browserName = navigator.appName;
browserVer = parseInt(navigator.appVersion);

if (browserName == "Netscape" && browserVer >= 3) version = "n3";
else if (browserName == "Microsoft Internet Explorer" && browserVer >= 4) version = "e4";
else version = "n2";

function buttonLight(imgname,imgnew) {

        if ((version == "n3") || (version == "e4")) {
        document.images[imgname].src=eval(imgnew + ".src");
        }
}

if ((version == "n3") || (version == "e4")) {
sidea                   = new Image (92,16);
sidea.src               = "images/b-members1.gif";
sidea_h                 = new Image (92,16);
sidea_h.src             = "images/b-members2.gif";

sideb                   = new Image (88,16);
sideb.src               = "images/b-about1.gif";
sideb_h                 = new Image (88,16);
sideb_h.src             = "images/b-about2.gif";

sidec                   = new Image (83,16);
sidec.src               = "images/b-officers1.gif";
sidec_h                 = new Image (83,16);
sidec_h.src             = "images/b-officers2.gif";

sided                   = new Image (31,16);
sided.src               = "images/b-home1.gif";
sided_h                 = new Image (31,16);
sided_h.src             = "images/b-home2.gif";

sidee                   = new Image (63,16);
sidee.src               = "images/b-committees1.gif";
sidee_h                 = new Image (63,16);
sidee_h.src             = "images/b-committees2.gif";

}