started using FileReference. Below is the code that is used to
start the download. If you could let me know the right code to put
in the on(release) of my cancel button that would be great. I've
spent so much time trying to figure this out, and I just can't get
it. Thanks!
import flash.net.FileReference;
var listener
bject = new Object();
listener.onCancel = function(file:FileReference):Void {
//the code for what to do when user hits cancel on dialogue
box
listener.onOpen = function(file:FileReference):Void {
//etc etc these listeners go on
};

Sorry that I was not able to successfully provide an answer.
As I said I use Windows, but I would have expected the functionality to be very similar with Linux.
I am having difficulty understanding
*exactly what it is that you are attempting to do,
*and why you consider Firefox's behaviour to be anything other than as expected.
Someone else may understand better, and it may help if you give a specific example.
* explain what sort of material you are trying to download, eg computer programmes, video etc
* what site you are using, with the name and the correct link
* an example file you tried, again with name and link <br/>(it would help if you give examples of free publicly accessible sites and files)
# explain what you did and what happened
# explain what the expected behaviour was
# explain why you think something is wrong
There is always the possibility using specialist download managers but that is outside the scope of this forum.
'''Did you read the information shown by the blue clickable links in my first message ?'''
* specifically https://support.mozilla.com/en-US/kb/Downloads%20window#w_what-can-i-do-with-the-downloads-window
Part of which is
''"Remove the file's entry: If you do not wish to keep a record of a particular download, simply right-click the file entry, then select Remove From List (This will remove the entry from the list; it will not delete the file itself). "''
That also lists and explains: Pause, Cancel, Open the file, Open the file's folder, and Retry a download.

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