/*
 *  m:code
 *  2011.07.10
 */


var imageNo = 1;
var imageMax = 4;
var imageW = 1024;
var imageH = 630;
var count = 0;


$(document).ready(function() {
	for (i = 1; i <= imageMax; i = i +1){
		$("#bgImage" + i).hide();
	}
	$("#bgImage1").fadeIn(2000);
	setInterval("setCount()",1000);
	$(window).bind("resize", resizeAction);
	resizeAction();
});

function setCount() {
	count++;
	if(count == 8){
		count = 0;
		changeImg();
	}
}

function changeImg() {
	$("#bgImage"+imageNo).fadeOut(1000,function() {
		imageNo++;
		if(imageNo > imageMax){
			imageNo = 1;
		}
		resizeAction();
		$("#bgImage"+imageNo).fadeIn(1000);
		return false;
	});
}

function resizeAction() {
	var photoAreaW = $(window).width();
	var photoAreaH = $(window).height();
	if(photoAreaW < 960){
		photoAreaW = 960;
	}
	var zoomSize = (photoAreaH - 140) / imageH;
	for (i = 1; i <= imageMax; i = i +1){
		$("#bgImage" + i).children().width(imageW * zoomSize);
		$("#bgImage" + i).children().height(imageH * zoomSize);
	}
	$("#bgImage").css({left: (photoAreaW - imageW * zoomSize) / 2 });
	if(photoAreaW < imageW * zoomSize){
		$("#bgImage").width( photoAreaW + (((imageW * zoomSize) - photoAreaW) / 2) );
	}else{
		$("#bgImage").width(imageW * zoomSize);
	}
	$("#bgImageWaku").width(imageW * zoomSize - 4);
	$("#bgImageWaku").height(imageH * zoomSize);
	$("#bgImageWaku").css({left: (photoAreaW - imageW * zoomSize) / 2 });
}