var TOGGLE_OPEN = new Image(16, 16);
   var TOGGLE_CLOSED = new Image(16, 16);
   TOGGLE_OPEN.src = "images/toggleOpen.png";
   TOGGLE_CLOSED.src = "images/toggleClosed.png";
   var TOGGLE_OPEN_HEADER = "Toggle to Hide Example Code";
   var TOGGLE_CLOSED_HEADER = "Toggle to Show Example Code";
   var NEXT_PAGE = "";
   var PREV_PAGE = "";
   
   function toggle(toggleId) {
      var tImg = document.getElementById(toggleId + "_toggle");
      var tContent = document.getElementById(toggleId + "_content");
      var tHeader = document.getElementById(toggleId + "_header");
      var tDisp = "none";
      var tHead = TOGGLE_CLOSED_HEADER;
      var imgSrc = TOGGLE_CLOSED.src;
      if(tImg.src==TOGGLE_CLOSED.src) {
         tDisp = "";
         tHead = TOGGLE_OPEN_HEADER;
         imgSrc = TOGGLE_OPEN.src;
      }
      tImg.src = imgSrc;
      tContent.className = "codeArea2";
      tContent.style.display = tDisp;
      tHeader.innerHTML = tHead;
   }

   function fwd() {
      document.location.href=NEXT_PAGE;
   }

   function prev() {
      document.location.href=PREV_PAGE;
   }