Firefox Extension to auto left click

[Nosraahl]

Hi,

I'm currently using the Firefox entention 'Alert Box' which checks for changes on certain parts of web pages periodically, and was wondering if there's a similar extention that will 'click' a certain area of a screen (such as a buy button) automatically once a change has occured?

Basically, the reason I need this is that Alert Box wll alert me of a price change on a retail website (say, Amazon marketplace), but I want to order instantly once a price has changed to avoid missing out on certain deals which go very quickly - unfortunately so far it seems regular human speed isn't enough :) Note: This isn't to take advantage of any of Amazons lightning deals/black Friday style things - just plain old regular Amazon Marketplace where certain items are hard to find, and occasionally are listed super cheap.

I'm sure there must be some sort of macro that I can run, but unfortunately I'm a mere computer novice so wouldn't have a clue about all that. Any help or ideas would be great.

[Nosraahl]

I'm thinking of course that I'll be left signed into amazon with 1 click ordering turned on, hence only needing a 'click'