// JavaScript Document

function menuOverGener(elemID) {
  var elem = document.getElementById(elemID);
  if (!elem) return false;
  var elems = elem.getElementsByTagName('img');
  if (!elems) return false;
  for (var i=0;i<elems.length;i++) {
    if (elems[i].src.indexOf('_on')>=0) continue;
    elems[i].onmouseover = menuOverMouseOver;
    elems[i].onmouseout = menuOverMouseOut;
  }
}

function menuOverMouseOver() {
  this.src = this.src.replace('_off','_on');
}

function menuOverMouseOut() {
  this.src = this.src.replace('_on','_off');
}