title: How to use javascript or jQuery to quickly select a preset of multi-select listbox items?
body: <p>So say my page has a list of indexes '1,3,4,5,9,12' and a multi-select listbox with 12 items in it.</p>
  
  <p>What's a fast way to use javascript to tell the listbox to multi-select all items at those indexes?</p>
  
  <p>How would this be done using jQuery?</p>
  
  <p>So for example if the user selects the 'caramel' preset associated with the 'candybar' listbox, it will select all the candy bars that have caramel... I think you get the idea.</p>