1:  <script>

   2:  $(window).ready(function() {$.getJSON("/Power/PowerStatList/",{ id: "0", sid: "1;2;3", rid: Math.round(Math.random() * 10) },

   3:  function(json) {

   4:      jsonval = eval(json);

   5:      for (var j = 0; j < jsonval.length; j++) {

   6:          $("#GridView1 tr:last").after("<tr id='" + j + "'></tr>");

   7:          var m = 0;

   8:          for (var i in jsonval[j]) {

   9:              if (j == 0) {

  10:                  $("#tableHeader").append("<td id='h" + m + "'>" + i + "</td>");

  11:              }

  12:              $("#GridView1 tr:last").append("<td>" + jsonval[j][i] + "</td>");

  13:              m++;

  14:          }

  15:      }

  16:      $("#GridView1 tr:first").before("<tr id='newHeader'></tr>");

  17:      var temp = "";

  18:      var col = 1;

  19:      var trs = {}

  20:      $.each($("#tableHeader td"), function(i, td) {

  21:   

  22:          if ($(td).text().indexOf('_') > 0) {

  23:              if (temp != "") {

  24:                  if (temp != $(td).text().split('_')[0]) {

  25:                      $("#GridView1 tr:first").append("<td colspan=" + col + ">" + temp + "</td>");

  26:                      col = 1;

  27:                  }

  28:                  else {

  29:                      col++;

  30:                  }

  31:              }

  32:              temp = $(td).text().split('_')[0];

  33:          }

  34:          else {

  35:              $("#GridView1 tr:first").append("<td rowspan=2>" + $("#h" + i).text() + "</td>");

  36:              $("#h" + i).remove();

  37:          }

  38:          $(td).text($(td).text().split('_')[0]);

  39:      });

  40:      $("#GridView1 tr:first").append("<td colspan=" + col + ">" + temp + "</td>");

  41:      

  42:  });

  43:  });

  44:      

  45:      </script>

  46:   

  47:      <table border=1 id="GridView1">

  48:          <tr id="tableHeader">

  49:             

  50:          </tr>

  51:          

  52:      </table>