jQuery Grid Plugin - jqGrid

Hello everybody,

I'm new with this plug in and I try to use it. But, I have 2 problems:

1° When I try to display the result of the JSON querie, whole result is displayed in once and not by pagination. I work in ColdFusion; I create a JSON file (see the example). I show the file of configuration of the "jqGrid." 

JSON file:

{ totalpages:'10', currpage:'1', totalrecords:'378', rows : [{id:'1',cell:['0100000','1. FRUIT FRESH OR FROZEN; NUTS','0']}, ... }

<script type="text/javascript">
    jQuery(document).ready(function(){
        jQuery("#list").jqGrid({
            url:'index.cfm?event=MRL_Data',
            datatype: 'json',
            mtype: "GET",
            colNames:['Code','Commodity', 'MRL'],
            colModel :[ {name:'COMMODITIES_CODE', index:'COMMODITIES_CODE asc', width:50, align:'center', sortable:true, sorttype:'string'},
                        {name:'NOM', index:'NOM', width:300, align:'left', sortable:false, sorttype:'string'},
                        {name:'SUB_10', index:'SUB_10', width:50, align:'center', sortable:false, editable:true, sorttype:'string'}],
            toolbar: [true, "top"],
            width: 500,
            height:450,
            pager: jQuery("#pager"),
            recordtext: 'nombre de produits:',
            pgbuttons: true,
            rowNum:40,
            rowList:[40,60,100],
            imgpath: '../resources/js/themes/coffee/images',
            caption: 'MRL management',
            onSelectRow: function(id){
                if(id && id!==lastsel){
                //jQuery(’#rowed3′).restoreRow(lastsel);
                    jQuery("#list").saveRow(id);
                    jQuery("#list").editRow(id,true);
                    lastsel=id;
                }
            }
        }).navGrid('#pager', {edit: true, add: false, del: false,search: true,position:"right"});
    });
</script>

2° When the result is displayed, look the navigation bar. There are 3 problems: 
- On the left, the navigation buttons  are over the buttons of edition
- On the right, the buttons of navigations don't appear. 
- Besides the n° of page and another information don't appear.

As if the problem was in the CSS level. 
look the print screen  below of this topic
 
Would someone be able to help me? 
Thank you for advance.

Best regards

Andre