title: Valums fileuploader with multiple instances
body: <p>Im using multiple instances with <a href="https://github.com/valums/file-uploader" rel="nofollow">valums fileuploader</a>, but it seems that uploader only use last settings for every instances, is there an option to avoid this and use local settings? Uploading goes fine on the right instance, but element inside initializeUploader are always the same, no matter which instance im using.</p>
  
  <pre><code>jQuery(function() {
      $("[rel='uploadable']").each(function(){
          initializeUploader($(this).attr("id"))
      })
  });
  function initializeUploader(anchor) {
      element = document.getElementById(anchor)
      uploader = new qq.FileUploader({
          element: element,
          action: element.getAttribute("data-upload-path"),
          allowedExtensions: ["png", "gif", "jpg", "jpeg"],
          params: {
              authenticity_token: $("meta[name=csrf-token]").attr("content")
          },
          onSubmit: function(id, fileName){
              console.log ($(element))
              $(element).append("&lt;span class='image'&gt;&lt;div id='progress-" + id + "'&gt;&lt;/div&gt;&lt;/span&gt;")
          },
          onProgress: function(id, fileName, loaded, total){
              var progress = (loaded / total) * 100;
              $("#progress-" + id).progressbar({value: progress})
          },
          onComplete: function(id, fileName, responseJSON){
              image_url = ""
              $.each(responseJSON, function(key, item) {
                  if (key == "url")
                      image_url = item
              });
  
              $("#progress-" + id).remove();
              console.log($(element).parent())
              console.log($(element).closest(".quanta"))
              console.log(image_url)
              $(element).closest(".quanta").css({'width': '300px', 'height': '300px', 'background-color': '', 'background-image': 'url(' + image_url + ')', 'background-size': '100% 100%'})
          },
          debug: true
      });
  };
  </code></pre>