/**
 * pgwslideshow - version 2.0
 *
 * copyright 2014, jonathan m. piat
 * http://pgwjs.com - http://pagawa.com
 *
 * released under the gnu gplv3 license - http://opensource.org/licenses/gpl-3.0
 */
;
(function ($) {
    $.fn.pgwslideshow = function (options) {

        var defaults = {
            mainclassname: 'pgwslideshow',
            transitioneffect: 'sliding',
            displaylist: true,
            displaycontrols: true,
            touchcontrols: true,
            autoslide: false,
            beforeslide: false,
            afterslide: false,
            maxheight: null,
            adaptiveduration: 200,
            transitionduration: 500,
            intervalduration: 3000
        };

        if (this.length == 0) {
            return this;
        } else if (this.length > 1) {
            this.each(function () {
                $(this).pgwslideshow(options);
            });
            return this;
        }

        var pgwslideshow = this;
        pgwslideshow.plugin = this;
        pgwslideshow.config = {};
        pgwslideshow.data = [];
        pgwslideshow.currentslide = 0;
        pgwslideshow.slidecount = 0;
        pgwslideshow.resizeevent = null;
        pgwslideshow.intervalevent = null;
        pgwslideshow.touchfirstposition = null;
        pgwslideshow.touchlistlastposition = false;
        pgwslideshow.window = $(window);

        // init
        var init = function () {

            // merge user options with the default configuration
            pgwslideshow.config = $.extend({}, defaults, options);

            // setup
            setup();

            // check list
            if (pgwslideshow.config.displaylist) {
                checklist();
            }

            // resize trigger
            pgwslideshow.window.resize(function () {
                cleartimeout(pgwslideshow.resizeevent);
                pgwslideshow.resizeevent = settimeout(function () {
                    setsizeclass();

                    var maxheight = pgwslideshow.plugin.find('.ps-current > ul > li.elt_' + pgwslideshow.currentslide + ' img').height();
                    updateheight(maxheight);

                    if (pgwslideshow.config.displaylist) {
                        checklist();
                        checkselecteditem();
                    }
                }, 100);
            });

            // activate interval
            if (pgwslideshow.config.autoslide) {
                activateinterval();
            }

            return true;
        };

        // update the current height
        var updateheight = function (height, animate) {

            // check maxheight
            if (pgwslideshow.config.maxheight) {
                if (height + pgwslideshow.plugin.find('.ps-list').height() > pgwslideshow.config.maxheight) {
                    height = pgwslideshow.config.maxheight - pgwslideshow.plugin.find('.ps-list').height();
                }
            }

            if (typeof pgwslideshow.plugin.find('.ps-current').animate == 'function') {
                pgwslideshow.plugin.find('.ps-current').stop().animate({
                    height: height
                }, pgwslideshow.config.adaptiveduration, function () {
                    if (pgwslideshow.config.maxheight) {
                        pgwslideshow.plugin.find('.ps-current > ul > li img').css('max-height', height + 'px');
                    }
                });
            } else {
                pgwslideshow.plugin.find('.ps-current').css('height', height);

                if (pgwslideshow.config.maxheight) {
                    pgwslideshow.plugin.find('.ps-current > ul > li img').css('max-height', height + 'px');
                }
            }

            return true;
        };

        // set list width
        var setlistwidth = function () {
            var listwidth = 0;

            // the plugin must be visible for a correct calculation
            pgwslideshow.plugin.show();

            pgwslideshow.plugin.find('.ps-list > ul > li').show().each(function () {
                listwidth += $(this).width();
            });

            pgwslideshow.plugin.find('.ps-list > ul').width(listwidth);
            return true;
        }

        // set size class
        var setsizeclass = function () {
            if (pgwslideshow.plugin.width() <= 480) {
                pgwslideshow.plugin.addclass('narrow').removeclass('wide');
            } else {
                pgwslideshow.plugin.addclass('wide').removeclass('narrow');
            }

            return true;
        };

        // setup
        var setup = function () {

            // create container
            pgwslideshow.plugin.removeclass('pgwslideshow').removeclass(pgwslideshow.config.mainclassname);
            pgwslideshow.plugin.wrap('<div class="ps-list"></div>');
            pgwslideshow.plugin = pgwslideshow.plugin.parent();

            pgwslideshow.plugin.wrap('<div class="' + pgwslideshow.config.mainclassname + '"></div>');
            pgwslideshow.plugin = pgwslideshow.plugin.parent();

            pgwslideshow.plugin.prepend('<div class="ps-current"><ul></ul><span class="ps-caption"></span></div>');
            pgwslideshow.slidecount = pgwslideshow.plugin.find('.ps-list > ul > li').length;

            if (pgwslideshow.slidecount == 0) {
                throw new error('pgwslideshow - no slider item has been found');
                return false;
            }

            // prev / next icons
            if (pgwslideshow.slidecount > 1) {

                // slider controls
                if (pgwslideshow.config.displaycontrols) {
                    pgwslideshow.plugin.find('.ps-current').prepend('<span class="ps-prev"><span class="ps-previcon"></span></span>');
                    pgwslideshow.plugin.find('.ps-current').append('<span class="ps-next"><span class="ps-nexticon"></span></span>');
                    pgwslideshow.plugin.find('.ps-current .ps-prev').click(function () {
                        pgwslideshow.previousslide();
                    });
                    pgwslideshow.plugin.find('.ps-current .ps-next').click(function () {
                        pgwslideshow.nextslide();
                    });
                }

                // touch controls for current image
                if (pgwslideshow.config.touchcontrols) {

                    pgwslideshow.plugin.find('.ps-current').on('touchstart', function (e) {
                        try {
                            if (e.originalevent.touches[0].clientx && pgwslideshow.touchfirstposition == null) {
                                pgwslideshow.touchfirstposition = e.originalevent.touches[0].clientx;
                            }
                        } catch (e) {
                            pgwslideshow.touchfirstposition = null;
                        }
                    });

                    pgwslideshow.plugin.find('.ps-current').on('touchmove', function (e) {
                        try {
                            if (e.originalevent.touches[0].clientx && pgwslideshow.touchfirstposition != null) {
                                if (e.originalevent.touches[0].clientx > (pgwslideshow.touchfirstposition + 50)) {
                                    pgwslideshow.touchfirstposition = null;
                                    pgwslideshow.previousslide();
                                } else if (e.originalevent.touches[0].clientx < (pgwslideshow.touchfirstposition - 50)) {
                                    pgwslideshow.touchfirstposition = null;
                                    pgwslideshow.nextslide();
                                }
                            }
                        } catch (e) {
                            pgwslideshow.touchfirstposition = null;
                        }
                    });

                    pgwslideshow.plugin.find('.ps-current').on('touchend', function (e) {
                        pgwslideshow.touchfirstposition = null;
                    });
                }
            }

            // get slideshow elements
            var elementid = 1;
            pgwslideshow.plugin.find('.ps-list > ul > li').each(function () {
                var element = getelement($(this));
                element.id = elementid;
                pgwslideshow.data.push(element);

                $(this).addclass('elt_' + element.id);
                $(this).wrapinner('<span class="ps-item' + (elementid == 1 ? ' ps-selected' : '') + '"></span>');

                // set element in the current list
                var currentelement = $('<li class="elt_' + elementid + '"></li>');
                var picdescription = element.picdescription;
                if (element.image) {
                    currentelement.html('<img src="' + element.image + '" alt="' + (element.title ? element.title : '') + '">'+ element.description);
                } else if (element.thumbnail) {
                    currentelement.html('<img src="' + element.thumbnail + '" alt="' + (element.title ? element.title : '') + '">' + '<div class="txtdot">' + picdescription + '</div>'+ element.description);
                }

                if (element.link) {
                    currentelement.html('<a href="' + element.link + '"' + (element.linktarget ? ' target="' + element.linktarget + '"' : '') + '>' + currentelement.html() + '</a>');
                }


                pgwslideshow.plugin.find('.ps-current > ul').append(currentelement);

                $(this).css('cursor', 'pointer').click(function (event) {
                    event.preventdefault();
                    displayelement(element.id);
                });

                elementid++;
            });

            // set list elements
            if (pgwslideshow.config.displaylist) {
                setlistwidth();

                pgwslideshow.plugin.find('.ps-list').prepend('<span class="ps-prev"><span class="ps-previcon"></span></span>');
                pgwslideshow.plugin.find('.ps-list').append('<span class="ps-next"><span class="ps-nexticon"></span></span>');
                pgwslideshow.plugin.find('.ps-list').show();
            } else {
                pgwslideshow.plugin.find('.ps-list').hide();
            }

            // attach slide events
            if (pgwslideshow.config.autoslide) {
                pgwslideshow.plugin.on('mouseenter', function () {
                    clearinterval(pgwslideshow.intervalevent);
                    pgwslideshow.intervalevent = null;
                }).on('mouseleave', function () {
                    activateinterval();
                });
            }

            // disable current elements
            pgwslideshow.plugin.find('.ps-current > ul > li').hide();

            // display the first element
            displayelement(1);

            // set the first height
            pgwslideshow.plugin.find('.ps-current > ul > li.elt_1 img').on('load', function () {
                setsizeclass();

                var maxheight = pgwslideshow.plugin.find('.ps-current > ul > li.elt_1 img').height();
                updateheight(maxheight);
            });

            // enable slideshow
            setsizeclass();
            pgwslideshow.plugin.show();

            return true;
        };

        // get element
        var getelement = function (obj) {
            var element = {};

            // get link
            var elementlink = obj.find('a').attr('href');
            if ((typeof elementlink != 'undefined') && (elementlink != '')) {
                element.link = elementlink;
                var elementlinktarget = obj.find('a').attr('target');
                if ((typeof elementlinktarget != 'undefined') && (elementlinktarget != '')) {
                    element.linktarget = elementlinktarget;
                }
            }

            // get image 
            var elementthumbnail = obj.find('img').attr('src');
            if ((typeof elementthumbnail != 'undefined') && (elementthumbnail != '')) {
                element.thumbnail = elementthumbnail;
            }

            var elementimage = obj.find('img').attr('data-large-src');
            if ((typeof elementimage != 'undefined') && (elementimage != '')) {
                element.image = elementimage;
            }

            // get title 
            var elementtitle = obj.find('img').attr('alt');
            if ((typeof elementtitle != 'undefined') && (elementtitle != '')) {
                element.title = elementtitle;
            }

            // get description
            var elementdescription = obj.find('img').attr('data-description');
            if ((typeof elementdescription != 'undefined') && (elementdescription != '')) {
                element.description = elementdescription;
                console.log(elementdescription);
            }

            // get description
            var pictxtdescription = obj.find('img').attr('data-text');
            if ((typeof pictxtdescription != 'undefined') && (pictxtdescription != '')) {
                element.picdescription = pictxtdescription;
            }


            return element;
        };

        // finish element
        var finishelement = function (element) {

            // element caption
            var elementtext = '';
            if (element.title) {
                elementtext += '<b>' + element.title + '</b>';
            }

            if (element.description) {
                if (elementtext != '') elementtext += '<br>';
                elementtext += element.description;
            }

            if (elementtext != '') {
                if (element.link) {
                    elementtext = '<a href="' + element.link + '"' + (element.linktarget ? ' target="' + element.linktarget + '"' : '') + '>' + elementtext + '</a>';
                }

                if (typeof pgwslideshow.plugin.find('.ps-caption').fadein == 'function') {
                    pgwslideshow.plugin.find('.ps-caption').html(elementtext);
                    pgwslideshow.plugin.find('.ps-caption').fadein(pgwslideshow.config.transitionduration / 2);
                } else {
                    pgwslideshow.plugin.find('.ps-caption').html(elementtext);
                    pgwslideshow.plugin.find('.ps-caption').show();
                }
            }

            // update list items
            pgwslideshow.plugin.find('.ps-list > ul > li .ps-item').removeclass('ps-selected');
            pgwslideshow.plugin.find('.ps-list > ul > li.elt_' + element.id + ' .ps-item').addclass('ps-selected');

            // check selected item
            if (pgwslideshow.config.displaylist) {
                checklist();
                checkselecteditem();
            }

            // slideshow controls
            if (pgwslideshow.config.displaycontrols) {
                if (typeof pgwslideshow.plugin.find('.ps-current > .ps-prev').fadein == 'function') {
                    pgwslideshow.plugin.find('.ps-current > .ps-prev, .ps-current > .ps-next').fadein(pgwslideshow.config.transitionduration / 2);
                } else {
                    pgwslideshow.plugin.find('.ps-current > .ps-prev, .ps-current > .ps-next').show();
                }
            }

            // after slide
            if (typeof pgwslideshow.config.afterslide == 'function') {
                pgwslideshow.config.afterslide(element.id);
            }

            // set the container height
            var maxheight = pgwslideshow.plugin.find('.ps-current .elt_' + element.id + ' img').height();
            updateheight(maxheight, true);

            return true;
        }

        // fade an element
        var fadeelement = function (element) {
            var elementcontainer = pgwslideshow.plugin.find('.ps-current > ul');

            elementcontainer.find('li').not('.elt_' + pgwslideshow.currentslide).not('.elt_' + element.id).each(function () {
                if (typeof $(this).stop == 'function') {
                    $(this).stop();
                }
                $(this).css('position', '').css('z-index', 1).hide();
            });

            // current element
            if (pgwslideshow.currentslide > 0) {
                var currentelement = elementcontainer.find('.elt_' + pgwslideshow.currentslide);

                if (typeof currentelement.animate != 'function') {
                    currentelement.animate = function (css, duration, callback) {
                        currentelement.css(css);
                        if (callback) {
                            callback();
                        }
                    };
                }

                if (typeof currentelement.stop == 'function') {
                    currentelement.stop();
                }

                currentelement.css('position', 'absolute').animate({
                    opacity: 0,
                }, pgwslideshow.config.transitionduration, function () {
                    currentelement.css('position', '').css('z-index', 1).hide();
                });
            }

            // update current id
            pgwslideshow.currentslide = element.id;

            // next element
            var nextelement = elementcontainer.find('.elt_' + element.id);

            if (typeof nextelement.animate != 'function') {
                nextelement.animate = function (css, duration, callback) {
                    nextelement.css(css);
                    if (callback) {
                        callback();
                    }
                };
            }

            if (typeof nextelement.stop == 'function') {
                nextelement.stop();
            }

            nextelement.css('position', 'absolute').show().animate({
                opacity: 1,
            }, pgwslideshow.config.transitionduration, function () {
                nextelement.css('position', '').css('z-index', 2).css('display', 'block');
                finishelement(element);
            });

            return true;
        }

        // slide an element
        var slideelement = function (element, direction) {
            var elementcontainer = pgwslideshow.plugin.find('.ps-current > ul');

            if (typeof direction == 'undefined') {
                direction = 'left';
            }

            if (pgwslideshow.currentslide == 0) {
                elementcontainer.find('.elt_1').css({
                    position: '',
                    left: '',
                    opacity: 1,
                    'z-index': 2
                }).show();
                pgwslideshow.plugin.find('.ps-list > li.elt_1').css('opacity', '1');
                finishelement(element);

            } else {

                if (pgwslideshow.transitioninprogress) {
                    return false;
                }

                pgwslideshow.transitioninprogress = true;

                // get direction details
                var elementwidth = elementcontainer.width();

                if (direction == 'left') {
                    var elementdest = -elementwidth;
                    var nextorigin = elementwidth;
                } else {
                    var elementdest = elementwidth;
                    var nextorigin = -elementwidth;
                }

                var currentelement = elementcontainer.find('.elt_' + pgwslideshow.currentslide);

                if (typeof currentelement.animate != 'function') {
                    currentelement.animate = function (css, duration, callback) {
                        currentelement.css(css);
                        if (callback) {
                            callback();
                        }
                    };
                }

                currentelement.css('position', 'absolute').animate({
                    left: elementdest,
                }, pgwslideshow.config.transitionduration, function () {
                    currentelement.css('position', '').css('z-index', 1).css('left', '').css('opacity', 0).hide();
                });

                // next element
                var nextelement = elementcontainer.find('.elt_' + element.id);

                if (typeof nextelement.animate != 'function') {
                    nextelement.animate = function (css, duration, callback) {
                        nextelement.css(css);
                        if (callback) {
                            callback();
                        }
                    };
                }

                nextelement.css('position', 'absolute').css('left', nextorigin).css('opacity', 1).show().animate({
                    left: 0,
                }, pgwslideshow.config.transitionduration, function () {
                    nextelement.css('position', '').css('left', '').css('z-index', 2).show();
                    pgwslideshow.transitioninprogress = false;
                    finishelement(element);
                });
            }

            // update current id
            pgwslideshow.currentslide = element.id;

            return true;
        }

        // display current element
        var displayelement = function (elementid, apicontroller, direction) {

            if (elementid == pgwslideshow.currentslide) {
                return false;
            }

            var element = pgwslideshow.data[elementid - 1];

            if (typeof element == 'undefined') {
                throw new error('pgwslideshow - the element ' + elementid + ' is undefined');
                return false;
            }

            if (typeof direction == 'undefined') {
                direction = 'left';
            }

            // before slide
            if (typeof pgwslideshow.config.beforeslide == 'function') {
                pgwslideshow.config.beforeslide(elementid);
            }

            /*  if (typeof pgwslideshow.plugin.find('.ps-caption').fadeout == 'function') {
             pgwslideshow.plugin.find('.ps-caption, .ps-prev, .ps-next').fadeout(pgwslideshow.config.transitionduration / 2);
             } else {
             pgwslideshow.plugin.find('.ps-caption, .ps-prev, .ps-next').hide();
             }  */

            // choose the transition effect
            if (pgwslideshow.config.transitioneffect == 'sliding') {
                slideelement(element, direction);
            } else {
                fadeelement(element);
            }

            // reset interval to avoid a half interval after an api control
            if (typeof apicontroller != 'undefined' && pgwslideshow.config.autoslide) {
                activateinterval();
            }

            return true;
        };

        // activate interval
        var activateinterval = function () {
            clearinterval(pgwslideshow.intervalevent);

            if (pgwslideshow.slidecount > 1 && pgwslideshow.config.autoslide) {
                pgwslideshow.intervalevent = setinterval(function () {
                    if (pgwslideshow.currentslide + 1 <= pgwslideshow.slidecount) {
                        var nextitem = pgwslideshow.currentslide + 1;
                    } else {
                        var nextitem = 1;
                    }
                    displayelement(nextitem);
                }, pgwslideshow.config.intervalduration);
            }

            return true;
        };

        // check slide list
        var checklist = function () {
            if (!pgwslideshow.config.displaylist) return false;

            // refresh list width
            setlistwidth();

            var containerobject = pgwslideshow.plugin.find('.ps-list');
            var containerwidth = containerobject.width();
            var listobject = pgwslideshow.plugin.find('.ps-list > ul');
            var listwidth = listobject.width();

            if (listwidth > containerwidth) {
                listobject.css('margin', '0');

                var marginleft = parseint(listobject.css('margin-left'));
                var marginright = parseint(listobject.css('margin-right'));
                containerwidth -= (marginleft + marginright);

                // left button
                containerobject.find('.ps-prev').show().unbind('click').click(function () {
                    var oldposition = parseint(listobject.css('left'));
                    var newposition = oldposition + containerwidth;

                    if (oldposition == 0) {
                        newposition = -(listwidth - containerwidth);
                    } else if (newposition > 0) {
                        newposition = 0;
                    }

                    if (typeof listobject.animate == 'function') {
                        listobject.animate({
                            left: newposition
                        }, pgwslideshow.config.transitionduration);
                    } else {
                        listobject.css('left', newposition);
                    }
                });

                // right button
                containerobject.find('.ps-next').show().unbind('click').click(function () {
                    var oldposition = parseint(listobject.css('left'));
                    var newposition = oldposition - containerwidth;
                    var maxposition = -(listwidth - containerwidth);

                    if (oldposition == maxposition) {
                        newposition = 0;
                    } else if (newposition < maxposition) {
                        newposition = maxposition;
                    }

                    if (typeof listobject.animate == 'function') {
                        listobject.animate({
                            left: newposition
                        }, pgwslideshow.config.transitionduration);
                    } else {
                        listobject.css('left', newposition);
                    }
                });

                // touch controls for the list
                if (pgwslideshow.config.touchcontrols) {

                    pgwslideshow.plugin.find('.ps-list > ul').on('touchmove', function (e) {
                        try {
                            if (e.originalevent.touches[0].clientx) {
                                var lastposition = (pgwslideshow.touchlistlastposition == false ? 0 : pgwslideshow.touchlistlastposition);
                                nbpixels = (pgwslideshow.touchlistlastposition == false ? 1 : math.abs(lastposition - e.originalevent.touches[0].clientx));
                                pgwslideshow.touchlistlastposition = e.originalevent.touches[0].clientx;

                                var touchdirection = '';
                                if (lastposition > e.originalevent.touches[0].clientx) {
                                    touchdirection = 'left';
                                } else if (lastposition < e.originalevent.touches[0].clientx) {
                                    touchdirection = 'right';
                                }
                            }

                            var oldposition = parseint(listobject.css('left'));

                            if (touchdirection == 'left') {
                                var containerwidth = containerobject.width();
                                var listwidth = listobject.width();

                                var marginleft = parseint(listobject.css('margin-left'));
                                var marginright = parseint(listobject.css('margin-right'));
                                containerwidth -= (marginleft + marginright);

                                var maxposition = -(listwidth - containerwidth);
                                var newposition = oldposition - nbpixels;

                                if (newposition > maxposition) {
                                    listobject.css('left', newposition);
                                }

                            } else if (touchdirection == 'right') {
                                var newposition = oldposition + nbpixels;

                                if (newposition < 0) {
                                    listobject.css('left', newposition);
                                } else {
                                    listobject.css('left', 0);
                                }
                            }

                        } catch (e) {
                            pgwslideshow.touchlistlastposition = false;
                        }
                    });

                    pgwslideshow.plugin.find('.ps-list > ul').on('touchend', function (e) {
                        pgwslideshow.touchlistlastposition = false;
                    });
                }

            } else {
                var marginleft = parseint((containerwidth - listwidth) / 2);
                listobject.css('left', 0).css('margin-left', marginleft);
                containerobject.find('.ps-prev').hide();
                containerobject.find('.ps-next').hide();
                pgwslideshow.plugin.find('.ps-list > ul').unbind('touchstart touchmove touchend');
            }

            return true;
        };

        // check the visibility of the selected item
        var checkselecteditem = function () {
            var containerwidth = pgwslideshow.plugin.find('.ps-list').width();
            var listobject = pgwslideshow.plugin.find('.ps-list > ul');
            var listwidth = listobject.width();

            var marginleft = parseint(listobject.css('margin-left'));
            var marginright = parseint(listobject.css('margin-right'));
            containerwidth -= (marginleft + marginright);

            var visiblezonestart = math.abs(parseint(listobject.css('left')));
            var visiblezoneend = visiblezonestart + containerwidth;
            var elementzonestart = pgwslideshow.plugin.find('.ps-list .ps-selected').position().left;
            var elementzoneend = elementzonestart + pgwslideshow.plugin.find('.ps-list .ps-selected').width();

            if ((elementzonestart < visiblezonestart) || (elementzoneend > visiblezoneend) || (listwidth > containerwidth && visiblezoneend > elementzoneend)) {
                var maxposition = -(listwidth - containerwidth);

                if (-elementzonestart < maxposition) {
                    listobject.css('left', maxposition);
                } else {
                    listobject.css('left', -elementzonestart);
                }
            }

            return true;
        };

        // start auto slide
        pgwslideshow.startslide = function () {
            pgwslideshow.config.autoslide = true;
            activateinterval();
            return true;
        };

        // stop auto slide
        pgwslideshow.stopslide = function () {
            pgwslideshow.config.autoslide = false;
            clearinterval(pgwslideshow.intervalevent);
            return true;
        };

        // get current slide
        pgwslideshow.getcurrentslide = function () {
            return pgwslideshow.currentslide;
        };

        // get slide count
        pgwslideshow.getslidecount = function () {
            return pgwslideshow.slidecount;
        };

        // display slide
        pgwslideshow.displayslide = function (itemid) {
            displayelement(itemid, true);
            return true;
        };

        // next slide
        pgwslideshow.nextslide = function () {
            if (pgwslideshow.currentslide + 1 <= pgwslideshow.slidecount) {
                var nextitem = pgwslideshow.currentslide + 1;
            } else {
                var nextitem = 1;
            }
            displayelement(nextitem, true, 'left');
            return true;
        };

        // previous slide
        pgwslideshow.previousslide = function () {
            if (pgwslideshow.currentslide - 1 >= 1) {
                var previousitem = pgwslideshow.currentslide - 1;
            } else {
                var previousitem = pgwslideshow.slidecount;
            }
            displayelement(previousitem, true, 'right');
            return true;
        };

        // destroy slider
        pgwslideshow.destroy = function (soft) {
            clearinterval(pgwslideshow.intervalevent);

            if (typeof soft != 'undefined') {
                pgwslideshow.plugin.find('.ps-list > ul > li').each(function () {
                    $(this).attr('style', null).removeclass().unbind('click');
                    $(this).html($(this).find('span').html());
                });

                pgwslideshow.plugin.find('.ps-current').remove();
                pgwslideshow.plugin.find('.ps-list').find('.ps-prev, .ps-next').remove();
                pgwslideshow.plugin.find('.ps-list > ul').addclass(pgwslideshow.config.mainclassname).attr('style', '');
                pgwslideshow.plugin.find('.ps-list > ul').unwrap().unwrap();
                pgwslideshow.hide();

            } else {
                pgwslideshow.parent().parent().remove();
            }

            pgwslideshow.plugin = null;
            pgwslideshow.data = [];
            pgwslideshow.config = {};
            pgwslideshow.currentslide = 0;
            pgwslideshow.slidecount = 0;
            pgwslideshow.resizeevent = null;
            pgwslideshow.intervalevent = null;
            pgwslideshow.touchfirstposition = null;
            pgwslideshow.window = null;

            return true;
        };

        // reload slider
        pgwslideshow.reload = function (newoptions) {
            pgwslideshow.destroy(true);

            pgwslideshow = this;
            pgwslideshow.plugin = this;
            pgwslideshow.window = $(window);
            pgwslideshow.plugin.show();

            // merge new options with the default configuration
            pgwslideshow.config = $.extend({}, defaults, newoptions);

            // setup
            setup();

            // resize listener
            pgwslideshow.window.resize(function () {
                cleartimeout(pgwslideshow.resizeevent);
                pgwslideshow.resizeevent = settimeout(function () {
                    setsizeclass();

                    var maxheight = pgwslideshow.plugin.find('.ps-current > ul > li.elt_' + pgwslideshow.currentslide + ' img').css('max-height', '').height();
                    updateheight(maxheight);

                    if (pgwslideshow.config.displaylist) {
                        checklist();
                        checkselecteditem();
                    }
                }, 100);
            });

            // activate interval
            if (pgwslideshow.config.autoslide) {
                activateinterval();
            }

            return true;
        };

        // slideshow initialization
        init();

        return this;
    }
})(window.zepto || window.jquery);