var children = document.getElementsByTagName('li');

      for (var i = 0; i < children.length; i++) {
      
        if(children[i].className=="fixBackground"){
          
          children[i].style.zIndex=children.length-i;
          
          var temp = children[i].getElementsByTagName('a');
          if(temp[0] && temp[0].className!="active"){
            children[i].style.height=temp[0].offsetHeight+"px";
            
            temp[0].onmouseover = function (){
              menu_hover_change(this);
            }
            temp[0].onmouseout = function (){
              menu_over_change(this);
            }
          }          
          
          if(temp[0] && temp[0].className=="active"){
            children[i].style.height=temp[0].offsetHeight+"px";
            temp[0].style.height=temp[0].offsetHeight-16+"px";
          }
          
          var temp = children[i].getElementsByTagName('span');
          if(temp[0]){
            children[i].style.height=temp[0].offsetHeight+"px";
            temp[0].style.height=temp[0].offsetHeight-9+"px";
            temp[0].style.position="absolute";
          }
        }
      }
      function menu_hover_change(ele){
        ele.style.height=ele.offsetHeight-9+"px";
      }
  
      function menu_over_change(ele){
          ele.style.height='';
      }