// shuffle
Array.prototype.shuffle = function() {
    var i = this.length;
    while(i){
        var j = Math.floor(Math.random()*i);
        var t = this[--i];
        this[i] = this[j];
        this[j] = t;
    }
    return this;
}

// Image Rollover
function initRollOverImages() {
	var image_cache = new Object();
	$(".rollover").each(function(i) {
		var imgsrc = this.src;
		var dot = this.src.lastIndexOf('.');
		var imgsrc_over = this.src.substr(0, dot) + '_over' + this.src.substr(dot, 4);
		image_cache[this.src] = new Image();
		image_cache[this.src].src = imgsrc_over;
		$(this).hover(
			function() { this.src = imgsrc_over; },
			function() { this.src = imgsrc; });
	});
}


// Smooth Scroll Setting
jQuery.easing.quart = function (x, t, b, c, d) {
    return -c * ((t=t/d-1)*t*t*t - 1) + b;
};  

// Smooth Scroll
function smoothScroll() {
	$('a[href*=#]').click(function () {
		if (location.pathname.replace(/^\//,'') == this.pathname.replace(/^\//,'') && location.hostname == this.hostname) {
		    $(this).blur();
		    var $target = $(this.hash);
			$target = $target.length && $target || $('[name=' + this.hash.slice(1) +']');
			if ($target.length) {
				var targetOffset = $target.offset().top - 50;
				$('html,body').animate({scrollTop: targetOffset}, 600, 'quart');
				return false;
			}
		}
	});
}

/* -----------------------
	トップページ用
----------------------- */
// 画像取得
function selectImages(){
	var delay = 4000;
	arg = $("#gamescreen li");

	for(var i=0; i<arg.length;i++){
		setTimeout('animation('+ i +')', delay + delay * i);
	}
	
	setTimeout('resetAnimation()', delay + delay * arg.length);
}

// ビジュアルのアニメーション
function animation(num){
	$(arg[num]).fadeIn();
}

// reset
function resetAnimation(){
	
	for(var i=0; i<arg.length-1; i++){
		$(arg[i]).hide();
	}
	$(arg[arg.length-1]).fadeOut();
	selectImages();
}


//////////////////////////////////////////////////////

$(document).ready(function() {

	smoothScroll();
	initRollOverImages();
	
});