addLoadEvent(showSubNav);
function addLoadEvent(func){
  var oldonload = window.onload;
  if (typeof window.onload != 'function'){
    window.onload = func;
  }else{
    window.onload = function(){
      oldonload();
      func();
    }
  }
}
function showSubNav(){
  var subnav = document.getElementById("sub_nav");
  var links = subnav.getElementsByTagName("a");
  var show = subnav.getElementsByTagName("li");
  for (var i=0;i<links.length;i++){
    if (links[i].firstChild.nodeValue == "Info"){
      links[i].setAttribute("href","#");
    }
    if (links[i].nextSibling) {
      links[i].onmouseover = function(){
        this.nextSibling.style.display="block";
      }
    }
  }
}