/*
 * 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);