//画像ロード

	var img = new Array();
	img[0] = new Image();  img[0].src = "img/bot_ori_on.jpg";
	img[1] = new Image();  img[1].src = "img/bot_stu_on.jpg";
	img[2] = new Image();  img[2].src = "img/bot_mai_on.gif";
	img[3] = new Image();  img[3].src = "img/bot_inf_on.gif";
	img[4] = new Image();  img[4].src = "img/bot_pol_on.gif";
	img[5] = new Image();  img[5].src = "img/bot_for_on.gif";

//リンク関数01
	function joverevent(n){
		imgname="img/bot_" + n + "_on.jpg";
		document.images["bot_" + n].src=imgname;
	}
	function joutevent(n){
		imgname="img/bot_" + n + "_of.jpg";
		document.images["bot_" + n].src=imgname;
	}

//リンク関数02
	function overevent(n){
		imgname="img/bot_" + n + "_on.gif";
		document.images["bot_" + n].src=imgname;
	}
	function outevent(n){
		imgname="img/bot_" + n + "_of.gif";
		document.images["bot_" + n].src=imgname;
	}