handler.coffee

handler = ()->
  document.getElementById("fileField").files
  
  # Make sure a file is selected first
  if files.length <= 0
    alert('choose a file, first')
    return
  
  file = files[0]
  fd = new FormData()
  fd.append("fileForm", file)
  
  xhr = new XMLHttpRequest()
  
  # define our finish fn
  loaded = ()->
    alert('finished uploading')
    $("#addFile").one "click", handler
    
  xhr.addEventListener 'load', loaded, false
  
  # add progress indicator
  xhr.upload.onprogress = (e)->
    percent = Math.round((e.loaded * 100) / e.total)
    $("#progress").width "#{percent}%"
    $("#progressDisplay").html "#{percent}%"
    
  xhr.open "post", "/mUpload"
  xhr.send fd

$(document).onReady ()->
  $("#addFile").one "click", handler