title: Is there a way to have conditional "add" events in backbone.js?
body: <p>I'm using backbone.js for my web app and it works semi-well so far. The problem is that sometimes I need to add items to the collection and have them go to the top of the page, and other times to the bottom. Sometimes I need them to animate, sometimes not. Is there a way to do this cleanly with backbone.js? Passing arguments to the "add" event would be a good way (for example "prepend: true"), but this doesn't seem to be an option...</p>
  
  <p>Thanks!</p>