Andrea Giammarchi has taken the new Safari 4 implementation of multi input file upload functionality and has written an article on how to write the client and server to enable thisHe shares the new XHR implementation: PLAIN TEXT JAVASCRIPT:   var xhr = new XMLHttpRequest,     upload = xhr.upload; upload.onload = function(){     console.log("Data fully sent"); }; xhr.open("post", page, true); xhr.send(binaryData);   and the delves [...].