IE 在我打开开发人员工具之前不会加载 XML 内容

我有一个页面，它使用 jQuery AJAX get 请求从 XML 文件加载产品信息。这在FF和Chrome中效果很好，但是内容不会在IE中加载。但是，它将在打开开发人员窗口并刷新页面后加载数据！有谁知道为什么？

这是我的jQuery AJAX请求：

//Load the xml file
$.ajax({
    type: "GET",
    url: "xml/" + cat + ".xml",
    dataType: ($.browser.msie) ? "text" : "xml",
    success: function(data) {
      alert('xml successfully loaded');
      var xml;
      if (typeof data == "string") {
        xml = new ActiveXObject("Microsoft.XMLDOM");
        xml.async = false;
        xml.loadXML(data);
      } else {
        xml = data;
      }
        //Get total number of products in the category
        $(xml).find('dataroot').each(function() {
            var pTemp = $(this).attr('count');
            catName = $(this).attr('catTitle');
            console.log(catName);
            pTotal = Number(pTemp);
        });
         //Fill the correct entries onto the page
         while (count<=pTotal) {
              $(xml).find('product').each(function() {
                  if (count>lCounter && count<hCounter) {
                      var pName = $(this).find('ProductName').text();
                      var pImage = $(this).find('Photo').text();
                      var pCode = $(this).find('ProductCode').text();
                      var pDesc = $(this).find('WebDescription').text();
                      if (cat.substring(0,2)=='cs') {
                          var pPrice = $(this).find('PartyShackPrice').text();
                      } else { var pPrice = $(this).find('RRP').text(); }
                      var pSize = $(this).find('size').text();
                      var pLink = '<a href="item.html?'+cat+'-'+pCode+'">';
                      var pHTML = '<div id="'+pCode+'" class="box">';
                      pHTML += pLink + '<img src="images/SMALL_IMAGE/' + pImage + '" width="70" height"100" /></a>';
                      pHTML += '<div class="boxText">';
                      pHTML += pLink + '<div class="boxTitle">'+pName+'</div></a>';
                      pHTML += '<div class="boxDesc">'+pDesc+'</div>';
                      if (pSize !== 'Not Applicable') { pHTML += '<div class="boxSize">'+pSize+'</div>'; }
                      pHTML += '<div class="boxPrice">£'+pPrice+'</div>';
                      pHTML += pLink + '<div class="boxBuy"></div></a>';
                      pHTML += '</div></div>';
                      $("#products").append(pHTML);
                  }
                  count +=1;
              });
         }
        //Work out the total number of pages the product list is split up into
        if (pTotal%50==0) { pageTotal = pTotal/50; } 
        else { pageTotal = Math.floor(pTotal/50) + 1; }
        console.log('pageTotal - ' + pageTotal);

        //Show path of the current page
        getPath(cat, catName, 0);
        //Depending on page number show previous and next buttons and display product counter
        if (pageTotal==1) { //page 1 and only one page
            $("#prev").css("visibility", "hidden");
            $("#next").css("visibility", "hidden");
            $("#counter").append('1 - ' + pTotal + ' of ' + pTotal);
        } else if ((pageNum==1) && (pageTotal!=1)) { //page 1 and multiple pages
            $("#prev").css("visibility", "hidden");
            $("#next").append('<a href="products.html?'+cat+'-'+(pageNum+1)+'">Next &gt;&gt;</a>');
            $("#counter").append('1 - 50 of ' + pTotal);
        } else if ((pageNum==pageTotal) && (pageTotal!=1)) { //last page when theres more than 1 page 
            $("#next").css("visibility", "hidden");
            $("#prev").append('<a href="products.html?'+cat+'-'+(pageNum-1)+'">&lt;&lt; Previous</a>');
            $("#counter").append((((pageNum-1)*50)+1) + ' - ' + pTotal + ' of ' + pTotal);
        } else { // a middle page
            $("#next").append('<a href="products.html?'+cat+'-'+(pageNum+1)+'">Next &gt;&gt;</a>');
            $("#prev").append('<a href="products.html?'+cat+'-'+(pageNum-1)+'">&lt;&lt; Previous</a>');
            $("#counter").append((((pageNum-1)*50)+1) + ' - ' + (pageNum * 50) + ' of ' + pTotal);
        }
        //Display page number
        $("#currentPage").append(' ' + pageNum + ' of ' + pageTotal);
    },
    error: function() { alert('failure'); }
});
});

此外，IE 应该调用成功警报或错误警报，但在打开开发人员窗口并刷新页面之前，它都不会调用。

谢谢