IE6 图片轮换效果JS报类不能支持automation操作,该怎么处理

    function cleanallstyle() {
        for (i=0;i<7;i++) {
        document.getElementById("focus_"+i).className = "" ;
        }
    }
    function show_focus_image(index) {
             clearTimeout(refreshHotQueryTimer);
        setHotQueryList(index);
        refreshHotQueryTimer = setTimeout('refreshHotQuery();', 5000);
    }
    function setClick() {
        clearTimeout(refreshHotQueryTimer);
         }
    var refreshHotQueryTimer = null ;
    var hot_query_td =  document.getElementById('HotSearchList');
    setHotQueryList(CurrentHotScreen);
    refreshHotQueryTimer = setTimeout('refreshHotQuery();', 5000);