var navAge = navigator.userAgent
var browserVer = navigator.appVersion.charAt(0);
var myCount = 0;
var roadFlag = 0;
var currentPage = "blank";

if (browserVer >= 3) {
	toppurpose_on = new Image();
	toppurpose_on.src = "./top_img/bu_purpose_g.jpg";
	toppurpose_off = new Image();
	toppurpose_off.src = "./top_img/bu_purpose_n.jpg";
	//
	topoutline_on = new Image();
	topoutline_on.src = "./top_img/bu_outline_g.jpg";
	topoutline_off = new Image();
	topoutline_off.src = "./top_img/bu_outline_n.jpg";
	//
	toptrait_on = new Image();
	toptrait_on.src = "./top_img/bu_trait_g.jpg";
	toptrait_off = new Image();
	toptrait_off.src = "./top_img/bu_trait_n.jpg";
	//
	topcurriculum_on = new Image();
	topcurriculum_on.src = "./top_img/bu_curriculum_g.jpg";
	topcurriculum_off = new Image();
	topcurriculum_off.src = "./top_img/bu_curriculum_n.jpg";
	//
	topexam_on = new Image();
	topexam_on.src = "./top_img/bu_exam_g.jpg";
	topexam_off = new Image();
	topexam_off.src = "./top_img/bu_exam_n.jpg";
	//
	toprequest_on = new Image();
	toprequest_on.src = "./top_img/bu_request_g.jpg";
	toprequest_off = new Image();
	toprequest_off.src = "./top_img/bu_request_n.jpg";
	//
	purpose_on = new Image();
	purpose_on.src = "../navi_img/bu_purpose_g.gif";
	purpose_off = new Image();
	purpose_off.src = "../navi_img/bu_purpose_n.gif";
	//
	outline_on = new Image();
	outline_on.src = "../navi_img/bu_outline_g.gif";
	outline_off = new Image();
	outline_off.src = "../navi_img/bu_outline_n.gif";
	//
	trait_on = new Image();
	trait_on.src = "../navi_img/bu_trait_g.gif";
	trait_off = new Image();
	trait_off.src = "../navi_img/bu_trait_n.gif";
	//
	curriculum_on = new Image();
	curriculum_on.src = "../navi_img/bu_curriculum_g.gif";
	curriculum_off = new Image();
	curriculum_off.src = "../navi_img/bu_curriculum_n.gif";
	//
	exam_on = new Image();
	exam_on.src = "../navi_img/bu_exam_g.gif";
	exam_off = new Image();
	exam_off.src = "../navi_img/bu_exam_n.gif";
	//
	request_on = new Image();
	request_on.src = "../navi_img/bu_request_g.gif";
	request_off = new Image();
	request_off.src = "../navi_img/bu_request_n.gif";
	//
	sitemap_on = new Image();
	sitemap_on.src = "../navi_img/bu_sitemap_g.gif";
	sitemap_off = new Image();
	sitemap_off.src = "../navi_img/bu_sitemap_n.gif";
	//
	home_on = new Image();
	home_on.src = "../navi_img/bu_home_g.gif";
	home_off = new Image();
	home_off.src = "../navi_img/bu_home_n.gif";
	//
	otoiawase_on = new Image();
	otoiawase_on.src = "../navi_img/bu_otoiawase_g.gif";
	otoiawase_off = new Image();
	otoiawase_off.src = "../navi_img/bu_otoiawase_n.gif";
	//
	kensaku_on = new Image();
	kensaku_on.src = "../navi_img/bu_kensaku_g.gif";
	kensaku_off = new Image();
	kensaku_off.src = "../navi_img/bu_kensaku_n.gif";
	//
}


function actOn(imgName)  {
	if (browserVer >= 3)   {
		onImg = eval(imgName + "_on.src");
		document [imgName].src = onImg;
	}
}

function actOff(imgName)   {
	if (browserVer >= 3) {
		offImg = eval(imgName + "_off.src");
		document [imgName].src = offImg;
	}
}