// menu.js
// control the menu strip / nav bar

   // pre-load menu strip grahpics
   s_non = new Image(); s_non.src = "images/menu_non.jpg"
   s_hom = new Image(); s_hom.src = "images/menu_hom.jpg"
   s_gal = new Image(); s_gal.src = "images/menu_gal.jpg"
   s_bio = new Image(); s_bio.src = "images/menu_bio.jpg"
   s_con = new Image(); s_con.src = "images/menu_con.jpg"

   // array to index images
   //              0      1      2      3      4  
   var s_map = [ s_non, s_hom, s_gal, s_bio, s_con ]

   // buz menu bar
   function Buzz() {
   for (j=1; j<=20; j++) {
      for (k=1; k<=5; k++)
         //document.menubar.src = s_map[k].src
         document.images[0].src = s_map[k].src
   }
   }

   // TESTING
   //ttt = new Image(); 
   //ttt.src = "images/menu_voc.jpg"
   //document.images[0].src = ttt.src;

   // hi-lite a button
   function iOn (i) {
      document.images[0].src = s_map[i].src 
      return true;
   } // iOn

   // un-hi-lite a button
   function iOff () {
      document.images[0].src = s_non.src 
      return true;
   } // iOff