function imgOn(imgName)
{if (document.images) {document[imgName].src=eval(imgName+"on.src");}}

function imgOff(imgName)
{if (document.images) {document[imgName].src=eval(imgName+"off.src");}}

if (document.images)
{
scontactuson=new Image(); scontactuson.src="../img/snav_l1_contactus_over.gif";
scontactusoff=new Image(); scontactusoff.src="../img/snav_l1_contactus_off.gif";

drivingon=new Image(); drivingon.src="../img/snav_l2_driving_over.gif";
drivingoff=new Image(); drivingoff.src="../img/snav_l2_driving_off.gif";

}