//初期設定///////////////////////////////
	//画像保存先
	folder = '/img/'
	//先読みする画像の名前
	var p_file = new Array('navi_top','navi_about','navi_delicious','navi_vigour','navi_beauty','navi_monthly','navi_quiz','navi_relation','navi_video','navi_event','navi_info','navi_recipe','navi_commodity','navi_useful','navi_astro','navi_life','navi_faq','navi_sheet','navi_astro_quiz','back','top','3adaytte');

//main///////////////////////////////////
	var img = new Object();
	for (i=0;i<p_file.length;i++){
		img[p_file[i]] = new Image();
		img[p_file[i]+"_f2"] = new Image();
		img[p_file[i]].src = folder + p_file[i] + '.gif';
		img[p_file[i]+"_f2"].src = folder + p_file[i] + "_on.gif";
	}

	function On(name) {
		document.images[name].src = img[name+"_f2"].src;
	}
	function Off(name) {
		document.images[name].src = img[name].src;
	}