function aisatu(){
	today = new Date();
	//alert("今日は"+ today);
	theDate = today.getDate();
	theMonth = today.getMonth() + 1;
	var insert = "";
	if(theMonth == 12){
		//alert("月"+ theMonth);
		if(theDate >= 25){
			//alert("日付"+ theDate);
			img1 = "shinnen3.gif";
			alt = "年末年始の営業";
			insert = 1;
		}
	}else if(theMonth == 1){
		if(theDate <= 6){
			img1 = "shinnen3.gif";
			img2 = "shinnen4.gif";
			alt = "新年のご挨拶";
			insert = 2;
		}
	}
	if(insert == 1){
		insField = '<img src="./images/' + img1 + '" alt="' + alt +'" width="740" height="110">';
		var result = document.getElementById("shinImg");
		result.innerHTML = insField;
	}else if(insert == 2){
		insField = '<img src="./images/' + img2 + '" alt="' + alt +'" width="740" height="80">';
		var result = document.getElementById("shinImg");
		result.innerHTML = insField;
	}

}