var NET2 = (navigator.appName == "Netscape" && parseInt(navigator.appVersion) >= 4);
    var invis = (NET2) ? 'hide' : 'hidden';
    var vis = (NET2) ? 'show' : 'visible';
    var imb41 = (NET2) ? document.imb41 : document.all.imb41.style;
    var imb42 = (NET2) ? document.imb42 : document.all.imb42.style;
    var imb43 = (NET2) ? document.imb43 : document.all.imb43.style;
    var imb44 = (NET2) ? document.imb44 : document.all.imb44.style;
    var imb45 = (NET2) ? document.imb45 : document.all.imb45.style;
    var imb46 = (NET2) ? document.imb46 : document.all.imb46.style;