title: Get jqgrid DOM ID from event triggers
body: <p>I'm extending jqgrid default options:</p>
  
  <pre><code>$.extend(
      $.jgrid.defaults,
      {
          datatype: "json",
          jsonReader:
          {
              root: "rows",
              page: "page",
              total: "total",
              records: "records",
              repeatitems: false,
              cell: "cell",
              id: "id"
          },
          height: 'auto',
          rowNum: 20,
          recordtext: 'record',
          loadtext: 'loading',
          imgpath: 'path',
          viewrecords: true,
          multiselect: true,
          postData: { random: Math.random() },
          rowList: [10, 20, 30, 50],
          beforeRequest: function() { OnBeforeRequestFunct(); }, 
          onPaging: function() { OnPagingPersonalize(); },
          gridComplete: function() { if(editedRowIds.length &gt; 0)
                                          refreshSelection(); 
                                   }
      }
  );
  </code></pre>
  
  <p>So i need to pass caller jqgrid id to OnBeforeRequestFunct() when trigger event <strong>beforeRequest</strong> is fired from grids.</p>