<!--

var IMAGE_DIR = "./images/top/";
var IMG_COUNT = 8;	// 画像ファイルの個数です。

// 使用する画像を全て読み込む
function preloadImages(){
	for(var i=0; i < IMG_COUNT; i++){
		var imgObj = new Image();
		imgObj.src =  IMAGE_DIR + "top_mainimage" + i + ".jpg";
	}
}
preloadImages();


function getUrlTopImage(){
	work = Math.floor(Math.random() * IMG_COUNT);
	return IMAGE_DIR + "top_mainimage" + work + ".jpg";
}

$(function(){

	function changeImages(){
		do{
			url_top_img = getUrlTopImage();
		}while(document.getElementById('top_image').title == url_top_img);

		document.getElementById('top_image').src = url_top_img;
		document.getElementById('top_image').title = url_top_img;
		swapInImages();
	}

	function swapOutImages(){
		$("#topImage").fadeOut(1500, changeImages);
	}

	function swapInImages(){
		$("#topImage").fadeIn(1500, function(){
			clearTimeout(timer);
			timer = setTimeout(swapOutImages, 2500); 
		});
	}

	var timer = setTimeout(swapOutImages, 2500);
/*
	function changeImages(){
		do{
			url_top_img = getUrlTopImage();
		}while(document.getElementById('top_image').title == url_top_img);

		document.getElementById('top_image').src = url_top_img;
		document.getElementById('top_image').title = url_top_img;
		$("#topImage").fadeIn(1500);
	}

	function swapImages(){
		$("#topImage").fadeOut(1500, changeImages);
	}

	setInterval(swapImages, 5000);
*/
});

//-->