Install Firefox DragDropUpload, for easier attachments and uploads
DragDropUpload is an add-on for Firefox, that will let you fill an upload input of a form using drag and drop instead of browsing to locate the file on your computer. Just drop the file into the input box and then send it.
Gmail – Just drop the files over the blue area of the Gmail panel; Firefox 3.0 – drop into the Browse button; Prism 0.9 supported; drop snippets of text, html pages, or email texts and the extension will generate a temporary file for you. For example to attach a Thunderbird email as attachment press CTRL+U CTRL+A and drop it.