If following these instructions doesn't work, then just accept, that it can't be done.
Save this in a html file:
Code:
<a href="javascript:Follow=document.getElementsByClassName('objectInfo');for (x=0;x<Follow.length;x++){Follow[x].getElementsByTagName('a')[0].click();}">Toggle Follows</a>
and open the file in your browser.
Right click the link to save it as favorite/bookmark.
While on the photobucket page, click on the favorite/bookmark.
Then all the Follow buttons should be clicked.