NS4 = (document.layers);

IE4 = (document.all);

ver4 = (NS4 || IE4);

IE5 = (IE4 && navigator.appVersion.indexOf("5.")!=-1);

isMac = (navigator.appVersion.indexOf("Mac") != -1);

isMenu = (NS4 || (IE4 && !isMac) || (IE5 && isMac));

function popUp(){return};

function popDown(){return};

if (!ver4) event=null;