xhr.onreadystatechange = function() {
	switch( xhr.readyState ) {
	case 3: // Interactive
	// Do whatever you want to notify the user that the request is processing…
	break;

	case 4: // Completed
	default: // bulletproofing
		if( xhr.status == 200 ) { // successful completion (server sent http OK)
		// do whatever
		} else {	// the server sent an http error code (404 etc)
		// do error reporting
		}
		break;
	} // end switch
} // end anonymous function

xhr.open(<method>, <url>, true );
//The send() function will return immediately
xhr.send(<request parameters>);

// While the request is being processed asynchronously, the status property and responseText are undefined!
status = xhr.status;
response = xhr.responseText;

if( xhr.status == 200 ) { // successful completion (server sent http OK)
// do whatever

xhr.onreadystatechange = function() {
	switch( xhr.readyState ) {
	case 3: // Interactive
	// Do whatever you want to notify the user that the request is processing…
	break;

	case 4: // Completed
	default: // bulletproofing
		if( xhr.status == 200 ) { // successful completion (server sent http OK)
		// do whatever
                    YOUR CODE HERE
		} else {	// the server sent an http error code (404 etc)
		// do error reporting
		}
		break;
	} // end switch
} // end anonymous function

xhr.onreadystatechange = function() {
                switch( xhr.readyState ) {
                    case 3: // Interactive
                        // Do whatever you want to notify the user that the request is processing…
                        break;

                    case 4: // Completed
                    default: // bulletproofing
                        if( xhr.status == 200 ) { // successful completion (server sent http OK)
                            // do whatever
                            if (xhr.responseText) {

I get this for JSON... : o.parseJSON
ReferenceError: o is not defined
message: "o is not defined"
stack: (...)
get stack: function () { [native code] }
set stack: function () { [native code] }
__proto__: Error

// date_default_timezone_set('Europe/Oslo');
            //$namepic = $pic['name'];
            //$urlpic = "../img/gallery/".strval($menucount).$pic['name'];
            //$altpic = $pic['name'];
            //$datepic = date(Y,m,d);

            //$query = $db->prepare("INSERT INTO bilder (name,url,alt,date) VALUES (:name,:url,:alt,:date)");
            //$query->execute(array(':name' => $namepic, ':url' => $urlpic, ':alt' => $altpic, ':date' => $datepic));

XHR finished loading: "http://misjonsprosjektet.org/login/post_file.php". jquery.filedrop.js:300
XMLHttpRequest.sendAsBinary jquery.filedrop.js:300
send