Mozilla, determined to release Firefox 3.6 before year's end, is also determined to squeeze as many features as possible into the new browser.

The latest example: support for the File interface that adds more sophistication to uploading and some other chores.

Support for the feature is one of the 133 changes that arrived in Firefox 3.6 beta 4, which the Mozilla project released Thursday.

The File API (application programming interface), a draft standard at the World Wide Web consortium, lets browsers handle files better. Among its abilities are uploading multiple files at once, showing thumbnail previews of images that have been selected for upload, breaking a long video upload up into chunks to protect against network interruption problems, and integrating with drag-and-drop Web applications.

More: http://news.cnet.com/8301-30685_3-10406064-264.html