Stop Firefox download window from blinking

The window that opens when you download a file in Firefox may sometimes be annoying, either because it pops up when you're trying to do something else or that the button/window on the windows taskbar starts to blink.

Firefox lets you disable these features through its advanced properties. Enter about:config into the address bar of Firefox, accept the "I'll be careful, I promise!" warning. Then enter one of the following in the Search field at the top:

browser.download.manager.flashCount - set to 0 (zero) to disable blinking in windows taskbar.

browser.download.manager.showWhenStarting - set to false to prevent the download window from showing at all (it won't open if it's not already open) when you start a download.

browser.download.manager.focusWhenStarting - set to false to keep the download window from stealing focus/showing when a download starts.

Almost directly copied from http://superuser.com/questions/63762/is-there-way-to-disable-download-bar-blinking-in-firefox, thanks to Adam Ryan. :)