jQuery Grid Plugin - jqGrid

I'm so frustrated. Been searching examples and forums for 3 days trying to get a tree grid to show.

Any help would be so appreciated.

Here is my header:

<link rel="stylesheet" type="text/css" media="screen" href="css/smoothness/jquery-ui-1.9.1.custom.css" />

<link rel="stylesheet" type="text/css" media="screen" href="css/ui.jqgrid.css" />

<link rel="stylesheet" type="text/css" media="screen" href="css/jquery.ui.accordion.css" />

<link rel="stylesheet" type="text/css" media="screen" href="css/searchFilter.css" />

<style>

body {font-size:10px;

}

</style>

<script src="js/jquery-1.8.3.min.js" type="text/javascript"></script>

<script src="js/jquery-ui-1.9.1.custom.min.js"></script>

<script src="js/grid.locale-en.js" type="text/javascript"></script>

<script src="js/jquery.jqGrid.min.js" type="text/javascript"></script>

Here is my body:

<div id="wrapper"  style="background-color:#FFFFFF">
 <div id="dtables" style="width:50%;float:left;">
  <h3>Tables</h3>
   <div id="tblOutput">
    <table id="gridPeople"></table>
    <div id="plist485"></div>
    <table id="gridProduct"></table>
    <table id="gridProcess"></table>
    <table id="gridPerformance"></table>
   </div>
  <h3>Status</h3>
   <div>
   </div>
 </div>
 
 <div id="gauges" style="width:50%;float:right">
 </div>
</div>

Here is my script:

jQuery.extend($.fn.fmatter , {

PointFmatter : function(cellvalue, options, rowdata) {

if (cellvalue > 90) {

return '<span style="color:blue;">' + cellvalue + '</span>';

} else if (cellvalue > 80) {

return '<span style="color:green;">' + cellvalue + '</span>';

} else if (cellvalue > 70) {

return '<span style="color:orange;">' + cellvalue + '</span>';

} else {

return '<span style="color:red;">' + cellvalue + '</span>';

}

}

});

jQuery("#gridPeople").jqGrid({

treeGrid: true,

treeGridModel: 'adjacency',

url:'data/people_995.xml',

datatype: "xml",

ExpandColumn : 'Subjectname',

height: 'auto',

// hiddengrid: true,

colNames:['id','Subject','measure','Week', 'MTD', 'QTD','YTD'],

viewRecords:true,

colModel:[

{name:'id', index:'id', hidden:true,key:true},

{name:'Subjectname',index:'Subjectname', width:140},

{name:'SubSubjectName',index:'SubSubjectName', width:140, align:'right'},

{name:'WTD',index:'WTD', width:60, align:'center', sorttype:'float',formatter:'PointFmatter'},

{name:'MTD',index:'MTD', width:60, align:'center', sorttype:'float',formatter:'PointFmatter'},

{name:'QTD',index:'QTD', width:60, align:'center', sorttype:'float',formatter:'PointFmatter'},

{name:'YTD',index:'YTD', width:60, align:'center', sorttype:'float',formatter:'PointFmatter'}

],

caption: "<span style='margin-left:20px'>People</span>"

});

And here is my xml:

<?xml version="1.0″?>

<Rows>

<page>1</page>

<total>2</total>

<records>6</records>

<Row id="1″>

<Subjectname>Motor Vehicle Incidents</Subjectname>

<SubSubjectName> </SubSubjectName>

<WTD>70</WTD>

<MTD>75</MTD>

<QTD>80</QTD>

<YTD >81</YTD>

<level>0</level>

<parent></parent>

<isLeaf>false</isLeaf>

<expanded>false</expanded>

</Row>

<Row id="2″>

<Subjectname>Motor Vehicle Incidents</Subjectname>

<SubSubjectName>Motor Vehicle Incidents</SubSubjectName>

<WTD>0</WTD>

<MTD>0</MTD>

<QTD>0</QTD>

<YTD>0</YTD>

<level>1</level>

<parent>1</parent>

<isLeaf>true</isLeaf>

<expanded>false</expanded>

</Row>

<Row id="3″>

<Subjectname>OSHA Incidents</Subjectname>

<SubSubjectName/>

<WTD>0</WTD>

<MTD>0</MTD>

<QTD>0</QTD>

<YTD>0</YTD>

<level>0</level>

<parent></parent>

<isLeaf>false</isLeaf>

<expanded>false</expanded>

</Row>

<Row id="4″>

<Subjectname>OSHA Incidents</Subjectname>

<SubSubjectName>OSHA Incidents</SubSubjectName>

<WTD>0</WTD>

<MTD>0</MTD>

<QTD>0</QTD>

<YTD>0</YTD>

<level>1</level>

<parent>3</parent>

<isLeaf>true</isLeaf>

<expanded>false</expanded>

</Row>

<Row id="5″>

<Subjectname>Vacant Rate F1, 2B, 4</Subjectname>

<SubSubjectName/>

<WTD>0</WTD>

<MTD>0</MTD>

<QTD>0</QTD>

<YTD>0</YTD>

<level>0</level>

<parent></parent>

<isLeaf>false</isLeaf>

<expanded>false</expanded>

</Row>

<Row id="6″>

<Subjectname>Vacant Rate F1, 2B, 4</Subjectname>

<SubSubjectName>Vacant Rate F1, 2B, 4</SubSubjectName>

<WTD>0</WTD>

<MTD>0</MTD>

<QTD>0</QTD>

<YTD>0</YTD>

<level>1</level>

<parent>5</parent>

<isLeaf>true</isLeaf>

<expanded>false</expanded>

</Row>

</Rows>