if (document.images) br = "n3";
else br = "n2";


// Detect if browser is Netscape 3 + or IE 3 +.
//bName = navigator.appName;
//bVer = parseInt(navigator.appVersion);
//if ((bName == "Netscape" && bVer >= 3) ||
//(bName == "Microsoft Internet Explorer" && bVer >= 3)) br = "n3";
//else br = "n2";

// Create image objects, preload all active and inactive images.
if (br == "n3") {

img1on = new Image();
img1on.src = "../image/navi/suppon_o.gif";

img1off = new Image();
img1off.src ="../image/navi/suppon.gif";

img2on = new Image();
img2on.src = "../image/navi/torafugu_o.gif";

img2off = new Image();
img2off.src = "../image/navi/torafugu.gif";

img3on = new Image();
img3on.src = "../image/navi/tenpo_o.gif";

img3off = new Image();
img3off.src = "../image/navi/tenpo.gif";

img4on = new Image();
img4on.src = "../image/navi/tensyu_o.gif";

img4off = new Image();
img4off.src = "../image/navi/tensyu.gif";

img5on = new Image();
img5on.src = "../image/navi/ozasiki_o.gif";

img5off = new Image();
img5off.src = "../image/navi/ozasiki.gif";

img6on = new Image();
img6on.src = "../image/navi/ikesu_o.gif";

img6off = new Image();
img6off.src = "../image/navi/ikesu.gif";

img7on = new Image();
img7on.src = "../image/navi/menu_o.gif";

img7off = new Image();
img7off.src = "../image/navi/menu.gif";

img8on = new Image();
img8on.src = "../image/navi/koutu_o.gif";

img8off = new Image();
img8off.src = "../image/navi/koutu.gif";


img9on = new Image();
img9on.src = "../image/navi/fugu_etc_o.gif";

img9off = new Image();
img9off.src = "../image/navi/fugu_etc.gif";


img10on = new Image();
img10on.src = "../image/navi/osiharai_o.gif";

img10off = new Image();
img10off.src = "../image/navi/osiharai.gif";

img11on = new Image();
img11on.src = "../image/navi/keijiban_o.gif";

img11off = new Image();
img11off.src = "../image/navi/keijiban.gif";




}

function imgAct(imgName) {
if (br == "n3") {
document[imgName].src = eval(imgName + "on.src");
}
}

function imgInact(imgName) {
if (br == "n3") {
document[imgName].src = eval(imgName + "off.src");
}
}