if (document.images)
{
  about= new Image(155,22); 
  about.src="images/about_hover.gif"; 

  locations= new Image(155,22); 
  locations.src="images/locations_hover.gif"; 

  services= new Image(155,22); 
  services.src="images/services_hover.gif"; 

  careers= new Image(155,22); 
  careers.src="images/careers_hover.gif"; 

  news= new Image(155,22); 
  news.src="images/news_hover.gif"; 

  newsletter= new Image(155,22); 
  newsletter.src="images/newsletter_hover.gif"; 

  resources= new Image(155,22); 
  resources.src="images/resources_hover.gif"; 

  contact= new Image(155,22); 
  contact.src="images/contact_hover.gif"; 
}