// PRELOADING IMAGES
if (document.images) {

 img1_on =new Image(); img1_on.src ="menuButtons/menuFon.gif"; 
  img2_on =new Image(); img2_on.src ="menuButtons/menuEon.gif";
   img3_on =new Image(); img3_on.src ="menuButtons/menuBon.gif";
    img4_on =new Image(); img4_on.src ="menuButtons/menuLon.gif";
     img5_on =new Image(); img5_on.src ="menuButtons/menuDon.gif"; 
      img6_on =new Image(); img6_on.src ="menuButtons/menuAon.gif"; 
       img7_on =new Image(); img7_on.src ="menuButtons/menuPon.gif"; 
        img8_on =new Image(); img8_on.src ="menuButtons/menuSon.gif"; 

img1_off=new Image(); img1_off.src="menuButtons/menuF.gif"; 
 img2_off=new Image(); img2_off.src="menuButtons/menuE.gif"; 
  img3_off=new Image(); img3_off.src="menuButtons/menuB.gif";
   img4_off=new Image(); img4_off.src="menuButtons/menuL.gif"; 
    img5_off=new Image(); img5_off.src="menuButtons/menuD.gif"; 
     img6_off=new Image(); img6_off.src="menuButtons/menuA.gif";
       img7_off =new Image(); img7_off.src ="menuButtons/menuP.gif"; 
        img8_off =new Image(); img8_off.src ="menuButtons/menuS.gif"; 

}


function ImgOn(k) {
 if (document.images) 
  eval('document.img'+k+'.src=img'+k+'_on.src');
}

function ImgOff(k) {
 if (document.images) 
  eval('document.img'+k+'.src=img'+k+'_off.src');
}