if(document.images){
//top navigation on

var onImgs = new Array();


onImgs["about"] = new Image(166,120);
onImgs["about"].src = "mbps/images/leftnav/about_sp_o.gif";
onImgs["press"] = new Image(166,120);
onImgs["press"].src = "mbps/images/leftnav/press_sp_o.gif";
onImgs["issues"] = new Image(166,120);
onImgs["issues"].src = "mbps/images/leftnav/issues_sp_o.gif";
onImgs["endorsements"] = new Image(159,19);
onImgs["endorsements"].src = "mbps/images/leftnav/endorsements_sp_o.gif";
onImgs["contact2"] = new Image(166,120);
onImgs["contact2"].src = "mbps/images/leftnav/contact_sp_o.gif";
onImgs["contribute2"] = new Image(166,120);
onImgs["contribute2"].src = "mbps/images/leftnav/contribute_sp_o.gif";
onImgs["links"] = new Image(166,120);
onImgs["links"].src = "mbps/images/leftnav/links_sp_o.gif";
onImgs["home"] = new Image(166,119);
onImgs["home"].src = "mbps/images/leftnav/home_sp_o.gif";

onImgs["enews"] = new Image(166,36);
onImgs["enews"].src = "mbps/images/right/enews_sp_o.gif";

onImgs["contribute_but"] = new Image(166,36);
onImgs["contribute_but"].src = "mbps/images/right/contribute_but_sp_o.gif";

onImgs["email_friend"] = new Image(166,42);
onImgs["email_friend"].src = "mbps/images/right/email_friend_sp_o.gif";
onImgs["amigos"] = new Image(166,36);
onImgs["amigos"].src = "mbps/images/right/amigos_o.gif";
onImgs["vote"] = new Image(166,36);
onImgs["vote"].src = "mbps/images/right/register_vote_sp_o.gif";




var offImgs = new Array();

offImgs["about"] = new Image(166,120);
offImgs["about"].src = "mbps/images/leftnav/about_sp.gif";
offImgs["press"] = new Image(166,120);
offImgs["press"].src = "mbps/images/leftnav/press_sp.gif";
offImgs["issues"] = new Image(166,120);
offImgs["issues"].src = "mbps/images/leftnav/issues_sp.gif";
offImgs["endorsements"] = new Image(166,120);
offImgs["endorsements"].src = "mbps/images/leftnav/endorsements_sp.gif";
offImgs["contact2"] = new Image(166,120);
offImgs["contact2"].src = "mbps/images/leftnav/contact_sp.gif";
offImgs["contribute2"] = new Image(166,120);
offImgs["contribute2"].src = "mbps/images/leftnav/contribute_sp.gif";
offImgs["links"] = new Image(166,120);
offImgs["links"].src = "mbps/images/leftnav/links_sp.gif";
offImgs["home"] = new Image(166,119);
offImgs["home"].src = "mbps/images/leftnav/home_sp.gif";

offImgs["enews"] = new Image(166,36);
offImgs["enews"].src = "mbps/images/right/enews_sp.gif";

offImgs["contribute_but"] = new Image(166,36);
offImgs["contribute_but"].src = "mbps/images/right/contribute_but_sp.gif";

offImgs["email_friend"] = new Image(166,42);
offImgs["email_friend"].src = "  mbps/images/right/email_friend_sp.gif";
offImgs["amigos"] = new Image(166,36);
offImgs["amigos"].src = "mbps/images/right/amigos.gif";
offImgs["vote"] = new Image(166,36);
offImgs["vote"].src = "mbps/images/right/register_vote_sp.gif";




}

	
function imgOn(imgName) {
        if (document.images) {
            document.images[imgName].src = onImgs[imgName].src;
        }
}

function imgOff(imgName) {
        if (document.images) {
            document.images[imgName].src = offImgs[imgName].src;
        }
}