STEP 1:

Get FIREFOX:

STEP 2:

Official Add-On:

Firefox will pop-up a bar at the top of your browser, Click Allow, looks like:

You will get a popup, wait 3 seconds and click the install button, looks like:

Then you need to Restart Firefox, button looks like:

 
 

STEP 3:

Add-On Script:

Press Install in the pop-up, looks like:

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STEP 4:

Now if you have done it correctly, when you right-click that monkey
in the bottom-right of your web browser, you should see this installed, looks like:

You need to add the facebook url to the script so it will work:
Right Click the monkey at the BOTTOM RIGHT of your screen and CLICK Manage User Scripts:

Then Click the first Add button, looks like this:

When the box pops up, make sure the link looks exactly like the below picture and press OK:

 
 

STEP 5:

Invites:

Wait a few seconds, and a box will pop up.

Four Lines up from the bottom in the box, it says, “Select/Deselect All Friends”. Looks like this:

Click “Select” and you’re all done! It will choose all your friends while you go do something!

Depending on how many friends you have, and depending on how fast or slow your computer is, it may take anywhere from 10 seconds to 10 minutes. It will only be 10 minutes if you like still use Windows 98!

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