// Sniff pre v.86 versions of Safari

var agt = navigator.userAgent.toLowerCase();
var appVer = navigator.appVersion.toLowerCase();

var is_safari = (agt.indexOf("safari") != -1);
var build = appVer.substring(appVer.lastIndexOf("/")+1);

if (build < 86) {
document.write('<style type="text/css">li:hover ul { display: none } </style>');
}