code: function findFormField(columnName) {
          var thisFormBody;
          // There's no easy way to find one of these columns; we'll look for the comment with the columnName
          var searchText = RegExp("FieldName=\"" + columnName.replace(/[-[\]{}()*+?.,\\^$|#\s]/g, "\\$&") + "\"", "gi");
          // Loop through all of the ms-formbody table cells
          $("td.ms-formbody, td.ms-formbodysurvey").each(function () {
              // Check for the right comment
              if (searchText.test($(this).html())) {
                  thisFormBody = $(this);
                  // Found it, so we're done
                  return false;
              }
          });
          return thisFormBody;
      }
docs: Finds the td which contains a form field in default forms using the comment which contains: <!--  FieldName="Title" FieldInternalName="Title" FieldType="SPFieldText" --> as the "anchor" to find it. Necessary because SharePoint doesn't give all field types ids or specific classes.