// PRELOADING IMAGES
    if(document.images) {
        
      img1_on =new Image(); img1_on.src ="images/mouse_on/button_home.jpg";
      img1_off=new Image(); img1_off.src ="images/mouse_off/button_home.jpg"; 
      img2_on =new Image(); img2_on.src ="images/mouse_on/button_overmij.jpg";
      img2_off=new Image(); img2_off.src ="images/mouse_off/button_overmij.jpg";
      img3_on =new Image(); img3_on.src ="images/mouse_on/button_cursussen.jpg";
      img3_off=new Image(); img3_off.src ="images/mouse_off/button_cursussen.jpg";     
      img4_on =new Image(); img4_on.src ="images/mouse_on/button_sieraden.jpg";
      img4_off=new Image(); img4_off.src ="images/mouse_off/button_sieraden.jpg";
      img5_on =new Image(); img5_on.src ="images/mouse_on/button_contact.jpg";     
      img5_off=new Image(); img5_off.src ="images/mouse_off/button_contact.jpg";   
      img6_on =new Image(); img6_on.src ="images/mouse_on/button_vorige.jpg";     
      img6_off=new Image(); img6_off.src ="images/mouse_off/button_vorige.jpg";   
      img7_on =new Image(); img7_on.src ="images/mouse_on/button_volgende.jpg";     
      img7_off=new Image(); img7_off.src ="images/mouse_off/button_volgende.jpg";   
      img8_on =new Image(); img8_on.src ="images/mouse_on/button_overzicht.jpg";     
      img8_off=new Image(); img8_off.src ="images/mouse_off/button_overzicht.jpg";   
      img9_on =new Image(); img9_on.src ="images/mouse_on/button_place_in_basket.jpg";     
      img9_off=new Image(); img9_off.src ="images/mouse_off/button_place_in_basket.jpg";  
      img10_on =new Image(); img10_on.src ="images/mouse_on/button_basket.jpg";     
      img10_off=new Image(); img10_off.src ="images/mouse_off/button_basket.jpg";   
      img11_on =new Image(); img11_on.src ="images/mouse_on/naarkassa.jpg";     
      img11_off=new Image(); img11_off.src ="images/mouse_off/naarkassa.jpg";   
      img12_on =new Image(); img12_on.src ="images/mouse_on/button_back.jpg";     
      img12_off=new Image(); img12_off.src ="images/mouse_off/button_back.jpg";   
      img13_on =new Image(); img13_on.src ="images/mouse_on/button_remove.jpg";     
      img13_off=new Image(); img13_off.src ="images/mouse_off/button_remove.jpg";        
  
    }
    
    function movr(k) {
     if (document.images)
      eval('document.img'+k+'.src=img'+k+'_on.src');
    }
    
    function mout(k) {
     if (document.images)
      eval('document.img'+k+'.src=img'+k+'_off.src');
    }