title: Display grand total in the footer so that value remains same on page change for load once true
body: <p>I am implementing JQGrid and sending the datatype as JSON. Also, I've set <code>loadonce</code> as  <code>true</code>, and I am able to get the footer summary correctly in the footer.</p>
  
  <p>However, on page navigation, the total value changes according to the row data in each page. My requirement is to display the grand total of all the records of the particular column so that the footer value remains same on page change.</p>
  
  <p>I am using the following code to get the footer summary:</p>
  
  <pre><code>var grid=$("#mygrid");
  sum = grid.jqGrid('getCol','amount',false,'sum');
  grid.jqGrid('footerData','set',{ID:'Total:',amount:sum});
  </code></pre>