/**
* Sliderman.js
* Version: 1.3.0
* Author: Taras Ozarko (tozarko@gmail.com)
*
* (c) 2010-2011 Devtrix. All rights reserved. http://www.devtrix.net/sliderman/
**/
var pause = false;
var Sliderman = new function () {
    var Sliderman = this;

    function foreach(o, f) { for (var k in o) if (o.hasOwnProperty(k) && f(k, o[k], o)) return; }
    function is_array(a) { return a && a.constructor == Array; }
    function is_string(a) { return typeof (a) == 'string'; }
    function is_function(a) { return typeof (a) == 'function'; }
    function now() { return (new Date()).getTime(); }

    function random(l) {
        r = Math.round(Math.random() * (l + 1));
        if (r > 0 && r < l + 1) r--;
        else r = random(l);
        return r;
    } //random

    function addElementEvent(o, e, f) {
        var of = o[e];
        o[e] = !is_function(of) ? f : function () { of(); f(); };
    } //addElementEvent

    var _loadImage = [];
    function loadImage(s, f, always_show_loading) {
        var l = function () { if (_loadImage[s]) { if (f) f(s); } else { var i = newElement('IMG'); i.onload = function () { _loadImage[s] = true; if (f) f(s); }; new function () { i.src = s; }; } }
        if (always_show_loading) setTimeout(l, typeof (always_show_loading) == 'number' ? always_show_loading : 1000);
        else l();
    } //loadImage

    function array_copy(a) {
        if (is_array(a)) var r = [];
        else var r = {};
        foreach(a, function (i) { r[i] = typeof (a[i]) != 'object' ? a[i] : array_copy(a[i]); });
        return r;
    } //array_copy

    function eq(a, b) {
        return String(a).replace(/^\s+/, '').replace(/\s+$/, '').toLowerCase() == String(b).replace(/^\s+/, '').replace(/\s+$/, '').toLowerCase();
    } //eq

    function array_search(arr, a, b) {
        var result = false;
        if (!b) {
            foreach(arr, function (i) {
                if (eq(arr[i], b)) {
                    result = i;
                    return true;
                }
            });
        }
        else {
            foreach(arr, function (i) {
                if (eq(arr[i][a], b)) {
                    result = i;
                    return true;
                }
            });
        }
        return result;
    } //array_search

    function validateOption(a, b) {
        b = b.split(',');
        var result;
        foreach(b, function (i) {
            result = b[i];
            if (eq(a, b[i])) return true;
        });
        return result;
    } //validateOption

    var setOpacity;
    function setOpacityInit() {
        if (setOpacity) return;
        var p, b = document.body, s = b.style;
        if (is_string(s.opacity)) p = 'opacity';
        else if (is_string(s.MozOpacity)) p = 'MozOpacity';
        else if (is_string(s.KhtmlOpacity)) p = 'KhtmlOpacity';
        else if (b.filters && navigator.appVersion.match(/MSIE ([\d.]+);/)[1] >= 5.5) p = 'filter';
        if (p == 'filter') {
            setOpacity = function (style, v) {
                if (v > 1) v = 1;
                else if (v < 0) v = 0;
                style[p] = "alpha(opacity=" + Math.round(v * 100) + ")";
            }
        } else if (p) {
            setOpacity = function (style, v) {
                if (v > 1) v = 1;
                else if (v < 0) v = 0;
                style[p] = v.toFixed(2);
            }
        } else setOpacity = ef
    } //setOpacityInit

    function setStyle(style, property, value) {
        if (is_string(value)) style[property] = value;
        else if (property == 'clip') style[property] = 'rect(' + Math.round(value[0]) + 'px, ' + Math.round(value[1]) + 'px, ' + Math.round(value[2]) + 'px, ' + Math.round(value[3]) + 'px)';
        else if (property == 'opacity') setOpacity(style, value);
        else style[property] = Math.round(value) + 'px';
    } //setStyle
    function setStyles(style, properties) {
        foreach(properties, function (property) {
            setStyle(style, property, properties[property]);
        });
    }
    function hide(style) { style.display = 'none'; }
    function show(style) { style.display = ''; }

    function newElement(tagName, styles) {
        var e = document.createElement(tagName);
        if (styles) setStyles(e.style, styles);
        return e;
    } //newElement

    var definedObjects = [];
    function defineObject(t, o) {
        if (!is_array(definedObjects[t])) definedObjects[t] = [];
        if (o) {
            var n = -1, i;
            if (o.name) {
                if (i = array_search(definedObjects[t], 'name', o.name)) n = i;
            } else o.name = 'Sliderman-nameless-object-' + definedObjects[t].length;
            if (n >= 0) definedObjects[t][n] = o;
            else definedObjects[t].push(o);
        }
    } //defineObjects
    Sliderman.easing = function (e) { defineObject('easing', e); }
    Sliderman.order = function (e) { defineObject('order', e); }
    Sliderman.effect = function (e) { defineObject('effect', EffectObject(e)); }

    function getDefinedObjects(t) {
        return definedObjects[t];
    } //getDefinedObjects

    function getDefinedObject(t, n) {
        var a = getDefinedObjects(t), i;
        return is_array(a) && (i = array_search(a, 'name', n)) ? a[i] : false;
    } //getDefinedObject

    var _EffectObject = 0;
    function EffectObject(a) {
        if (typeof (a) != 'object') a = {};
        if (!a.name) a.name = 'Sliderman-nameless-effect-' + _EffectObject++;
        a.interval = parseInt(a.interval) || 40; a.duration = parseInt(a.duration) || 200; a.delay = parseInt(a.delay) || 0;
        a.cols = parseInt(a.cols) || 1; a.rows = parseInt(a.rows) || 1; a.count = a.cols * a.rows;
        a.top = a.top ? true : false; a.right = a.right ? true : false; a.bottom = a.bottom ? true : false; a.left = a.left ? true : false;
        a.fade = a.fade ? true : false; a.zoom = a.zoom ? true : false; a.move = a.move ? true : false, a.chess = a.chess ? true : false;
        a.easing = getDefinedObject('easing', a.easing) ? a.easing : 'swing';
        a.order = getDefinedObject('order', a.order) ? a.order : 'random'; a.order_cache_id = [a.order, a.cols, a.rows, a.road, a.reverse].join(',');
        a.cache_id = [a.interval, a.duration, a.delay, a.top, a.right, a.bottom, a.left, a.fade, a.zoom, a.move, a.chess, a.order_cache_id].join(',');
        a.cacheId = function () { return a.cache_id + (a.order == 'random' ? now() : ''); }
        a.frames_count = Math.round(a.duration / a.interval); a.easingArr = getEasing(a);
        a.P = []; a.pieces = function (w, h) {
            w /= a.cols; h /= a.rows; var wh = w + 'x' + h; if (!a.P[wh]) {
                a.P[wh] = { width: w, height: h };
                for (var c = 0; c < a.cols; c++) for (var r = 0; r < a.rows; r++) a.P[wh][r + ',' + c] = [r * h, c * w + w, r * h + h, c * w];
            } return a.P[wh];
        }
        return a;
    } //EffectObject

    var EffectsArr = [];
    function Effects(parameters) {
        var effect = parameters.effect, display = parameters.display;
        if (parameters.contentmode) effect.zoom = false;
        var cr, piece, r, image, startStylesArr = [], AnimateArr = [], needAnimate = [], AnimateItemsArr = [], styleStart, styleEnd, styleDif;

        var container = newElement('div', { width: display.width, height: display.height, position: 'absolute', top: 0, left: 0, overflow: 'hidden' })
        parameters.container.appendChild(container);

        var pieces = effect.pieces(display.width, display.height);
        var e_top, e_bottom, e_left, e_right;
        var effectsOptStr = effect.cacheId();
        var frameN;
        var orderArr = getOrder(effect);

        if (EffectsArr[effectsOptStr]) {
            startStylesArr = EffectsArr[effectsOptStr].startStylesArr;
            AnimateArr = EffectsArr[effectsOptStr].AnimateArr;
            needAnimate = EffectsArr[effectsOptStr].needAnimate;
        } else {
            for (r = 0; r < effect.rows; r++) for (c = 0; c < effect.cols; c++) {
                cr = r + ',' + c;
                if (effect.chess && orderArr[cr] % 2 == 1) {
                    e_top = effect.bottom; e_bottom = effect.top;
                    e_left = effect.right; e_right = effect.left;
                } else {
                    e_top = effect.top; e_bottom = effect.bottom;
                    e_left = effect.left; e_right = effect.right;
                }

                styleStart = { top: 0, left: 0, opacity: 1, width: display.width, height: display.height, overflow: 'hidden' };
                styleEnd = array_copy(styleStart); piece = array_copy(pieces[cr]);

                if (effect.fade) styleStart.opacity = 0;

                if (e_top && e_bottom) piece[0] = piece[2] = (piece[0] + piece[2]) / 2;
                else if (e_top) piece[2] -= pieces.height;
                else if (e_bottom) piece[0] += pieces.height;
                if (e_left && e_right) piece[1] = piece[3] = (piece[1] + piece[3]) / 2;
                else if (e_left) piece[1] -= pieces.width;
                else if (e_right) piece[3] += pieces.width;

                if (effect.zoom) {
                    styleStart.left = pieces[cr][3];
                    styleStart.top = pieces[cr][0];
                    if (e_left && e_right) styleStart.left += pieces.width / 2;
                    else if (e_right) styleStart.left += pieces.width;
                    else if (!e_left) styleStart.left = 0;
                    if (e_top && e_bottom) styleStart.top += pieces.height / 2;
                    else if (e_bottom) styleStart.top += pieces.height;
                    else if (!e_top) styleStart.top = 0;
                    if (e_left || e_right) piece[1] = piece[3] = 0;
                    if (e_top || e_bottom) piece[0] = piece[2] = 0;
                    styleStart.width = e_left || e_right ? 0 : display.width;
                    styleStart.height = e_top || e_bottom ? 0 : display.height;
                }

                if (effect.move) {
                    if (e_top) {
                        styleStart.top = parseInt(styleStart.top) - pieces.height;
                        piece[0] += pieces.height; piece[2] += pieces.height;
                    }
                    if (e_bottom) {
                        styleStart.top = parseInt(styleStart.top) + pieces.height;
                        piece[0] -= pieces.height; piece[2] -= pieces.height;
                    }
                    if (e_left) {
                        styleStart.left = parseInt(styleStart.left) - pieces.width;
                        piece[1] += pieces.width; piece[3] += pieces.width;
                    }
                    if (e_right) {
                        styleStart.left = parseInt(styleStart.left) + pieces.width;
                        piece[1] -= pieces.width; piece[3] -= pieces.width;
                    }
                }

                styleStart.clip = piece;
                styleEnd.clip = pieces[cr];

                styleDif = [];
                foreach(styleEnd, function (property) {
                    if (styleStart[property].toString() != styleEnd[property].toString()) {
                        styleDif[property] = [];
                        if (property == 'clip') {
                            foreach(styleStart[property], function (n) {
                                styleDif[property][n] = styleEnd[property][n] - styleStart[property][n];
                            });
                        } else styleDif[property] = styleEnd[property] - styleStart[property];
                        needAnimate[cr] = true;
                    }
                });

                startStylesArr[cr] = styleStart; AnimateArr[cr] = [];
                if (effect.delay) for (var n = 0; n < Math.round(orderArr[cr] * effect.delay / effect.interval); n++) AnimateArr[cr].push(null);

                if (!needAnimate[cr]) AnimateArr[cr].push({ display: '' });
                else for (frameN = 1; frameN <= effect.frames_count; frameN++) {
                    var style_c = [];
                    if (frameN == effect.frames_count) style_c = styleEnd;
                    else {
                        foreach(styleDif, function (property) {
                            value = [];
                            if (property == 'clip') {
                                foreach(styleDif[property], function (n) {
                                    value[n] = styleStart[property][n] + styleDif[property][n] * effect.easingArr[frameN]
                                });
                            } else value = styleStart[property] + styleDif[property] * effect.easingArr[frameN]
                            style_c[property] = value;
                        });
                    }
                    AnimateArr[cr].push(style_c);
                }

            } //for
            EffectsArr[effectsOptStr] = { startStylesArr: startStylesArr, AnimateArr: AnimateArr, needAnimate: needAnimate };
        }

        for (r = 0; r < effect.rows; r++) for (c = 0; c < effect.cols; c++) {
            cr = r + ',' + c;
            if (parameters.contentmode) {
                image = newElement('DIV', startStylesArr[cr]);
                image.appendChild(parameters.src.cloneNode(true));
            } else {
                image = newElement('IMG', startStylesArr[cr]);
                image.src = parameters.src;
            }
            var style = image.style;
            style.position = 'absolute';
            container.appendChild(image);
            AnimateItemsArr[cr] = style;
            if (!needAnimate[cr]) hide(AnimateItemsArr[cr]);
        }

        //ANIMATE
        var time_s = now();
        var framesCountAll = 1;
        foreach(AnimateArr, function (index) { framesCountAll = Math.max(AnimateArr[index].length, framesCountAll); });
        var AnimateItem, AnimateItemsComplete = [], timerFuncStatus = true, timerFunc = function () {
            if (timerFuncStatus) {
                var frameC = Math.ceil((now() - time_s) / effect.interval);
                frameC = frameC >= framesCountAll ? framesCountAll - 1 : frameC - 1;
                foreach(AnimateArr, function (index) {
                    AnimateItem = frameC > AnimateArr[index].length - 1 ? AnimateArr[index].length - 1 : frameC;
                    if (AnimateArr[index][AnimateItem] && !AnimateItemsComplete[index + ',' + AnimateItem]) {
                        setStyles(AnimateItemsArr[index], AnimateArr[index][AnimateItem]);
                        AnimateItemsComplete[index + ',' + AnimateItem] = true;
                    }
                });
                if (frameC == framesCountAll - 1) {
                    if (effect.count > 1) {
                        container.innerHTML = '';
                        if (parameters.contentmode) container.appendChild(parameters.src);
                        else container.innerHTML = '<img src="' + parameters.src + '" width="' + display.width + '" height="' + display.height + '" />';
                    }
                    parameters.callback(container);
                    timerFuncStatus = false;
                }
            }
            return timerFuncStatus;
        };
        var animateInterval = setInterval(function () {
            if (!timerFunc()) clearInterval(animateInterval);
        }, effect.interval);

    } //Effects
    function getOrder(effect) {
        var a = [], o, m = 0;
        if (effect.count > 1) {
            o = getDefinedObject('order', effect.order);
            if (!is_array(o.cache)) o.cache = [];
            if (o.nocache || !o.cache[effect.order_cache_id]) {
                a = o.method(effect);
                if (effect.reverse) {
                    foreach(a, function (i, v) { m = Math.max(m, v); });
                    foreach(a, function (i) { a[i] = m - a[i]; });
                }
                o.cache[effect.order_cache_id] = a;
            }
            a = o.cache[effect.order_cache_id];
        } else a['0,0'] = 0;
        return a;
    } //getOrder

    function getEasing(effect) {
        var o = getDefinedObject('easing', effect.easing), i, c = effect.frames_count;
        if (!is_array(o.cache)) o.cache = [];
        if (!o.cache[c]) {
            o.cache[c] = [];
            for (i = 1; i <= c; i++) o.cache[c][i] = o.method(i / c);
        }
        return o.cache[c];
    } //getEasing

    Sliderman.slider = function (parameters) {
        setOpacityInit();


        var Slider = {}, current, previous, prevImg, status = 'free', isHover = false, images = [], descriptions = [], links = [], ef = function () { };
        //EVENTS
        var events = parameters.events, eventCall = events ? function (e) { if (events[e] && is_function(events[e])) events[e](Slider); } : ef;
        var contentmode = parameters.contentmode;

        //SLIDER EFECTS
        var effects = [];
        var previousEffect = -1;
        var addEffect = function (e) {
            if (is_string(e)) {
                e = e.split(',');
                if (e.length == 1) {
                    var globalEffect = getDefinedObject('effect', e[0]);
                    if (globalEffect) addEffect(globalEffect);
                } else for (var i = 0; i < e.length; i++) addEffect(e[i]);
            } else if (e) {
                e = EffectObject(e);
                var effectsId = array_search(effects, 'name', e.name);
                if (!effectsId) effectsId = effects.length;
                effects[effectsId] = array_copy(e);
            }
        } //addEffect
        var getEffect = function () {
            var n = 0;
            if (effects.length > 1) {
                n = random(effects.length);
                if (previousEffect == n) n++;
                n %= effects.length;
                previousEffect = n;
            }
            return effects[n];
        } //getEffect
        if (parameters.effects) {
            if (!is_array(parameters.effects)) parameters.effects = [parameters.effects];
            for (var i = 0; i < parameters.effects.length; i++) addEffect(parameters.effects[i]);
        }
        if (!effects.length) effects = array_copy(getDefinedObjects('effect'));

        //OPTIONS
        var display = parameters.display || {};
        display.width = parameters.width;
        display.height = parameters.height;
        var loading = display.loading || {};
        var description = display.description || null;
        var navigation = display.navigation || null;
        var buttons = display.buttons || null;

        var styleDef = { width: display.width, height: display.height, position: 'absolute', top: 0, left: 0, display: 'block' };

        var mainCont = document.getElementById(parameters.container);
        addElementEvent(mainCont, 'onmouseover', function () {
            isHover = true;
            if (buttons && buttons.hide) show(buttonsCont.style);
            if (description && description.hide && !contentmode) show(descriptionCont.style);
            if (display.pause) autoplay(false);
        });
        addElementEvent(mainCont, 'onmouseout', function () {
            isHover = false;
            if (buttons && buttons.hide) hide(buttonsCont.style);
            if (description && description.hide && !contentmode) hide(descriptionCont.style);
            if (display.pause) autoplay(true);
        });

        //GET CONTENT
        var maps = document.getElementsByTagName('MAP');
        for (var i = 0; i < mainCont.childNodes.length; i++) if (mainCont.childNodes[i].nodeType == 1) {
            if (contentmode) images.push(mainCont.childNodes[i].cloneNode(true));
            else {
                switch (mainCont.childNodes[i].tagName) {
                    case 'A':
                        var img = mainCont.childNodes[i].getElementsByTagName('IMG');
                        if (img.length) {
                            images.push(img[0].src);
                            links[images.length - 1] = mainCont.childNodes[i];
                        } else descriptions[images.length - 1] = mainCont.childNodes[i];
                        break;
                    case 'IMG':
                        images.push(mainCont.childNodes[i].src);
                        if (mainCont.childNodes[i].useMap && maps.length) for (var m = 0; m < maps.length; m++) {
                            if (maps[m].name && mainCont.childNodes[i].useMap.replace(/^[^#]*#/, '') == maps[m].name) links[images.length - 1] = maps[m];
                        }
                        break;
                    case 'MAP': continue; break;
                    default: descriptions[images.length - 1] = mainCont.childNodes[i];
                }
            }
            hide(mainCont.childNodes[i].style);
        }
        if (!contentmode) for (var i = 0; i < images.length; i++) loadImage(images[i]);

        //CONTAINERS
        var sliderCont = newElement('DIV', { width: display.width, height: display.height, position: 'relative' }); mainCont.appendChild(sliderCont);
        var imagesCont = newElement('DIV', styleDef); sliderCont.appendChild(imagesCont);
        partsCont = sliderCont;

        //LINKS
        if (contentmode) var linkUpd = ef;
        else {
            var lnk = newElement('DIV', styleDef); partsCont.appendChild(lnk);
            var linkUpd = function () {
                lnk.innerHTML = ''; value = links[current];
                if (value) {
                    if (value.tagName == 'MAP') {
                        var a = newElement('IMG', styleDef);
                        a.src = images[current]; a.useMap = '#' + value.name;
                    } else {
                        var a = newElement('A', styleDef);
                        a.href = value.href; a.target = value.target;
                    }
                    setStyles(a.style, { opacity: 0, background: '#000000' })
                    a.onfocus = function () { this.blur(); };
                    lnk.appendChild(a);
                }
            }
        }

        //LOADING
        if (contentmode) var showLoading = ef;
        else {
            var loadingCont = newElement('DIV'); partsCont.appendChild(loadingCont);
            if (loading.background) {
                var loadingBgStyle = array_copy(styleDef);
                loadingBgStyle.background = loading.background;
                if (loading.opacity) loadingBgStyle.opacity = loading.opacity;
                loadingCont.appendChild(newElement('DIV', loadingBgStyle));
            }
            if (loading.image) {
                var loadingImgStyle = array_copy(styleDef);
                loadingImgStyle.background = 'url(' + (loading.image) + ') no-repeat center center';
                loadingCont.appendChild(newElement('DIV', loadingImgStyle));
            }
            var showLoading = function (a) {
                if (a) show(loadingCont.style);
                else hide(loadingCont.style);
                status = a ? 'loading' : 'free';
            }
        }

        //DESCRIPTION
        if (description && !contentmode) {
            var descriptionCont = newElement('DIV'); partsCont.appendChild(descriptionCont);
            if (description.hide) hide(descriptionCont.style);

            var descriptionStl = { position: 'absolute', overflow: 'hidden', textAlign: 'left' };
            if (!description) description = [];
            description.position = validateOption(description.position, 'top,left,right,bottom')
            descriptionStl.background = description.background || 'white';
            descriptionStl.opacity = description.opacity || 0.5;
            descriptionStl.width = description.position == 'top' || description.position == 'bottom' ? display.width : description.width || display.width * 0.2;
            descriptionStl.height = description.position == 'left' || description.position == 'right' ? display.height : description.height || display.height * 0.2;
            descriptionStl[description.position == 'bottom' ? 'bottom' : 'top'] = 0;
            descriptionStl[description.position == 'right' ? 'right' : 'left'] = 0;

            var descBg = newElement('DIV', descriptionStl); descriptionCont.appendChild(descBg);
            descriptionStl.opacity = 1; descriptionStl.background = '';
            var desc = newElement('DIV', descriptionStl); descriptionCont.appendChild(desc);

            var descriptionShow = function () {
                desc.innerHTML = '';
                setStyle(descriptionCont.style, 'visibility', 'hidden');
                var value = descriptions[current];
                if (value) {
                    setStyle(descriptionCont.style, 'visibility', 'visible');
                    value = value.cloneNode(true);
                    show(value.style);
                    desc.appendChild(value);
                    if (isHover) show(descriptionCont.style);
                }
            }
        } else var descriptionShow = ef

        //BUTTONS
        if (buttons) {
            var buttonsCont = newElement('DIV'); partsCont.appendChild(buttonsCont);
            if (buttons.hide) hide(buttonsCont.style);
            var btnPrev = newElement('A'); buttonsCont.appendChild(btnPrev);
            btnPrev.href = 'javascript:void(0);';
            var btnNext = btnPrev.cloneNode(true); buttonsCont.appendChild(btnNext);
            btnPrev.onfocus = function () { this.blur(); }
            btnNext.onfocus = function () { this.blur(); }
            btnPrev.onclick = function () { Slider.prev(); }
            btnNext.onclick = function () { Slider.next(); }
            if (buttons.prev.label) btnPrev.innerHTML = is_string(buttons.prev.label) ? buttons.prev.label : 'prev';
            if (buttons.prev.label) btnNext.innerHTML = is_string(buttons.next.label) ? buttons.next.label : 'next';
            if (buttons.prev.className) btnPrev.className = buttons.prev.className;
            if (buttons.next.className) btnNext.className = buttons.next.className;
            if (buttons.opacity || buttons.prev.opacity) setOpacity(btnPrev.style, (document.body.filters && navigator.appVersion.match(/MSIE ([\d.]+);/)[1] < 9) ? 0.4 : (buttons.opacity || buttons.prev.opacity));
            if (buttons.opacity || buttons.next.opacity) setOpacity(btnNext.style, (document.body.filters && navigator.appVersion.match(/MSIE ([\d.]+);/)[1] < 9) ? 0.4 : (buttons.opacity || buttons.next.opacity));
        }

        //NAVIGATION
        if (navigation) {
            var navigationCont = document.getElementById(navigation.container);
            var a;

            if (navigation.prev) {
                a = newElement('A');
                if (navigation.prev.label) a.innerHTML = is_string(navigation.prev.label) ? navigation.prev.label : 'Prev';
                if (navigation.prev.className) a.className = navigation.prev.className;
                a.href = 'javascript:void(0);';
                a.onfocus = function () { this.blur(); };
                a.onclick = function () { Slider.prev(); };
                navigationCont.appendChild(a);
            }

            var navigationLinks = [];
            for (var i = 0; i < images.length; i++) {
                a = newElement('A');
                if (navigation.label) a.innerHTML = is_string(navigation.label) ? navigation.label : i + 1;
                if (navigation.className) a.className = navigation.className;
                a.href = 'javascript:void(0);';
                a.id = parameters.container + '_SliderNavigation' + i;
                a.onfocus = function () { this.blur(); };
                a.onclick = function () { Slider.go(this.id.replace(parameters.container + '_SliderNavigation', '')); };
                navigationLinks.push(a);
                navigationCont.appendChild(a);
            }

            if (navigation.next) {
                a = newElement('A');
                if (navigation.next.label) a.innerHTML = is_string(navigation.next.label) ? navigation.next.label : 'Next';
                if (navigation.next.className) a.className = navigation.next.className;
                a.href = 'javascript:void(0);';
                a.onfocus = function () { this.blur(); };
                a.onclick = function () { Slider.next(); };
                navigationCont.appendChild(a);
            }

            var navigationUpd = function () {
                for (var i = 0; i < navigationLinks.length; i++) navigationLinks[i].className = navigationLinks[i].className.replace(/\bactive\b/g, '');
                navigationLinks[current].className += ' active';
            }
        } else var navigationUpd = ef

        //AUTOPLAY
        var autoplayCount = 0;
        if (display.autoplay) {
            var autoplayTimeout;
            var autoplay = function (a) {
                if (autoplayTimeout) clearTimeout(autoplayTimeout);
                if (a && !((isHover && display.pause) || pause)) autoplayTimeout = setTimeout(display.random ? Slider.random : Slider.next, display.autoplay);
            } //autoplay
        } else var autoplay = ef

        var doEffect = function (src) {
            eventCall('before');
            showLoading(false); status = 'busy'; descriptionShow(); linkUpd(); navigationUpd();
            Effects({ effect: getEffect(), display: display, container: imagesCont, src: src, callback: function (img) {
                if (prevImg) prevImg.parentNode.removeChild(prevImg);
                prevImg = img; status = 'free'; autoplay(true);
                eventCall('after');
            }, contentmode: contentmode
            });
        };

        Slider.random = function () {
            var r = random(images.length);
            return images.length > 1 && r == current ? Slider.random() : Slider.go(r);
        }
        Slider.next = function () {
            var r = Slider.go(current + 1);
            if (display.loop && r) {
                autoplayCount++;
                if (autoplayCount + 1 >= images.length * display.loop) autoplay = ef;
            }
            return r;
        }
        Slider.prev = function () {
            var r = Slider.go(current - 1);
            if (display.loop && r) autoplayCount--;
            return r;
        }
        Slider.go = function (index) {
            index = (images.length + index) % images.length;
            autoplay(false);
            if (status != 'free' || current == index) return autoplay(true) && false;
            previous = current;
            current = index;
            eventCall('loading');
            showLoading(true);
            if (contentmode) doEffect(images[current]);
            else loadImage(images[current], doEffect, display.always_show_loading);
            return true;
        } //go
        Slider.get = function (a) {
            switch (a) {
                case 'length': return images.length; break;
                case 'current': return current; break;
                case 'previous': return previous; break;
                case 'images': return images; break;
                case 'links': return links; break;
                case 'descriptions': return descriptions; break;
            }
        } //get


        if (display.mousewheel) {
            onmousewheel = function (d) {
                if (d > 0) Slider.prev();
                else if (d < 0) Slider.next();
                return true;
            };
            function wheel(event) {
                var d = 0;
                if (!event) event = window.event;
                if (event.wheelDelta) {
                    d = event.wheelDelta / 120;
                    if (window.opera) d = -d;
                } else if (event.detail) d = -event.detail / 3;
                if (d && onmousewheel(d)) {
                    if (event.preventDefault) event.preventDefault();
                    event.returnValue = false;
                }
            } //wheel
            if (mainCont.addEventListener) {
                mainCont.addEventListener("DOMMouseScroll", wheel, false);
                mainCont.addEventListener("mousewheel", wheel, false);
            } else addElementEvent(mainCont, 'onmousewheel', wheel);
        }

        (display.random ? Slider.random : Slider.go)(0);
        return Slider;
    } //Sliderman.slider


}                         //Sliderman

/* predefined easing functions */
Sliderman.easing({name: 'none', method: function(x){return x;}});
Sliderman.easing({name: 'swing', method: function(x){return -Math.cos(x*Math.PI)/2 + 0.5;}});
Sliderman.easing({name: 'wave', method: function(t){return ((Math.cos((1-t)*3*Math.PI+2*Math.PI))*0.5+0.5+t)/2;}});
Sliderman.easing({name: 'bounce', method: function(t){return 1 - Math.abs(Math.cos((1-t)*(2.5+t*t*3)*Math.PI+0.5*Math.PI)*(1-t));}});
/* predefined order functions */
Sliderman.order({name: 'straight', method: function(e){
	var cols = e.cols, rows = e.rows, road = e.road, count = e.count;
	var a = [], i = 0, c = 0, r = 0, cl = cols - 1, rl = rows - 1, il = count - 1, cr;
	for(r = 0; r < rows; r++) for(c = 0; c < cols; c++){cr = r+','+c;
		switch(road){
			case 'BL': a[cr] = il-(c*rows+(rl-r)); break;
			case 'RT': a[cr] = il-(r*cols+(cl-c)); break;
			case 'TL': a[cr] = il-(c*rows+r);
			case 'LT': a[cr] = il-(r*cols+c); break;
			case 'BR': a[cr] = c*rows+r; break;
			case 'LB': a[cr] = r*cols+(cl-c); break;
			case 'TR': a[cr] = c*rows+(rl-r); break;
			default: a[cr] = r*cols+c; break;//'RB'
		}
	}
	return a;
}});
Sliderman.order({name: 'swirl', method: function(e){
	var cols = e.cols, rows = e.rows, road = e.road, count = e.count;
	var a = [], i = 0, c = 0, r = 0, cl = cols - 1, rl = rows - 1, il = count - 1, cr;
	var courses, course = 0;
	switch(road){
		case 'BL': c = cl; r = 0; courses = ['r+', 'c-', 'r-', 'c+']; break;
		case 'RT': c = 0; r = rl; courses = ['c+', 'r-', 'c-', 'r+']; break;
		case 'TL': c = cl; r = rl; courses = ['r-', 'c-', 'r+', 'c+']; break;
		case 'LT': c = cl; r = rl; courses = ['c-', 'r-', 'c+', 'r+']; break;
		case 'BR': c = 0; r = 0; courses = ['r+', 'c+', 'r-', 'c-']; break;
		case 'LB': c = cl; r = 0; courses = ['c-', 'r+', 'c+', 'r-']; break;
		case 'TR': c = 0; r = rl; courses = ['r-', 'c+', 'r+', 'c-']; break;
		default: c = 0; r = 0; courses = ['c+', 'r+', 'c-', 'r-']; break;//'RB'
	}
	i = 0;
	while(i < count){
		cr = r+','+c;
		if(c >= 0 && c < cols && r >= 0 && r < rows && typeof(a[cr]) == 'undefined') a[cr] = i++;
		else switch(courses[course++%courses.length]){case 'c+': c--; break; case 'r+': r--; break; case 'c-': c++; break; case 'r-': r++; break;}
		switch(courses[course%courses.length]){case 'c+': c++; break; case 'r+': r++; break; case 'c-': c--; break; case 'r-': r--; break;}
	}
	return a;
}});
Sliderman.order({name: 'snake', method: function(e){
	var cols = e.cols, rows = e.rows, road = e.road, count = e.count;
	var a = [], i = 0, c = 0, r = 0, cl = cols - 1, rl = rows - 1, il = count - 1, cr;
	var courses, course = 0;
	switch(road){
		case 'BL': c = cl; r = 0; courses = ['r+', 'c-', 'r-', 'c-']; break;
		case 'RT': c = 0; r = rl; courses = ['c+', 'r-', 'c-', 'r-']; break;
		case 'TL': c = cl; r = rl; courses = ['r-', 'c-', 'r+', 'c-']; break;
		case 'LT': c = cl; r = rl; courses = ['c-', 'r-', 'c+', 'r-']; break;
		case 'BR': c = 0; r = 0; courses = ['r+', 'c+', 'r-', 'c+']; break;
		case 'LB': c = cl; r = 0; courses = ['c-', 'r+', 'c+', 'r+']; break;
		case 'TR': c = 0; r = rl; courses = ['r-', 'c+', 'r+', 'c+']; break;
		default: c = 0; r = 0; courses = ['c+', 'r+', 'c-', 'r+']; break;//'RB'
	}
	i = 0;
	while(i < count){cr = r+','+c;
		if(c >= 0 && c < cols && r >= 0 && r < rows && typeof(a[cr]) == 'undefined'){a[cr] = i++;
			switch(courses[course%courses.length]){case 'c+': c++; break; case 'r+': r++; break; case 'c-': c--; break; case 'r-': r--; break;}
		}
		else{
			switch(courses[course++%courses.length]){case 'c+': c--; break; case 'r+': r--; break; case 'c-': c++; break; case 'r-': r++; break;}
			switch(courses[course++%courses.length]){case 'c+': c++; break; case 'r+': r++; break; case 'c-': c--; break; case 'r-': r--; break;}
		}
	}
	return a;
}});
Sliderman.order({name: 'straight_stairs', method: function(e){
	var cols = e.cols, rows = e.rows, road = e.road, count = e.count;
	var a = [], i = 0, c = 0, r = 0, cl = cols - 1, rl = rows - 1, il = count - 1, cr;
	switch(road){
		case 'BL': case 'TR': case 'TL': case 'BR': var C = 0, R = 0; break;
		case 'LB': case 'RT': case 'LT': case 'RB': default: road = 'RB'; var C = cl, R = 0; break;
	}
	c = C; r = R;
	while(i < count){cr = r+','+c;
		if(road.indexOf('T') == 1 || road.indexOf('R') == 1) a[cr] = il - i++;
		else a[cr] = i++;
		switch(road){
			case 'BL': case 'TR': c--; r++; break;
			case 'TL': case 'BR': c++; r--; break;
			case 'LB': case 'RT': c--; r--; break;
			case 'RB': case 'LT': default: c++; r++; break;
		}
		if(c < 0 || r < 0 || c > cl || r > rl){
			switch(road){
				case 'BL': case 'TR': C++; break;
				case 'LB': case 'RT': case 'TL': case 'BR': R++; break;
				case 'RB': case 'LT': default: C--; break;
			}
			if(C < 0 || R < 0 || C > cl || R > rl){
				switch(road){
					case 'BL': case 'TR': C = cl; R++; break;
					case 'TL': case 'BR': R = rl; C++; break;
					case 'LB': case 'RT': R = rl; C--; break;
					case 'RB': case 'LT': default: C = 0; R++; break;
				}
				if(R > rl) R = rl; else if(R < 0) R = 0; else if(C > cl) C = cl; else if(C < 0) C = 0;
			}
			r = R; c = C;
		}
	}
	return a;
}});
Sliderman.order({name: 'square', method: function(effect){
	var cols = effect.cols || 1, rows = effect.rows || 1, arr = [], i = 0, c, r, dc, dr, cr;
	dc = cols < rows ? (rows-cols)/2 : 0; dr = cols > rows ? (cols-rows)/2 : 0; cr = Math.round(Math.max(cols/2, rows/2)) + 1;
	for(c = 0; c < cols; c++) for(r = 0; r < rows; r++) arr[r+','+c] = cr - Math.min(c+1+dc, r+1+dr, cols-c+dc, rows-r+dr);
	return arr;
}});
Sliderman.order({name: 'rectangle', method: function(effect){
	var cols = effect.cols || 1, rows = effect.rows || 1, arr = [], i = 0, c, r, cr;
	cr = Math.round(Math.min(cols/2, rows/2)) + 1;
	for(c = 0; c < cols; c++) for(r = 0; r < rows; r++) arr[r+','+c] = cr - Math.min(c+1, r+1, cols-c, rows-r);
	return arr;
}});
Sliderman.order({name: 'random', method: function(effect){
	var a = [], tmp = [], r, c, i;
	for(r = 0; r < effect.rows; r++) for(c = 0; c < effect.cols; c++) tmp.push(r+','+c);
	tmp.sort(function(a,b){return Math.random() > 0.5;});
	for(i = 0; i < effect.count; i++) a[tmp[i]] = i;
	return a;
}});
Sliderman.order({
	name: 'circle', method: function(effect){
  	var cols = effect.cols || 1, rows = effect.rows || 1, arr = [], i = 0, c, r;
  	var hc = cols/2-0.5, hr = rows/2-0.5;
		for(c = 0; c < cols; c++) for(r = 0; r < rows; r++) arr[r+','+c] = Math.round(Math.sqrt(Math.pow(c-hc, 2)+Math.pow(r-hr, 2)));
		return arr;
	}
});
Sliderman.order({
	name: 'cross', method: function(effect){
  	var cols = effect.cols || 1, rows = effect.rows || 1, arr = [], i = 0, c, r;
  	var hc = cols/2-0.5, hr = rows/2-0.5;
		for(c = 0; c < cols; c++) for(r = 0; r < rows; r++) arr[r+','+c] = Math.round(Math.min(Math.abs(c-hc), Math.abs(r-hr)));
		return arr;
	}
});
Sliderman.order({
	name: 'rectangle_cross', method: function(effect){
  	var cols = effect.cols || 1, rows = effect.rows || 1, arr = [], i = 0, c, r;
  	var hc = cols/2-0.5, hr = rows/2-0.5, cr = Math.max(hc, hr)+1;
		for(c = 0; c < cols; c++) for(r = 0; r < rows; r++) arr[r+','+c] = Math.round(cr-Math.max(hc-Math.abs(c-hc), hr-Math.abs(r-hr)))-1;
		return arr;
	}
});
/* predefined effects */
Sliderman.effect({name: 'fade', fade: true, duration: 400});
Sliderman.effect({name: 'move', left: true, move: true, duration: 400});
Sliderman.effect({name: 'stairs', cols: 7, rows: 5, delay: 30, order: 'straight_stairs', road: 'BL', fade: true});
Sliderman.effect({name: 'blinds', cols: 10, delay: 100, duration: 400, order: 'straight', right: true, zoom: true, fade: true});
Sliderman.effect({name: 'rain', cols: 10, delay: 100, duration: 400, order: 'straight', top: true, fade: true});