请高人指教为什么jquery语句老是提示错误呢？老是出现消息: 'null' 为空或不是对象。单独拿出来放到一个页面的话就不会出错。

具体
<div class="flashbanner">
            <SCRIPT language=javascript type=text/javascript>
 var photos31=[
["http://www.wholesale-gucci.com/images/categories/575x180.jpg","wholesale-prada","#"],["http://www.wholesale-gucci.com/images/categories/575x180.jpg","wholesale-prada","#"],["http://www.wholesale-gucci.com/images/categories/575x180.jpg","wholesale-prada","#"],["http://www.wholesale-gucci.com/images/categories/575x180.jpg","wholesale-prada","#"]];</SCRIPT>            <DIV id=focusViwer31>         </DIV>          <DIV style="PADDING-BOTTOM: 10px; MARGIN-TOP: 0px" id=bannerAdCenterTOP class="txtBanner noMarginTop">            <SCRIPT type=text/javascript>var numStr = "";for (var i = 1; i < photos31.length + 1; i++){numStr += ("<li><span class='numVal'>" + i + "</span></li>");}var html = '<div id="TopAD" class="slideBanner" style="display:none;height:180px;"><ul class="img"></ul><div class="panel"></div><ul class="num">' + numStr + '</ul></div>';$("#focusViwer31").append(html);imgPlayerTopAndMidIndex("TopAD", photos31);var interval31 = setInterval('showNumImg("TopAD")', 6000);$("#focusViwer31>a").remove();$("#TopAD").show();$("#TopAD").mouseenter(function() { clearInterval(interval31); });$("#TopAD").mouseleave(function() { interval31 = setInterval('showNumImg("TopAD")', 6000);});</SCRIPT>          </DIV>                            </div>        把这段代码替换www.wholesale-prada.com 上的flash banner图片切换的老是出现：
消息: 'null' 为空或不是对象
行: 366
字符: 1
代码: 0