function rangeRandom(num1,num2)	{
	if((num1 - num2) > 0)	{
		var big = num1
		var small = num2
	} else	{
		var big = num2
		var small = num1
	}
	var range = big - small + 1
	var number = Math.floor(Math.random()*range) + small
	return(number)
}

var randomNo = rangeRandom(1,3)

function randomImg()	{

	if(randomNo == "1"){
	tag = "<img src= 'img/photo_1.png' alt='いつも新しい風を吹かせていたい' width='696' height='223' border='0'>"
	}if(randomNo == "2"){
	tag = "<img src='img/photo_2.png' alt='いつも新しい風を吹かせていたい' width='696' height='223' border='0'>"
	}if(randomNo == "3"){
	tag = "<img src='img/photo_3.png' alt='いつも新しい風を吹かせていたい' width='696' height='223' border='0'>"
	}
	document.write(tag)
}