Invite all your friends to a facebook event !
Step 1: Create the event as usual.
Step 2: Select “Invite Friends”.
Step 3: Set it to “sort by name” to invite your entire friends list or select a particular list of friends you want to invite.
Step 4: In the Firefox menu, go to Tools – Web Developer – Scratchpad. It will open a little window.
Step 5: Paste this code into the scratch pad after the existing text then press Enter.
This code will automatically invite all your friends to a facebook event for you!
Step 6: Give it a minute or two and repeat until all of your friends have been selected.
Step 7: When your friends are selected then go to Execute – Run int he menu bar.