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

var onImgs = new Array();
onImgs["home"] = new Image(154,19);
onImgs["home"].src = "images/topnav/home_o.gif";
onImgs["history"] = new Image(154,19);
onImgs["history"].src = "images/topnav/history_o.gif";
onImgs["directors"] = new Image(86,19);
onImgs["directors"].src = "images/topnav/directors_o.gif";
onImgs["reach"] = new Image(81,19);
onImgs["reach"].src = "images/topnav/reach_o.gif";
onImgs["contact"] = new Image(63,19);
onImgs["contact"].src = "images/topnav/contact_o.gif";

onImgs["corporate"] = new Image(154,19);
onImgs["corporate"].src = "images/leftnav/overview_o.gif";
onImgs["structure"] = new Image(86,19);
onImgs["structure"].src = "images/leftnav/structure_o.gif";
onImgs["focus"] = new Image(81,19);
onImgs["focus"].src = "images/leftnav/focus_o.gif";
onImgs["advisory"] = new Image(63,19);
onImgs["advisory"].src = "images/leftnav/advisory_o.gif";


var offImgs = new Array();
offImgs["home"] = new Image(154,19);
offImgs["home"].src = "images/topnav/home.gif";
offImgs["history"] = new Image(154,19);
offImgs["history"].src = "images/topnav/history.gif";
offImgs["directors"] = new Image(86,19);
offImgs["directors"].src = "images/topnav/directors.gif";
offImgs["reach"] = new Image(81,19);
offImgs["reach"].src = "images/topnav/reach.gif";
offImgs["contact"] = new Image(63,19);
offImgs["contact"].src = "images/topnav/contact.gif";

offImgs["corporate"] = new Image(154,19);
offImgs["corporate"].src = "images/leftnav/overview.gif";
offImgs["structure"] = new Image(86,19);
offImgs["structure"].src = "images/leftnav/structure.gif";
offImgs["focus"] = new Image(81,19);
offImgs["focus"].src = "images/leftnav/focus.gif";
offImgs["advisory"] = new Image(63,19);
offImgs["advisory"].src = "images/leftnav/advisory.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;
        }
}