/*
 * jQuery Quovolver v1.0 - http://sandbox.sebnitu.com/jquery/quovolver
 *
 * By Sebastian Nitu - Copyright 2009 - All rights reserved
 * 
 */
(function ($) {
    $.fn.quovolver = function (speed, delay) {

        /* Sets default values */
        if (!speed) speed = 500;
        if (!delay) delay = 6000;

        // If "delay" is less than 4 times the "speed", it will break the effect 
        // If that's the case, make "delay" exactly 4 times "speed"
        var quaSpd = (speed * 4);
        if (quaSpd > (delay)) delay = quaSpd;

        // Create the variables needed
        var quote = $(this),
            firstQuo = $(this).filter(':first'),
            lastQuo = $(this).filter(':last'),
            wrapElem = '<div id="quote_wrap"></div>';

        // Wrap the quotes
        $(this).wrapAll(wrapElem);

        // Hide all the quotes, then show the first
        $(this).hide();
        $(firstQuo).show();

        // Set the hight of the wrapper
        $(this).parent().css({
            height: $(firstQuo).height()
        });

        // Where the magic happens
        setInterval(function () {

            // Set required hight and element in variables for animation
            if ($(lastQuo).is(':visible')) {
                var nextElem = $(firstQuo);
                var wrapHeight = $(nextElem).height();
            } else {
                var nextElem = $(quote).filter(':visible').next();
                var wrapHeight = $(nextElem).height();
            }

            // Fadeout the quote that is currently visible
            $(quote).filter(':visible').fadeOut(speed);

            // Set the wrapper to the hight of the next element, then fade that element in
            setTimeout(function () {
                $(quote).parent().animate({
                    height: wrapHeight
                }, speed);
            }, speed);

            if ($(lastQuo).is(':visible')) {
                setTimeout(function () {
                    $(firstQuo).fadeIn(speed * 2);
                }, speed * 2);

            } else {
                setTimeout(function () {
                    $(nextElem).fadeIn(speed);
                }, speed * 2);
            }

        }, delay);

    };
})(jQuery);