how to change the content of a header cell in dataTables?
$( oSettings.aoColumns[i].nTh).text();

$( oSettings.aoColumns[i].nTh).text("some text");
$( oSettings.aoColumns[i].nTh).html("<a href='#'>some button</a>");

"aoColumns": [
    /* Select */    {"bSortable": false },
    /* Type */      {"sClass": "jqmSorter"},
    /* From */      {"bSortable": false },
    /* Status */    {"bSortable": false },
],

"fnHeaderCallback": function( nHead ) {
       $(nHead).closest('thead').find('.jqmSorter').each( function () {
          var sortTitle = $(this).text(),
          sortButton =
             $( document.createElement( "a" ) ).buttonMarkup({
                  shadow: false,
                  corners: false,
                  theme: 'a',
                  iconpos: "right",
                  icon: "ui-icon-radio-off"
                  })
             sortButton.find('.ui-btn-text').text(sortTitle);
             $(this).html( sortButton )
             sortButton.addClass("colHighTrigger");
             });
       }

$(nRow, '.your_class').html('Your HTML Values');