Error while submitting

I have a button with Yes options or not when I want to delete a record. When I give him if he should make the submit of the page and he does not do it. The button is a gridview in webforms:

<asp:TemplateField HeaderText="Eliminar">
  <ItemTemplate>
    <asp:ImageButton ID="btnEliminar" runat="server" ImageUrl="~/Content/Images/document_delete.png" Height="22px" Width="22px" CommandName="Eliminar" AlternateText="Eliminar" />
  </ItemTemplate>
</asp:TemplateField>

  

Uncaught ReferenceError: __doPostBack is not defined       at HTMLInputElement. ( link )       at HTMLInputElement.dispatch ( link )       at HTMLInputElement.r.handle ( link )       at Object.trigger ( link )       at HTMLInputElement. ( link )       at Function.each ( link )       at n.fn.init.each ( link )       at n.fn.init.trigger       at n.fn.init.n.fn. (anonymous function) [as click]       at HTMLDivElement.click

Here is the code:

< script type = "text/javascript" >

  $(function() {
    $("[id*=btnEliminar]").removeAttr("onclick");
    $("#dialog").dialog({
      modal: true,
      autoOpen: false,
      title: "Export Access",
      width: 350,
      height: 160,
      buttons: [{
          id: "Yes",
          text: "OK",
          click: function() {
            $("[id*=btnEliminar]").attr("rel", "delete");
            $("[id*=btnEliminar]").click();
          }
        },
        {
          id: "No",
          text: "NO",
          click: function() {
            $(this).dialog('close');
          }
        }
      ]
    });
    $("[id*=btnEliminar]").click(function() {
      if ($(this).attr("rel") != "delete") {
        $('#dialog').dialog('open');
        return false;
      } else {
        __doPostBack(this.name, '');
      }
    });
  }); </script>