var trackOver = 0 //Global

function OverSubClick(){
  trackOver = 4;
}

function OverSub(){
  trackOver = 4;
}

function OutSub(){
  trackOver = 0;
}

function OverSubNav4(){
    var browserType = navigator.appVersion;
    if (browserType.indexOf("MSIE") == -1 && navigator.userAgent.toLowerCase().indexOf("gecko") == -1) {
      OverSub();
    }
}