if (document.images) {

   
   navbar1on = new Image();
   navbar1on.src = "img/home-on.gif";
   navbar1off = new Image();
   navbar1off.src = "img/home-off.gif";  
   
   navbar2on = new Image();
   navbar2on.src = "img/bio-on.gif";
   navbar2off = new Image();
   navbar2off.src = "img/bio-off.gif";
   
   navbar3on = new Image();
   navbar3on.src = "img/concerts-on.gif";
   navbar3off = new Image();
   navbar3off.src = "img/concerts-off.gif";
   
   navbar4on = new Image();
   navbar4on.src = "img/fingeringbook-on.gif";
   navbar4off = new Image();
   navbar4off.src = "img/fingeringbook-off.gif";
   
   navbar5on = new Image();
   navbar5on.src = "img/purchase-on.gif";
   navbar5off = new Image();
   navbar5off.src = "img/purchase-off.gif";
   
   
   navbar6on = new Image();
   navbar6on.src = "img/fluteinfo-on.gif";
   navbar6off = new Image();
   navbar6off.src = "img/fluteinfo-off.gif";  
   
   
   navbar7on = new Image();
   navbar7on.src = "img/contact-on.gif";
   navbar7off = new Image();
   navbar7off.src = "img/contact-off.gif";  
   
   navbar8on = new Image();
   navbar8on.src = "img/search-on.gif";
   navbar8off = new Image();
   navbar8off.src = "img/search-off.gif";  
   
   navbar9on = new Image();
   navbar9on.src = "img/guestbook-on.gif";
   navbar9off = new Image();
   navbar9off.src = "img/guestbook-off.gif";  
   
   navbar10on = new Image();
   navbar10on.src = "img/guestbook-on.gif";
   navbar10off = new Image();
   navbar10off.src = "img/guestbook-off.gif";  
   
   }


function img_act(imgName)  {

   imgOn = eval(imgName + "on.src");
   document [imgName].src = imgOn;

}

function img_inact(imgName)   {

   imgOff = eval(imgName + "off.src");
   document [imgName].src = imgOff;

}