/*
* slides, a slideshow plugin for jquery
* intructions: http://slidesjs.com
* by: nathan searles, http://nathansearles.com
* version: 1.1.2
* updated: february 14th, 2011
*/

 (function($) {
    $.fn.slides = function(option) {
        option = $.extend({},
        $.fn.slides.option, option);
        return this.each(function() {
            $('.' + option.container, $(this)).children().wrapall('<div class="slides_control"/>');
            var elem = $(this),
            control = $('.slides_control', elem),
            total = control.children().size(),
            width = control.children().outerwidth(),
            height = control.children().outerheight(),
            start = option.start - 1,
            effect = option.effect.indexof(',') < 0 ? option.effect: option.effect.replace(' ', '').split(',')[0],
            paginationeffect = option.effect.indexof(',') < 0 ? effect: option.effect.replace(' ', '').split(',')[1],
            next = 0,
            prev = 0,
            number = 0,
            current = 0,
            loaded,
            active,
            clicked,
            position,
            direction,
            imageparent;
            if (total < 2) {
                return;
            }
            if (start < 0) {
                start = 0;
            };
            if (start > total) {
                start = total - 1;
            };
            if (option.start) {
                current = start;
            };
            if (option.randomize) {
                control.randomize();
            }
            $('.' + option.container, elem).css({
                overflow: 'hidden',
                position: 'relative'
            });
            control.children().css({
                position: 'absolute',
                top: 0,
                left: control.children().outerwidth(),
                zindex: 0,
                display: 'none'
            });
            control.css({
                position: 'relative',
                width: (width * 3),
                height: height,
                left: -width
            });
            $('.' + option.container, elem).css({
                display: 'block'
            });
            if (option.autoheight) {
                control.children().css({
                    height: 'auto'
                });
                control.animate({
                    height: control.children(':eq(' + start + ')').outerheight()
                },
                option.autoheightspeed);
            }
            if (option.preload && control.find('img').length) {
                $('.' + option.container, elem).css({
                    background: 'url(' + option.preloadimage + ') no-repeat 50% 50%'
                });
                var img = control.find('img:eq(' + start + ')').attr('src') + '?' + (new date()).gettime();
                if ($('img', elem).parent().attr('class') != 'slides_control') {
                    imageparent = control.children(':eq(0)')[0].tagname.tolowercase();
                } else {
                    imageparent = control.find('img:eq(' + start + ')');
                }
                control.find('img:eq(' + start + ')').attr('src', img).load(function() {
                    control.find(imageparent + ':eq(' + start + ')').fadein(option.fadespeed, 
                    function() {
                        $(this).css({
                            zindex: 5
                        });
                        elem.css({
                            background: ''
                        });
                        loaded = true;
                    });
                });
            } else {
                control.children(':eq(' + start + ')').fadein(option.fadespeed, 
                function() {
                    loaded = true;
                });
            }
            if (option.bigtarget) {
                control.children().css({
                    cursor: 'pointer'
                });
                control.children().click(function() {
                    animate('next', effect);
                    return false;
                });
            }
            if (option.hoverpause && option.play) {
                control.children().bind('mouseover', 
                function() {
                    stop();
                });
                control.children().bind('mouseleave', 
                function() {
                    pause();
                });
            }
            if (option.generatenextprev) {
                $('.' + option.container, elem).after('<a href="#" class="' + option.prev + '">prev</a>');
                $('.' + option.prev, elem).after('<a href="#" class="' + option.next + '">next</a>');
            }
            $('.' + option.next, elem).click(function(e) {
                e.preventdefault();
                if (option.play) {
                    pause();
                };
                animate('next', effect);
            });
            $('.' + option.prev, elem).click(function(e) {
                e.preventdefault();
                if (option.play) {
                    pause();
                };
                animate('prev', effect);
            });
            if (option.generatepagination) {
                elem.append('<ul class=' + option.paginationclass + '></ul>');
                control.children().each(function() {
                    $('.' + option.paginationclass, elem).append('<li><a href="#' + number + '">' + (number + 1) + '</a></li>');
                    number++;
                });
            } else {
                $('.' + option.paginationclass + ' li a', elem).each(function() {
                    $(this).attr('href', '#' + number);
                    number++;
                });
            }
            $('.' + option.paginationclass + ' li:eq(' + start + ')', elem).addclass('current');
            $('.' + option.paginationclass + ' li a', elem).click(function() {
                if (option.play) {
                    pause();
                };
                clicked = $(this).attr('href').match('[^#/]+$');
                if (current != clicked) {
                    animate('pagination', paginationeffect, clicked);
                }
                return false;
            });
            $('a.link', elem).click(function() {
                if (option.play) {
                    pause();
                };
                clicked = $(this).attr('href').match('[^#/]+$') - 1;
                if (current != clicked) {
                    animate('pagination', paginationeffect, clicked);
                }
                return false;
            });
            if (option.play) {
                playinterval = setinterval(function() {
                    animate('next', effect);
                },
                option.play);
                elem.data('interval', playinterval);
            };
            function stop() {
                clearinterval(elem.data('interval'));
            };
            function pause() {
                if (option.pause) {
                    cleartimeout(elem.data('pause'));
                    clearinterval(elem.data('interval'));
                    pausetimeout = settimeout(function() {
                        cleartimeout(elem.data('pause'));
                        playinterval = setinterval(function() {
                            animate("next", effect);
                        },
                        option.play);
                        elem.data('interval', playinterval);
                    },
                    option.pause);
                    elem.data('pause', pausetimeout);
                } else {
                    stop();
                }
            };
            function animate(direction, effect, clicked) {
                if (!active && loaded) {
                    active = true;
                    switch (direction) {
                    case 'next':
                        prev = current;
                        next = current + 1;
                        next = total === next ? 0: next;
                        position = width * 2;
                        direction = -width * 2;
                        current = next;
                        break;
                    case 'prev':
                        prev = current;
                        next = current - 1;
                        next = next === -1 ? total - 1: next;
                        position = 0;
                        direction = 0;
                        current = next;
                        break;
                    case 'pagination':
                        next = parseint(clicked, 10);
                        prev = $('.' + option.paginationclass + ' li.current a', elem).attr('href').match('[^#/]+$');
                        if (next > prev) {
                            position = width * 2;
                            direction = -width * 2;
                        } else {
                            position = 0;
                            direction = 0;
                        }
                        current = next;
                        break;
                    }
                    if (effect === 'fade') {
                        option.animationstart();
                        if (option.crossfade) {
                            control.children(':eq(' + next + ')', elem).css({
                                zindex: 10
                            }).fadein(option.fadespeed, 
                            function() {
                                if (option.autoheight) {
                                    control.animate({
                                        height: control.children(':eq(' + next + ')', elem).outerheight()
                                    },
                                    option.autoheightspeed, 
                                    function() {
                                        control.children(':eq(' + prev + ')', elem).css({
                                            display: 'none',
                                            zindex: 0
                                        });
                                        control.children(':eq(' + next + ')', elem).css({
                                            zindex: 0
                                        });
                                        option.animationcomplete(next + 1);
                                        active = false;
                                    });
                                } else {
                                    control.children(':eq(' + prev + ')', elem).css({
                                        display: 'none',
                                        zindex: 0
                                    });
                                    control.children(':eq(' + next + ')', elem).css({
                                        zindex: 0
                                    });
                                    option.animationcomplete(next + 1);
                                    active = false;
                                }
                            });
                        } else {
                            option.animationstart();
                            control.children(':eq(' + prev + ')', elem).fadeout(option.fadespeed, 
                            function() {
                                if (option.autoheight) {
                                    control.animate({
                                        height: control.children(':eq(' + next + ')', elem).outerheight()
                                    },
                                    option.autoheightspeed, 
                                    function() {
                                        control.children(':eq(' + next + ')', elem).fadein(option.fadespeed);
                                    });
                                } else {
                                    control.children(':eq(' + next + ')', elem).fadein(option.fadespeed, 
                                    function() {
                                        if ($.browser.msie) {
                                            $(this).get(0).style.removeattribute('filter');
                                        }
                                    });
                                }
                                option.animationcomplete(next + 1);
                                active = false;
                            });
                        }
                    } else {
                        control.children(':eq(' + next + ')').css({
                            left: position,
                            display: 'block'
                        });
                        if (option.autoheight) {
                            option.animationstart();
                            control.animate({
                                left: direction,
                                height: control.children(':eq(' + next + ')').outerheight()
                            },
                            option.slidespeed, 
                            function() {
                                control.css({
                                    left: -width
                                });
                                control.children(':eq(' + next + ')').css({
                                    left: width,
                                    zindex: 5
                                });
                                control.children(':eq(' + prev + ')').css({
                                    left: width,
                                    display: 'none',
                                    zindex: 0
                                });
                                option.animationcomplete(next + 1);
                                active = false;
                            });
                        } else {
                            option.animationstart();
                            control.animate({
                                left: direction
                            },
                            option.slidespeed, 
                            function() {
                                control.css({
                                    left: -width
                                });
                                control.children(':eq(' + next + ')').css({
                                    left: width,
                                    zindex: 5
                                });
                                control.children(':eq(' + prev + ')').css({
                                    left: width,
                                    display: 'none',
                                    zindex: 0
                                });
                                option.animationcomplete(next + 1);
                                active = false;
                            });
                        }
                    }
                    if (option.pagination) {
                        $('.' + option.paginationclass + ' li.current', elem).removeclass('current');
                        $('.' + option.paginationclass + ' li:eq(' + next + ')', elem).addclass('current');
                    }
                }
            };
        });
    };
    $.fn.slides.option = {
        preload: false,
        preloadimage: '/img/loading.gif',
        container: 'slides_container',
        generatenextprev: false,
        next: 'next',
        prev: 'prev',
        pagination: true,
        generatepagination: true,
        paginationclass: 'pagination',
        fadespeed: 350,
        slidespeed: 350,
        start: 1,
        effect: 'slide',
        crossfade: false,
        randomize: false,
        play: 0,
        pause: 0,
        hoverpause: false,
        autoheight: false,
        autoheightspeed: 350,
        bigtarget: false,
        animationstart: function() {},
        animationcomplete: function() {}
    };
    $.fn.randomize = function(callback) {
        function randomizeorder() {
            return (math.round(math.random()) - 0.5);
        }
        return ($(this).each(function() {
            var $this = $(this);
            var $children = $this.children();
            var childcount = $children.length;
            if (childcount > 1) {
                $children.hide();
                var indices = [];
                for (i = 0; i < childcount; i++) {
                    indices[indices.length] = i;
                }
                indices = indices.sort(randomizeorder);
                $.each(indices, 
                function(j, k) {
                    var $child = $children.eq(k);
                    var $clone = $child.clone(true);
                    $clone.show().appendto($this);
                    if (callback !== undefined) {
                        callback($child, $clone);
                    }
                    $child.remove();
                });
            }
        }));
    };
})(jquery);