Zhover =
  (((navigator.appName == "Netscape") &&
  (parseInt(navigator.appVersion) >= 3 )) ||
  ((navigator.appName == "Microsoft Internet Explorer") &&
  (parseInt(navigator.appVersion) >= 4 )));
function Xpreload(img){
var a=new Image(); a.src=img; return a;
}
 if(Zhover) { Anav4n=Xpreload("http://en.martinsauto.com/img/repairableautos.jpg"); Anav4h=Xpreload("http://en.martinsauto.com/img/repairableautos.gif"); }
 if(Zhover) { Bnav4n=Xpreload("http://en.martinsauto.com/img/preownedautos.jpg"); Bnav4h=Xpreload("http://en.martinsauto.com/img/preownedautos.gif"); }
 if(Zhover) { Cnav4n=Xpreload("http://en.martinsauto.com/img/classiccars.jpg"); Cnav4h=Xpreload("http://en.martinsauto.com/img/classiccars.gif"); }
 if(Zhover) { Dnav4n=Xpreload("http://en.martinsauto.com/img/campers.jpg"); Dnav4h=Xpreload("http://en.martinsauto.com/img/campers.gif"); }
 if(Zhover) { Enav4n=Xpreload("http://en.martinsauto.com/img/carsearch.jpg"); Enav4h=Xpreload("http://en.martinsauto.com/img/carsearch.gif"); }