//初期設定///////////////////////////////
	//画像保存先
	var folder = "../images/";

	//先読みする画像の名前
	var p_file = new Array('m_about','m_archive','m_downloads','m_form','m_award2012','m_how','m_judges','m_top','header_logo','input');
//main///////////////////////////////////
	var img = new Object();
	for (i=0;i<p_file.length;i++){
		img[p_file[i]] = new Image();
		img[p_file[i]+"_on"] = new Image();
		img[p_file[i]].src = folder + p_file[i] + ".gif";
		img[p_file[i]+"_on"].src = folder + p_file[i] + "_on.gif";
	}

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