function startList(navId) {
  if (document.all && document.getElementById) {
    navRoot = document.getElementById(navId);
    for (i = 0; i < navRoot.childNodes.length; i++) {
      node = navRoot.childNodes[i];
      if (node.nodeName == 'LI') {
        node.onmouseover = function() {
          this.className += ' over';
        }
        node.onmouseout = function() {
          this.className = this.className.replace(new RegExp(" over\\b"), '');
        }
      }
    }
  }
}

function MM_preloadImages() { //v3.0
  var d=document; if(d.images){ if(!d.MM_p) d.MM_p=new Array();
    var i,j=d.MM_p.length,a=MM_preloadImages.arguments; for(i=0; i<a.length; i++)
    if (a[i].indexOf("#")!=0){ d.MM_p[j]=new Image; d.MM_p[j++].src=a[i];}}
}

window.onload = function() {
  startList('menu_list');
  MM_preloadImages('img/moojo_natbt_on_01.jpg', 'img/moojo_natbt_on_02.jpg', 'img/moojo_natbt_on_03.jpg', 'img/moojo_natbt_on_04.jpg', 'img/moojo_natbt_on_05.jpg', 'img/moojo_natbt_on_06.jpg', 'img/moojo_natbt_on_07.jpg');
}