oxjs/demos/fileinput/js/fileinput.js

Ox.load('UI', function() {

    //Ox.Theme('modern');

    Ox.FileInput({
            maxFiles: 1,
            width: 256
        })
        .css({
            position: 'absolute',
            left: '16px',
            top: '16px'
        })
        .appendTo(Ox.$body);

    Ox.FileButton({
            title: 'Select Files...',
            width: 256
        })
        .bindEvent({
            click: function(data) {
                this.options({disabled: true});
                Ox.FileInput({
                        value: data.files,
                        width: 256
                    })
                    .css({
                        position: 'absolute',
                        left: '16px',
                        top: '80px'
                    })
                    .appendTo(Ox.$body);
            }
        })
        .css({
            position: 'absolute',
            left: '16px',
            top: '48px'
        })
        .appendTo(Ox.$body);

});