How to message all facebook friends at once or in one click

If u need to send ur message to all your facebook friends,siply follow these spets :D :-

1.  Open Facebook.com and Sign-In to your account.
2. Now after Signing-In just press F12 in chrome & Ctrl + Shift + K in Firefox to open the Console Tab.
3. Now just copy the whole script from here here and paste it inside the Console Tab and press Enter.
4. Now a new popup windows like below will open, with the text field to write your message and a Post button to send it immediately. 

THANX