[jQuery] help with a simple plugin to roll images

[jQuery] help with a simple plugin to roll images

$.fn.rolly = function(options) {
    var settings = {
        speed: 'fast',
        delay: 10000
    }
    if(options)
        $.extend(settings, options);
    $.rolly.rollover(settings);
};
$.rolly = function() {}
$.rolly.rollover = function (settings) {
    $(this).children().get(0).animate( { width: 'hide', opacity: 'hide'
}, settings.speed).appendTo(this).show(settings.delay);
}
this doesn't work ... everything I tried didn't work... help!
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