jQuery Grid Plugin - jqGrid

jqgrid 3.4.3

FF 3.0.9

IE 7.0.5730.11

I have implemented back button functionality using rsh.  Everything works great in FF.  In IE, everything works except when I click on the search button, the search form does not show.  I have reproduced the problem in the simplified version of my code below.  The issue is resolved if I remove the window.dhtmlHistory.create().

I have tried various solutions from the web but nothing changes the behavor.  Can anyone suggest a solution?

Thanks,

Jerry

<script src="jquery-1.3.2.js" type="text/javascript"></script>
<script src="jquery.jqGrid.js" type="text/javascript"></script>
<script src="js/jqModal.js" type="text/javascript"></script>
<script src="js/jqDnR.js" type="text/javascript"></script>
<script type="text/javascript" src="js/min/rsh.compressed.js"></script>

<script type="text/javascript">
window.dhtmlHistory.create({
 toJSON: function(o) {
  return JSON.stringify(o);
 }
 , fromJSON: function(s) {
  return JSON.parse(s);
 }
});

function onHistoryChange(newLocation, retHistoryData) {
//code to restore history state for newLocation
};

$(document).ready(function(){

 dhtmlHistory.initialize();
 dhtmlHistory.addListener(onHistoryChange);

 $("#list").jqGrid({
  url:'cem_db_if.php?q=1&table_name=DT_Cemetery',
  colNames:['Cemetery','USGS GNIS ID', 'County','USGS map','Location'],
  colModel :[
    {name:'cem_name', index:'cem_name', width:200, align:'center'},
    {name:'cem_usgs', index:'cem_usgs', width:100, align:'center'},
    {name:'cem_county_name', index:'cem_county_name', width:100, align:'center' },
    {name:'cem_map', index:'cem_map', width:100, align:'center'},
    {name:'cem_description_short', index:'cem_description_short', width:400, align:'center'} ],
  height:'auto',
  pager: '#pager',
  rowNum:15,
  rowList:[15,30,60,120],
  sortname: 'cem_name',
  sortorder: 'asc',
  viewrecords:true,
  imgpath: 'themes/basic/images',
  caption: 'TNGenWeb Cemetery Database - Cemeteries',
  shrinkToFit:true,
  width:800,
  subGrid:true
 }).navGrid('#pager',{edit:false,add:false,del:false});

 $.jgrid.search = { caption: 'Search...', Find: 'Find', Reset: 'Reset',
  odata : ['equals', 'not equal', 'less', 'less or equal','greater','greater or equal',
   'begins with','ends with','contains' ]};
 $.extend($.jgrid.search,{Find:'Search'});
});

</script>