For anyone else who wants to dig into this more deeply the object that holds the dial buttons is:
<vbox id="speedDialPayload">
Also if you look into your profile under `AppData\Roaming\Mozilla\Firefox\Profiles\w8k1asca.default\FVD Toolbar` (Windows) there's an sqlite database with all the links and urls, with a folder called `sd` which holds the thumbnail images before they're resized to fit the buttons.
I was initially very excited by this Stack Overflow conversation about using the Web Developer or Firebug tools to extract the computed html: http://stackoverflow.com/questions/6364138/how-to-get-fully-computed-html-instead-of-source-html. Unfortunately neither route worked for me with FVD.
For anyone else who wants to dig into this more deeply the object that holds the dial buttons is: Also if you look into your profile under `AppData\Roaming\Mozilla\Firefox\Profiles\w8k1asca.default\FVD Toolbar` (Windows) there's an sqlite database with all the links and urls, with a folder called `sd` which holds the thumbnail images before they're resized to fit the buttons.