if (document.images)
{
  about = new Image(85,30); 
  about.src="background/about.gif"; 

  about_on= new Image(85,30); 
  about_on.src="background/about_on.gif";

  contact= new Image(85,30); 
  contact.src="background/contact.gif";
  
  contact_on= new Image(85,30); 
  contact_on.src="background/contact_on.gif";
  
  auto= new Image(85,30); 
  auto.src="background/auto.gif"; 

  auto_on= new Image(85,30); 
  auto_on.src="background/auto_on.gif";

  serv= new Image(85,30); 
  serv.src="background/serv.gif";
  
  serv_on= new Image(85,30); 
  serv_on.src="background/serv_on.gif";
  
  ts= new Image(85,30); 
  ts.src="background/ts.gif"; 

  ts_on= new Image(85,30); 
  ts_on.src="background/ts_on.gif";

  ra= new Image(85,30); 
  ra.src="background/ra.gif";
  
  ra_on= new Image(85,30); 
  ra_on.src="background/ra_on.gif";

}