use an <addr> - [x] @mentions,

[usernamealreadyis]

function fancyAlert(arg) {
  if(arg) {
    $.facebox({div:'#foo'})
  }
}

I think you should use an
<addr> - [x] @mentions, #refs, links, formatting, and tags supported

• list syntax required (any unordered or ordered list supported)
• this is a complete item
• this is an incomplete item