var contact = new Image();
contact.src = "/images/nav/contact.gif";
var contact_on = new Image();
contact_on.src = "/images/nav/contact_on.gif";

var gallery = new Image();
gallery.src = "/images/nav/gallery.gif";
var gallery_on = new Image();
gallery_on.src = "/images/nav/gallery_on.gif";

var hightimes = new Image();
hightimes.src = "/images/nav/hightimes.gif";
var hightimes_on = new Image();
hightimes_on.src = "/images/nav/hightimes_on.gif";

var learnToFly = new Image();
learnToFly.src = "/images/nav/learnToFly.gif";
var learnToFly_on = new Image();
learnToFly_on.src = "/images/nav/learnToFly_on.gif";

var links = new Image();
links.src = "/images/nav/links.gif";
var links_on = new Image();
links_on.src = "/images/nav/links_on.gif";

var newsEvents = new Image();
newsEvents.src = "/images/nav/newsEvents.gif";
var newsEvents_on = new Image();
newsEvents_on.src = "/images/nav/newsEvents_on.gif";

var pilotForum = new Image();
pilotForum.src = "/images/nav/pilotForum.gif";
var pilotForum_on = new Image();
pilotForum_on.src = "/images/nav/pilotForum_on.gif";

var weatherInfo = new Image();
weatherInfo.src = "/images/nav/weatherInfo.gif";
var weatherInfo_on = new Image();
weatherInfo_on.src = "/images/nav/weatherInfo_on.gif";

function activate(imgName) {
  if ( eval(imgName + "_on.complete") ) {
    document.images[imgName].src = eval(imgName + "_on.src");
  }
}

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