jQuery Grid Plugin - jqGrid

Hi,

Need a little help. I've succesfuly loaded basic grid using xml from 

a database. The problem is when I try to add navigation buttons, these

buttons does not show i.e. (refresh, edit) The select function works fine if i do not add this code =>

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jQuery("#filetable").navGrid("#filepager",{edit:false,add:faldse,del:false});

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Below is my code:

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$(document).ready(function(){
    jQuery("#filetable").jqGrid({
        url:'process/proc.list.file.php',
        datatype: "xml",
        //mtype: 'GET',
        colNames:['File ID', 'Project', 'Style', 'File Name', 'Length', 'Size', 'Arrival', 'TAT'],
        colModel:[
            {name:'fld_fileid', index:'fld_fileid', width:55},
            {name:'fld_project_name', index:'fld_project_name', width:120},
            {name:'fld_style', index:'fld_style', width:70},
            {name:'fld_oldname', index:'fld_oldname', width:400},
            {name:'fld_file_length', index:'fld_file_length', width:70},
            {name:'fld_filesize', index:'fld_filesize', width:70},
            {name:'fld_arrival_time', index:'fld_arrival_time', width:120},
            {name:'fld_tat', index:'fld_tat', width:120}
        ],
        rowNum:10,
        rowList:[10,20,30],
        imgpath: 'plugins.jqGrid/themes/green/images',
        pager: jQuery('#filepager'),
        sortname: 'id',
    viewrecords: true,
    sortorder: "desc",
        multiselect: true,
        caption: "Multi Select Example"
    });
    jQuery("#filetable").navGrid("#filepager",{edit:false,add:faldse,del:false});
    jQuery("#a1").click( function(){
        var id = jQuery("#filetable").getGridParam('selrow');
        if (id) {
                var ret = jQuery("#filetable").getRowData(id);
                alert("fld_fileid="+ret.fld_project_name+"fld_project_name="+ret.fld_project_name+"...");
        } else { alert("Please select row");}
    });
});

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Am I doing something wrong here?