jQuery Grid Plugin - jqGrid

I have tried to select invisible row with the option.

Not scrolling.

I hare tried also the online example scroll whith dinamic row select. Malfunctioning not show the last row.

I have modified this example will not work (i have upgraded all to last version 4.1.1)

loadcml.js

var sw = 0;
jQuery("#list15").jqGrid({   
    scrollrows : true,   
    url:'server.php?q=2',
 datatype: "json",
    colNames:['Inv No','Date', 'Client', 'Amount','Tax','Total','Notes'],
    colModel:[
     {name:'id',index:'id', width:55},
     {name:'invdate',index:'invdate', width:90},
     {name:'name',index:'name', width:100},
     {name:'amount',index:'amount', width:80, align:"right"},
     {name:'tax',index:'tax', width:80, align:"right"},  
     {name:'total',index:'total', width:80,align:"right"},  
     {name:'note',index:'note', width:150, sortable:false}  
    ],
 height: 150,
    rowNum:10,
    rowList:[10,20,30],
    pager: '#pager15',
    sortname: 'id',
    viewrecords: true,
    sortorder: "desc",
 loadComplete: function(){
  var ret;
  if (sw==0) {
  alert("This function is executed immediately after\n data is loaded. We try to update data in row 6.");
  ret = jQuery("#list15").jqGrid('getRowData',"6");
  if(ret.id == "6"){
   jQuery("#list15").jqGrid('setRowData',ret.id,{note:"<font color='red'>Row 6 is updated!</font>"})
  }
  
  sw = 1;}
 }
});
jQuery("#sids").click( function() {
    jQuery("#list15").jqGrid('setSelection',"6");
 //alert("Id's of Grid: \n"+jQuery("#list15").jqGrid('getDataIDs'));
});