function bak()
	{
	history.back();
	}

function ImageChange()
	{
	image1 = new Image();image1.src="img/gaikan01.jpg";
	image2 = new Image();image2.src="img/jikan.gif";
	image3 = new Image();image3.src="img/kamoku.gif";
	image4 = new Image();image4.src="img/senmon.gif";
	image5 = new Image();image5.src="img/gaikan02.jpg";
	clearTimeout(timerID);
	if(document.anime.src==image1.src)
		document.anime.src=image2.src;
	else if(document.anime.src==image2.src)
		document.anime.src=image3.src;
	else if(document.anime.src==image3.src)
		document.anime.src=image4.src;
	else if(document.anime.src==image4.src)
		document.anime.src=image5.src;
	else document.anime.src=image1.src;
	timerID=setTimeout("ImageChange()",3000);
	}