(function($) {

    $.fn.innerfade = function(options) {
        return this.each(function() {   
            $.innerfade(this, options);
        });
    };

    $.innerfade = function(container, options) {
        var settings = {
        	'animationtype':    'fade',
            'speed':            'normal',
            'type':             'sequence',
            'timeout':          2000,
            'containerheight':  'auto',
            'runningclass':     'innerfade',
            'children':         null
        };
        if (options)
            $.extend(settings, options);
        if (settings.children === null)
            var elements = $(container).children();
        else
            var elements = $(container).children(settings.children);
        if (elements.length > 1) {
            $(container).css('position', 'relative').css('height', settings.containerheight).addClass(settings.runningclass);
            for (var i = 0; i < elements.length; i++) {
                $(elements[i]).css('z-index', String(elements.length-i)).css('position', 'absolute').hide();
            };
            if (settings.type == "sequence") {
                setTimeout(function() {
                    $.innerfade.next(elements, settings, 1, 0);
                }, settings.timeout);
                $(elements[0]).show();
            } else if (settings.type == "random") {
            		var last = Math.floor ( Math.random () * ( elements.length ) );
                setTimeout(function() {
                    do { 
												current = Math.floor ( Math.random ( ) * ( elements.length ) );
										} while (last == current );             
										$.innerfade.next(elements, settings, current, last);
                }, settings.timeout);
                $(elements[last]).show();
						} else if ( settings.type == 'random_start' ) {
								settings.type = 'sequence';
								var current = Math.floor ( Math.random () * ( elements.length ) );
								setTimeout(function(){
									$.innerfade.next(elements, settings, (current + 1) %  elements.length, current);
								}, settings.timeout);
								$(elements[current]).show();
						}	else {
							alert('Innerfade-Type must either be \'sequence\', \'random\' or \'random_start\'');
						}
				}
    };

    $.innerfade.next = function(elements, settings, current, last) {
        if (settings.animationtype == 'slide') {
            $(elements[last]).slideUp(settings.speed);
            $(elements[current]).slideDown(settings.speed);
        } else if (settings.animationtype == 'fade') {
            $(elements[last]).fadeOut(settings.speed);
            $(elements[current]).fadeIn(settings.speed, function() {
							removeFilter($(this)[0]);
						});
        } else
            alert('Innerfade-animationtype must either be \'slide\' or \'fade\'');
        if (settings.type == "sequence") {
            if ((current + 1) < elements.length) {
                current = current + 1;
                last = current - 1;
            } else {
                current = 0;
                last = elements.length - 1;
            }
        } else if (settings.type == "random") {
            last = current;
            while (current == last)
                current = Math.floor(Math.random() * elements.length);
        } else
            alert('Innerfade-Type must either be \'sequence\', \'random\' or \'random_start\'');
        setTimeout((function() {
            $.innerfade.next(elements, settings, current, last);
        }), settings.timeout);
    };

})(jQuery);

// **** remove Opacity-Filter in ie ****
function removeFilter(element) {
	if(element.style.removeAttribute){
		element.style.removeAttribute('filter');
	}
}

// キービジュアル
// when the DOM is ready:
$(document).ready(function () {

    changer('div.hikakuBtn', 'div.hikakuBox', 'hikakuBox');
    changer('div.ikkatsuBtn', 'div.ikkatsuBox');

    function changer(hoverSelector, fadeSelector) {
        var $fade = $(fadeSelector)
            , cssImage = null
            , isChrome = (navigator.userAgent + "").match(/chrome/i);
        var speed = {start : 250, end : 250};
        if (isChrome) {
            cssImage = $fade.css('background-image');
            if (cssImage && !cssImage.match(/^url\(/)) {
                cssImage = null;
            }
        }

        $(hoverSelector).hover(function() {
            if ($fade.is(':animated')) {
                $fade.stop(true , true).fadeTo(speed.start, 1, function() {
                    $fade.css('opacity', null).show();
                    if (cssImage) {
                        $fade.css('background-image', cssImage);
                    }
                });
            } else {
                if (cssImage) {
                    $fade.css('background-image', cssImage);
                }
                $fade.fadeIn(speed.start);
            }
        }, function() {
            if ($fade.is(':animated')) {
                $fade.stop(true , true).fadeTo(speed.end, 0, function() {
                    $fade.css('opacity', null).hide();
                });
            } else {
                $fade.fadeOut(speed.end);
            }
        });
    }
});



// ニュース
$(document).ready(
	function(){
		$('#news').innerfade({
			animationtype: 'fade',
			speed: 750,
			timeout: 4000,
			type: 'sequence',
			containerheight: 'auto'
		});
});