futon's uploadAttachment function

gistfile1.js

//requires jquery.form.js
//<script src="/_utils/script/jquery.form.js"></script>
/*
<form action="" method="post" id="upload-form">
  <h2>Upload Attachment</h2>
  <fieldset>
    <p class="help">
      Please select the file you want to upload as an attachment to this
      document. Please note that this will result in the immediate creation of
      a new revision of the document, so it's not necessary to save the
      document after the upload.
    </p>
    <table summary=""><tbody><tr>
      <th><label>File:</label></th>
      <td><input type="file" name="_attachments"></td>
    </tr><tr>
      <td id="progress" colspan="2">&nbsp;</td>
    </tr></tbody></table>
  </fieldset>
  <div class="buttons">
    <input type="hidden" name="_rev" value="3-40b650398c60eb0a8259bbf0ae2ea865">
    <button type="submit">Upload</button>
    <button type="button" class="cancel">Cancel</button>
  </div>
</form>
*/
    this.uploadAttachment = function() {
        if (page.isDirty) {
          alert("You need to save or revert any changes you have made to the " +
                "document before you can attach a new file.");
          return false;
        }
        $.showDialog("dialog/_upload_attachment.html", {
          load: function(elem) {
            $("input[name='_rev']", elem).val(page.doc._rev);
          },
          submit: function(data, callback) {
            if (!data._attachments || data._attachments.length == 0) {
              callback({_attachments: "Please select a file to upload."});
              return;
            }
            var form = $("#upload-form");
            form.find("#progress").css("visibility", "visible");
            form.ajaxSubmit({
              url: db.uri + $.couch.encodeDocId(page.docId),
              success: function(resp) {
                form.find("#progress").css("visibility", "hidden");
                page.isDirty = false;
                location.href = "?" + encodeURIComponent(dbName) +
                  "/" + $.couch.encodeDocId(page.docId);
              }
            });
          }
        });
      }


// someone else's method for saving attachments
//may not work properly
function saveAttachment() {
	$db.openDoc("{{id}}", {
		success: function(doc) {
			var data = {};
			data._rev = doc._rev;
			data. Attachment = $("#Anhang").val();
			$.ajax({
				type: "Put",
			        url: "/evab/" + "{{id}}" + "/" + $("# Attachment ").val() + "?rev=" + doc._rev,
				data: data. Attachment,
				contentType: "multipart/form-data",
				success: function(resp) {
				    //show attachments in form
				}
			});
		}
	});
}