$(function(){
	strImgSrc = $("#main-image img").attr('src');
	dateObject = new Date();
	nowHours = dateObject.getHours();
	if(nowHours < 5 ){
		imgNo = 4; // 夜
	}else if(nowHours < 11){
		imgNo = 1; // 朝
	}else if(nowHours < 17){
		imgNo = 2; // 昼
	}else if(nowHours < 21){
		imgNo = 3; // 夕
	}else{
		imgNo = 4; // 夜
	}
	$("#main-image img").attr('src',strImgSrc.replace("image1",'image'+imgNo));
	$("#main-image").css('display','block');
	
	$('.gallery a').lightBox({fixedNavigation:true});

});