<!-- // hide

function newImage(arg) {
  if (document.images) {
    rslt = new Image();
    rslt.src = arg;
    return rslt;
  }
}

function changeImages() {
  if (document.images && (preloadFlag == true)) {
    for (var i=0; i<changeImages.arguments.length; i+=2) {
      document[changeImages.arguments[i]].src = changeImages.arguments[i+1];
    }
  }
}

var preloadFlag = false;
function preloadImages() {
	if (document.images) {
		nav_home_on = newImage("graphics/nav/home-on.gif");
		nav_products_on = newImage("graphics/nav/products-on.gif");
		nav_courses_on = newImage("graphics/nav/courses-on.gif");
		nav_employment_on = newImage("graphics/nav/employment-on.gif");
		nav_contact_on = newImage("graphics/nav/contact-on.gif");
		preloadFlag = true;
	}
}

//-->