//初期設定///////////////////////////////
	//画像保存先
	navi_folder = '/img/'
	//先読みする画像の名前
	var navi_file = new Array(
		'navi_home','navi_news','navi_special','navi_recipe','navi_products','navi_company','navi_recruit',
		'navi_inquiry');

//main///////////////////////////////////
	var navi_img = new Object();
	for (i=0;i<navi_file.length;i++){
		navi_img[navi_file[i]] = new Image();
		navi_img[navi_file[i]+"_on"] = new Image();
		navi_img[navi_file[i]].src = navi_folder + navi_file[i] + '.gif';
		navi_img[navi_file[i]+"_on"].src = navi_folder + navi_file[i] + "_on.gif";
	}

	function navi_On(name) {
		document.images[name].src = navi_img[name+"_on"].src;
	}
	function navi_Off(name) {
		document.images[name].src = navi_img[name].src;
	}