if (document.images)
{
  pic1 = new Image(); 
  pic1.src = "gfx/nav_home_over.jpg"; 

  pic2 = new Image(); 
  pic2.src = "gfx/nav_nieuws_over.jpg"; 

  pic3 = new Image(); 
  pic3.src = "gfx/nav_akties_over.jpg";
  
  pic4 = new Image(); 
  pic4.src = "gfx/nav_fitness_over.jpg";
  
  pic5 = new Image(); 
  pic5.src = "gfx/nav_kids_over.jpg";
  
  pic6 = new Image(); 
  pic6.src = "gfx/nav_groepslessen_over.gif";
  
  pic7 = new Image(); 
  pic7.src = "gfx/nav_bedrijven_over.jpg";
  
  pic8 = new Image(); 
  pic8.src = "gfx/nav_lessenrooster_over.jpg";
  
  pic9 = new Image(); 
  pic9.src = "gfx/nav_openingstijden_over.jpg";
  
  pic10 = new Image(); 
  pic10.src = "gfx/nav_afspraak_over.jpg";
  
  pic11 = new Image(); 
  pic11.src = "gfx/nav_lidvandemaand_over.jpg";
  
  pic12 = new Image(); 
  pic12.src = "gfx/nav_fotos_over.jpg";
 
  pic13 = new Image(); 
  pic13.src = "gfx/nav_vacactures_over.jpg";
  
  pic14 = new Image(); 
  pic14.src = "gfx/nav_contact_over.jpg";

  pic15 = new Image(); 
  pic15.src = "gfx/nav_kortingspas_over.jpg";

  pic16 = new Image(); 
  pic16.src = "gfx/nav_infavorieten_over.jpg";

  pic17 = new Image(); 
  pic17.src = "gfx/nav_onlinereserveren_over.jpg";
}