// image preloads and rollovers for drop-down menu images.

if (document.images) {
  image0on = new Image();
  image0on.src = "../images/nav_info-over.jpg";
  image1on = new Image();
  image1on.src = "../images/nav-aboutus-over.jpg";
  image2on = new Image();
  image2on.src = "../images/nav_bus-over.jpg";
  image3on = new Image();
  image3on.src = "../images/nav_prod-over.jpg";
  image4on = new Image();
  image4on.src = "../images/nav_hol-over.jpg";
  image5on = new Image();
  image5on.src = "../images/nav_service-over.jpg";

  image0off = new Image();
  image0off.src = "../images/nav_info.jpg";
  image1off = new Image();
  image1off.src = "../images/nav-aboutus.jpg";
  image2off = new Image();
  image2off.src = "../images/nav_bus.jpg";
  image3off = new Image();
  image3off.src = "../images/nav_prod.jpg";
  image4off = new Image();
  image4off.src = "../images/nav_hol.jpg";
  image5off = new Image();
  image5off.src = "../images/nav_service.jpg";
}

function changeImages() {
  if (document.images) {
    for (var i=0; i<changeImages.arguments.length; i+=2) {
      document[changeImages.arguments[i]].src = eval(changeImages.arguments[i+1] + ".src");
    }
  }
}


// image preloads and rollovers for non-drop-down menu images.

function newImg(arg) {
	if (document.images) {
		rslt = new Image();
		rslt.src = arg;
		return rslt;
	}
}

function chgImages() {
	if (document.images && (preloadFlag == true)) {
		for (var i=0; i<chgImages.arguments.length; i+=2) {
			document[chgImages.arguments[i]].src = chgImages.arguments[i+1];
		}
	}
}

var preloadFlag = false;
function preloadImages() {
	if (document.images) {
		nav_info_over = newImg("../images/nav_info-over.jpg");
		nav_login_over = newImg("../images/nav_login-over.jpg");
		nav_home_over = newImg("../images/nav_home-over.jpg");
		preloadFlag = true;
	}
}

var preloadFlag = true;