how to jquery Load() function no load error.aspx page in file webconfig when load function have error.

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Javascript

jQuery

My project have error.aspx page. I used load() funtion get file text to div tag(id resultBaiVietCon),but when text file is not folder, content of error page is loaded div tag, how to content of error page no load dig tag?

$(document).ready(function () {
          $("#BaiGioiThieu").click(function () {
              $("#resultBaiVietCon").load("CDBaiViet/k14/" + maSo + "/TextFile.txt", function (responseTxt, statusTxt, xhr) {
                  if (statusTxt == "success")
                      {
                     alert("External content loaded successfully!"); 
                    $("#resultBaiVietCon").show();                   
                     
                                         });
                   }
                  if (statusTxt == "error")
                       $("#resultBaiVietCon").show(); 
                       alert("Error: " + xhr.status + ": " + xhr.statusText);
              });
          });
      });

when have error content of #resultBaiVietCon(id of div tag) is content of error.aspx page