var news = new Image();
news.src="img/nav/news_a.gif";

var newsoff = new Image();
newsoff.src="img/nav/news.gif";

var about_us = new Image();
about_us.src="img/nav/about_us_a.gif";

var about_usoff = new Image();
about_usoff.src="img/nav/about_us.gif";

var programs = new Image();
programs.src="img/nav/programs_a.gif";

var programsoff = new Image();
programsoff.src="img/nav/programs.gif";

var promotions = new Image();
promotions.src="img/nav/promotions_a.gif";

var promotionsoff = new Image();
promotionsoff.src="img/nav/promotions.gif";

var products = new Image();
products.src="img/nav/products_a.gif";

var productsoff = new Image();
productsoff.src="img/nav/products.gif";

var schedule = new Image();
schedule.src="img/nav/schedule_a.gif";

var scheduleoff = new Image();
scheduleoff.src="img/nav/schedule.gif";

var training = new Image();
training.src="img/nav/training_a.gif";

var trainingoff = new Image();
trainingoff.src="img/nav/training.gif";

var faqs = new Image();
faqs.src="img/nav/faqs_a.gif";

var faqsoff = new Image();
faqsoff.src="img/nav/faqs.gif";

var hours = new Image();
hours.src="img/nav/hours_a.gif";

var hoursoff = new Image();
hoursoff.src="img/nav/hours.gif";

var forum = new Image();
forum.src="img/nav/forum_a.gif";

var forumoff = new Image();
forumoff.src="img/nav/forum.gif";

var links = new Image();
links.src="img/nav/links_a.gif";

var linksoff = new Image();
linksoff.src="img/nav/links.gif";

var menu_background = new Image();
menu_background.src = "img/dropdown_bg_hover.gif";

function on(imgname, action)
{
if(action)
  {
   eval ('document.'+imgname+'.src = '+imgname+'.src')
   }
else eval ('document.'+imgname+'.src = '+imgname+'off.src');
}