if (document.images) {
menu_exp_F1 = new Image(88,40); menu_exp_F1.src = "../img/menu_exp.gif";
menu_exp_F2 = new Image(88,40); menu_exp_F2.src = "../img/menu_exp_F2.gif";
menu_qly_F1 = new Image(88,40); menu_qly_F1.src = "../img/menu_qly.gif";
menu_qly_F2 = new Image(88,40); menu_qly_F2.src = "../img/menu_qly_F2.gif";
menu_biz_F1 = new Image(88,40); menu_biz_F1.src = "../img/menu_biz.gif";
menu_biz_F2 = new Image(88,40); menu_biz_F2.src = "../img/menu_biz_F2.gif";
menu_cus_F1 = new Image(88,40); menu_cus_F1.src = "../img/menu_cus.gif";
menu_cus_F2 = new Image(88,40); menu_cus_F2.src = "../img/menu_cus_F2.gif";
}

/* Function that swaps images. */

function di20(id, newSrc) {
    var theImage = FWFindImage(document, id, 0);
    if (theImage) {
        theImage.src = newSrc;
    }
}

/* Functions that track and set toggle group button states. */

function FWFindImage(doc, name, j) {
    var theImage = false;
    if (doc.images) {
        theImage = doc.images[name];
    }
    if (theImage) {
        return theImage;
    }
    if (doc.layers) {
        for (j = 0; j < doc.layers.length; j++) {
            theImage = FWFindImage(doc.layers[j].document, name, 0);
            if (theImage) {
                return (theImage);
            }
        }
    }
    return (false);
}