var Random_Number;//変数宣言　乱数

function Image_Disp(){
	Random_Number = Math.ceil(Math.random() * 5);
	if(Random_Number == 0)Random_Number = 1;	//Random_Number=0だった場合、1を代入
	if(Random_Number < 10) Random_Number = "0" + Random_Number;	//Random_Number=0だった場合、1を代入
	document.Random_Image.src = "./top/" + Random_Number + ".jpg";	//イメージ格納
}