if(document.images){
var flocation = "http://www.seattle.gov/parks/_images/imagesnav2/"
var onImage = new Array();

onImage["navaz"] = new Image()
onImage["navaz"].src =  flocation+"navazon.gif";

onImage["navcal"] = new Image()
onImage["navcal"].src = flocation+"navcalon.gif";

onImage["navcontact"] = new Image()
onImage["navcontact"].src = flocation+"navcontacton.gif";

onImage["navhome"] = new Image()
onImage["navhome"].src = flocation+"navhomeon.gif";

onImage["navjobs"] = new Image()
onImage["navjobs"].src = flocation+"navjobson.gif";

onImage["navnews"] = new Image()
onImage["navnews"].src = flocation+"navnewson.gif";

onImage["navfaq"] = new Image()
onImage["navfaq"].src = flocation+"navfaqon.gif";

onImage["navparks"] = new Image()
onImage["navparks"].src = flocation+"navparkson.gif";

onImage["navcomcent"] = new Image()
onImage["navcomcent"].src = flocation+"navcomcenton.gif";

onImage["navact"] = new Image()
onImage["navact"].src = flocation+"navacton.gif";

onImage["navresrentals"] = new Image()
onImage["navresrentals"].src = flocation+"navresrentalson.gif";

onImage["navprjplan"] = new Image()
onImage["navprjplan"].src = flocation+"navprjplanon.gif";


var offImage = new Array();

offImage["navaz"] = new Image()
offImage["navaz"].src = flocation+"navaz.gif";

offImage["navcal"] = new Image()
offImage["navcal"].src = flocation+"navcal.gif";

offImage["navcontact"] = new Image()
offImage["navcontact"].src = flocation+"navcontact.gif";

offImage["navhome"] = new Image()
offImage["navhome"].src = flocation+"navhome.gif";

offImage["navjobs"] = new Image()
offImage["navjobs"].src = flocation+"navjobs.gif";

offImage["navnews"] = new Image()
offImage["navnews"].src = flocation+"navnews.gif";

offImage["navfaq"] = new Image()
offImage["navfaq"].src = flocation+"navfaq.gif";

offImage["navparks"] = new Image()
offImage["navparks"].src = flocation+"navparks.gif";

offImage["navcomcent"] = new Image()
offImage["navcomcent"].src = flocation+"navcomcent.gif";

offImage["navact"] = new Image()
offImage["navact"].src = flocation+"navact.gif";

offImage["navresrentals"] = new Image()
offImage["navresrentals"].src = flocation+"navresrentals.gif";

offImage["navprjplan"] = new Image()
offImage["navprjplan"].src = flocation+"navprjplan.gif";
}

function showOn(imgName){
if(document.images)
document.images[imgName].src = onImage[imgName].src;
}

function showOff(imgName){
if(document.images)
document.images[imgName].src = offImage[imgName].src;
}