jQuery Grid Plugin - jqGrid

jqgrid has been great for me so far and I tried the navigator options

the issue I face is having different urls for editing..

onload whichever edit/add button is clicked first then the option is taken.. and the options that i set below will be disregarded…

say i click on edit.. the edit url will be edit.jsp .. my add function will also be linked to edit.jsp…

is there a way to specify? or what is passed through to notify that it is an edit/add/delete??

jQuery("#search").jqGrid({       
       url:'data.jsp',
    datatype: "json",
        colNames:['id','filename'],
        colModel: [{name:'id',index:'id',width:255,sortable:true,editable:false},
                {name:'filename',index:'filename',width:255,sortable:true,editable:true}
               
        ],
       rowNum:10,
       rowList:[10,20,30],
       imgpath: gridimgpath,
       pager: jQuery('#pagersr'),
       sortname: 'id',
        viewrecords: true,
        sortorder: "desc",
        loadError: function (xhr,st,err){
            alert("Error"+": "+st+"\\n"+xhr.responseText);
        },
        height:'100%',
       
        caption:"File Listing"

.navGrid('#pagersr',
{}, //options
{height:480,url:'edit.jsp',reloadAfterSubmit:true}, // edit options
{height:480,url:'add.jsp',reloadAfterSubmit:true}, // add options
{reloadAfterSubmit:true}, // del options
{} // search options
);
});