jquery - how to call php function from jqgrid button -

i'm trying when submit value jqgrid box on multiple selected rows update data of specific columns.my code when click ok in jqgrid nothing happens , function not called :

 jquery(document).ready(function(){  jquery('#list1').jqgrid('navbuttonadd', '#list1_pager',      {         'caption'      :  'resubmit',          'buttonicon'   : 'ui-icon-pencil',          'onclickbutton': function()     {     var str = prompt("please enter data of column")         var selr = jquery('#list1').jqgrid('getgridparam','selarrrow');             $(selector).load('updatestatus.php', {'string': str,'box[]'  : selr })         },         'position': 'last'     });  }); 

the function updates column of table:

 function update_data($data)     { // if bulk operation requested, (default otherwise)  if ($data["params"]["bulk"] == "set-status")       {        $selected_ids = $data["cont_id"];        $str = $data["params"]["data"];             mysql_query("update out_$cmpname set cont_status = '$str' cont_id in ($selected_ids)");        die;    }       } 

i'm new jqgrid , jquery.what can call , execute function when click ok? in advance!

you'll need ajax-call this. see you're using jquery, have @ http://api.jquery.com/load/

with function, can load php or html jquery element.