(function ($) {
    $.fn.nivoSlider = function (options) {
        var settings = $.extend({}, $.fn.nivoSlider.defaults, options)
        return this.each(function () {
            var vars = {
                currentSlide: 0,
                currentImage: '',
                totalSlides: 0,
                randAnim: '',
                running: false,
                paused: false,
                stop: false
            }
            var slider = $(this)
            slider.data('nivo:vars', vars)
            slider.css('position', 'relative')
            slider.addClass('nivoSlider')
            var kids = slider.children()
            kids.each(function () {
                var child = $(this)
                var link = ''
                if (!child.is('img')) {
                    if (child.is('a')) {
                        child.addClass('nivo-imageLink')
                        link = child
                    }
                    child = child.find('img:first')
                }
                var childWidth = child.width()
                if (childWidth == 0) childWidth = child.attr('width')
                var childHeight = child.height()
                if (childHeight == 0) childHeight = child.attr('height')
                if (childWidth > slider.width()) {
                    slider.width(childWidth)
                }
                if (childHeight > slider.height()) {
                    slider.height(childHeight)
                }
                if (link != '') {
                    link.css('display', 'none')
                }
                child.css('display', 'none')
                vars.totalSlides++
            })
            if (settings.startSlide > 0) {
                if (settings.startSlide >= vars.totalSlides) settings.startSlide = vars.totalSlides - 1
                vars.currentSlide = settings.startSlide
            }
            if ($(kids[vars.currentSlide]).is('img')) {
                vars.currentImage = $(kids[vars.currentSlide])
            } else {
                vars.currentImage = $(kids[vars.currentSlide]).find('img:first')
            }
            if ($(kids[vars.currentSlide]).is('a')) {
                $(kids[vars.currentSlide]).css('display', 'block')
            }
            slider.css('background', 'url(' + vars.currentImage.attr('src') + ') no-repeat')
            for (var i = 0; i < settings.slices; i++) {
                var sliceWidth = Math.round(slider.width() / settings.slices)
                if (i == settings.slices - 1) {
                    slider.append(
$('<div class="nivo-slice"></div>').css({ left: (sliceWidth * i) + 'px', width: (slider.width() - (sliceWidth * i)) + 'px' })
)
                } else {
                    slider.append(
$('<div class="nivo-slice"></div>').css({ left: (sliceWidth * i) + 'px', width: sliceWidth + 'px' })
)
                } 
            }
            slider.append(
$('<div class="nivo-caption"><p></p></div>').css({ display: 'none', opacity: settings.captionOpacity })
)
            if (vars.currentImage.attr('title') != '') {
                $('.nivo-caption p', slider).html(vars.currentImage.attr('title'))
                $('.nivo-caption', slider).fadeIn(settings.animSpeed)
            }
            var timer = 0
            if (!settings.manualAdvance && kids.length > 1) {
                timer = setInterval(function () { nivoRun(slider, kids, settings, false); }, settings.pauseTime)
            }
            if (settings.directionNav) {
                slider.append('<div class="nivo-directionNav"><a class="nivo-prevNav">Prev</a><a class="nivo-nextNav">Next</a></div>')
                if (settings.directionNavHide) {
                    $('.nivo-directionNav', slider).hide()
                    slider.hover(function () {
                        $('.nivo-directionNav', slider).show()
                    }, function () {
                        $('.nivo-directionNav', slider).hide()
                    })
                }
                $('a.nivo-prevNav', slider).live('click', function () {
                    if (vars.running) return false
                    clearInterval(timer)
                    timer = ''
                    vars.currentSlide -= 2
                    nivoRun(slider, kids, settings, 'prev')
                })
                $('a.nivo-nextNav', slider).live('click', function () {
                    if (vars.running) return false
                    clearInterval(timer)
                    timer = ''
                    nivoRun(slider, kids, settings, 'next')
                })
            }
            if (settings.controlNav) {
                var nivoWrapper = $('<div class="nivo-controlNav"></div>')
                var nivoControl = $('<ul></ul>')
                nivoWrapper.append(nivoControl)
                slider.parent().parent().append(nivoWrapper)
                for (var i = 0; i < kids.length; i++) {
                    var pre = vars.currentImage
                    vars.currentImage = $(kids[i])
                    if (settings.controlNavThumbs) {
                        var child = kids.eq(i)
                        if (!child.is('img')) {
                            child = child.find('img:first')
                        }
                        if (settings.controlNavThumbsFromRel) {
                            nivoControl.append('<a class="nivo-control" rel="' + i + '"><img src="' + child.attr('rel') + '" alt="" /></a>')
                        } else {
                            nivoControl.append('<a class="nivo-control" rel="' + i + '"><img src="' + child.attr('src').replace(settings.controlNavThumbsSearch, settings.controlNavThumbsReplace) + '" alt="" /></a>')
                        }
                    } else {
                        nivoControl.append('<li><a class="nivo-control" rel="' + i + '"><span>' + vars.currentImage.find('span.hidden').text() + '</span></a><span class="excerpt">' + vars.currentImage.find('p').text() + ' <a href="' + vars.currentImage.find('a').attr('href') + '">Devamę &gt;&gt;</a></span></li>')
                    }
                    vars.currentImage = pre
                }
                $('.nivo-controlNav a.nivo-control:eq(' + vars.currentSlide + ')').addClass('active')
                $('.nivo-controlNav ul li:eq(' + vars.currentSlide + ')').addClass('first').addClass('active')
                $('.nivo-controlNav a').live('click', function () {
                    if (vars.running) return false
                    if ($(this).hasClass('active')) return false
                    clearInterval(timer)
                    timer = ''
                    slider.css('background', 'url(' + vars.currentImage.attr('src') + ') no-repeat')
                    vars.currentSlide = $(this).attr('rel') - 1
                    nivoRun(slider, kids, settings, 'control')
                })
            }
            if (settings.keyboardNav) {
                $(window).keypress(function (event) {
                    if (event.keyCode == '37') {
                        if (vars.running) return false
                        clearInterval(timer)
                        timer = ''
                        vars.currentSlide -= 2
                        nivoRun(slider, kids, settings, 'prev')
                    }
                    if (event.keyCode == '39') {
                        if (vars.running) return false
                        clearInterval(timer)
                        timer = ''
                        nivoRun(slider, kids, settings, 'next')
                    }
                })
            }
            if (settings.pauseOnHover) {
                slider.hover(function () {
                    vars.paused = true
                    clearInterval(timer)
                    timer = ''
                }, function () {
                    vars.paused = false
                    if (timer == '' && !settings.manualAdvance) {
                        timer = setInterval(function () { nivoRun(slider, kids, settings, false); }, settings.pauseTime)
                    }
                })
            }
            slider.bind('nivo:animFinished', function () {
                vars.running = false
                $(kids).each(function () {
                    if ($(this).is('a')) {
                        $(this).css('display', 'none')
                    }
                })
                if ($(kids[vars.currentSlide]).is('a')) {
                    $(kids[vars.currentSlide]).css('display', 'block')
                }
                if (timer == '' && !vars.paused && !settings.manualAdvance) {
                    timer = setInterval(function () { nivoRun(slider, kids, settings, false); }, settings.pauseTime)
                }
                settings.afterChange.call(this)
            })
        })
        function nivoRun(slider, kids, settings, nudge) {
            var vars = slider.data('nivo:vars')
            if ((!vars || vars.stop) && !nudge) return false
            settings.beforeChange.call(this)
            if (!nudge) {
                slider.css('background', 'url(' + vars.currentImage.attr('src') + ') no-repeat')
            } else {
                if (nudge == 'prev') {
                    slider.css('background', 'url(' + vars.currentImage.attr('src') + ') no-repeat')
                }
                if (nudge == 'next') {
                    slider.css('background', 'url(' + vars.currentImage.attr('src') + ') no-repeat')
                } 
            }
            vars.currentSlide++
            if (vars.currentSlide == vars.totalSlides) {
                vars.currentSlide = 0
                settings.slideshowEnd.call(this)
            }
            if (vars.currentSlide < 0) vars.currentSlide = (vars.totalSlides - 1)
            if ($(kids[vars.currentSlide]).is('img')) {
                vars.currentImage = $(kids[vars.currentSlide])
            } else {
                vars.currentImage = $(kids[vars.currentSlide]).find('img:first')
            }
            if (settings.controlNav) {
                $('.nivo-controlNav ul li.active').animate({ height: 42 }, 500)
                $('.nivo-controlNav ul li.active').removeClass('active')
                $('.nivo-controlNav a').removeClass('active')
                $('.nivo-controlNav a.nivo-control:eq(' + vars.currentSlide + ')').addClass('active')
                $('.nivo-controlNav ul li:eq(' + vars.currentSlide + ')').addClass('active')
                $('.nivo-controlNav ul li.active').animate({ height: 132 }, 480)
            }
            if (vars.currentImage.attr('title') != '') {
                if ($('.nivo-caption', slider).css('display') == 'block') {
                    $('.nivo-caption p', slider).fadeOut(settings.animSpeed, function () {
                        $(this).html(vars.currentImage.attr('title'))
                        $(this).fadeIn(settings.animSpeed)
                    })
                } else {
                    $('.nivo-caption p', slider).html(vars.currentImage.attr('title'))
                }
                $('.nivo-caption', slider).fadeIn(settings.animSpeed)
            } else {
                $('.nivo-caption', slider).fadeOut(settings.animSpeed)
            }
            var i = 0
            $('.nivo-slice', slider).each(function () {
                var sliceWidth = Math.round(slider.width() / settings.slices)
                $(this).css({ height: '0px', opacity: '0',
                    background: 'url(' + vars.currentImage.attr('src') + ') no-repeat -' + ((sliceWidth + (i * sliceWidth)) - sliceWidth) + 'px 0%'
                })
                i++
            })
            if (settings.effect == 'random') {
                var anims = new Array("sliceDownRight", "sliceDownLeft", "sliceUpRight", "sliceUpLeft", "sliceUpDown", "sliceUpDownLeft", "fold", "fade")
                vars.randAnim = anims[Math.floor(Math.random() * (anims.length + 1))]
                if (vars.randAnim == undefined) vars.randAnim = 'fade'
            }
            if (settings.effect.indexOf(',') != -1) {
                var anims = settings.effect.split(',')
                vars.randAnim = $.trim(anims[Math.floor(Math.random() * anims.length)])
            }
            vars.running = true
            if (settings.effect == 'sliceDown' || settings.effect == 'sliceDownRight' || vars.randAnim == 'sliceDownRight' ||
settings.effect == 'sliceDownLeft' || vars.randAnim == 'sliceDownLeft') {
                var timeBuff = 0
                var i = 0
                var slices = $('.nivo-slice', slider)
                if (settings.effect == 'sliceDownLeft' || vars.randAnim == 'sliceDownLeft') slices = $('.nivo-slice', slider).reverse()
                slices.each(function () {
                    var slice = $(this)
                    slice.css('top', '0px')
                    if (i == settings.slices - 1) {
                        setTimeout(function () {
                            slice.animate({ height: '100%', opacity: '1.0' }, settings.animSpeed, '', function () { slider.trigger('nivo:animFinished'); })
                        }, (100 + timeBuff))
                    } else {
                        setTimeout(function () {
                            slice.animate({ height: '100%', opacity: '1.0' }, settings.animSpeed)
                        }, (100 + timeBuff))
                    }
                    timeBuff += 50
                    i++
                })
            }
            else if (settings.effect == 'sliceUp' || settings.effect == 'sliceUpRight' || vars.randAnim == 'sliceUpRight' ||
settings.effect == 'sliceUpLeft' || vars.randAnim == 'sliceUpLeft') {
                var timeBuff = 0
                var i = 0
                var slices = $('.nivo-slice', slider)
                if (settings.effect == 'sliceUpLeft' || vars.randAnim == 'sliceUpLeft') slices = $('.nivo-slice', slider).reverse()
                slices.each(function () {
                    var slice = $(this)
                    slice.css('bottom', '0px')
                    if (i == settings.slices - 1) {
                        setTimeout(function () {
                            slice.animate({ height: '100%', opacity: '1.0' }, settings.animSpeed, '', function () { slider.trigger('nivo:animFinished'); })
                        }, (100 + timeBuff))
                    } else {
                        setTimeout(function () {
                            slice.animate({ height: '100%', opacity: '1.0' }, settings.animSpeed)
                        }, (100 + timeBuff))
                    }
                    timeBuff += 50
                    i++
                })
            }
            else if (settings.effect == 'sliceUpDown' || settings.effect == 'sliceUpDownRight' || vars.randAnim == 'sliceUpDown' ||
settings.effect == 'sliceUpDownLeft' || vars.randAnim == 'sliceUpDownLeft') {
                var timeBuff = 0
                var i = 0
                var v = 0
                var slices = $('.nivo-slice', slider)
                if (settings.effect == 'sliceUpDownLeft' || vars.randAnim == 'sliceUpDownLeft') slices = $('.nivo-slice', slider).reverse()
                slices.each(function () {
                    var slice = $(this)
                    if (i == 0) {
                        slice.css('top', '0px')
                        i++
                    } else {
                        slice.css('bottom', '0px')
                        i = 0
                    }
                    if (v == settings.slices - 1) {
                        setTimeout(function () {
                            slice.animate({ height: '100%', opacity: '1.0' }, settings.animSpeed, '', function () { slider.trigger('nivo:animFinished'); })
                        }, (100 + timeBuff))
                    } else {
                        setTimeout(function () {
                            slice.animate({ height: '100%', opacity: '1.0' }, settings.animSpeed)
                        }, (100 + timeBuff))
                    }
                    timeBuff += 50
                    v++
                })
            }
            else if (settings.effect == 'fold' || vars.randAnim == 'fold') {
                var timeBuff = 0
                var i = 0
                $('.nivo-slice', slider).each(function () {
                    var slice = $(this)
                    var origWidth = slice.width()
                    slice.css({ top: '0px', height: '100%', width: '0px' })
                    if (i == settings.slices - 1) {
                        setTimeout(function () {
                            slice.animate({ width: origWidth, opacity: '1.0' }, settings.animSpeed, '', function () { slider.trigger('nivo:animFinished'); })
                        }, (100 + timeBuff))
                    } else {
                        setTimeout(function () {
                            slice.animate({ width: origWidth, opacity: '1.0' }, settings.animSpeed)
                        }, (100 + timeBuff))
                    }
                    timeBuff += 50
                    i++
                })
            }
            else if (settings.effect == 'fade' || vars.randAnim == 'fade') {
                var i = 0
                $('.nivo-slice', slider).each(function () {
                    $(this).css('height', '100%')
                    if (i == settings.slices - 1) {
                        $(this).animate({ opacity: '1.0' }, (settings.animSpeed * 2), '', function () { slider.trigger('nivo:animFinished'); })
                    } else {
                        $(this).animate({ opacity: '1.0' }, (settings.animSpeed * 2))
                    }
                    i++
                })
            } 
        } 
    }
    $.fn.nivoSlider.defaults = {
        effect: 'random',
        slices: 15,
        animSpeed: 500,
        pauseTime: 6000,
        startSlide: 0,
        directionNav: false,
        directionNavHide: false,
        controlNav: true,
        controlNavThumbs: false,
        controlNavThumbsFromRel: false,
        controlNavThumbsSearch: '.jpg',
        controlNavThumbsReplace: '_thumb.jpg',
        keyboardNav: true,
        pauseOnHover: true,
        manualAdvance: false,
        captionOpacity: 0.8,
        beforeChange: function () { },
        afterChange: function () { },
        slideshowEnd: function () { } 
    }
    $.fn.reverse = [].reverse
})(jQuery)