<!--
//dropdown_initialize.js
  var preloaded = [];
  for (var i = 1; i <= 8; i++) {
   preloaded[i] = [loadImage(i + "-1.gif"), loadImage(i + "-1.gif")];  //设置图片的OnMouseOver和OnMouseOut的路径
  }
  function init() {
   if (mtDropDown.isSupported()) {
    mtDropDown.initialize();
//    menu1.onactivate = function() { swapImage("button1", preloaded[1][1].src) };
//    menu1.ondeactivate = function() { swapImage("button1", preloaded[1][0].src) };

   }
  }
  function loadImage(sFilename) {
   var img = new Image();
   img.src ="" + sFilename;
   return img;
  }
  function swapImage(imgName, sFilename) {
   document.images[imgName].src = sFilename;
  }
//-->