jQuery Grid Plugin - jqGrid

Hi, people

when i try do loop with in my grid i receive this error l.p.colModel[...].name is null or not is an object. Its possible what this is error is for my data but i cant see where someone know where i can download jqgrid.js but not minified?

this is my function pls if you see something what i dont send my you comments

thks

function AddItemsToCar()

{ 

var grid = $(ID_GRID_DETAILSEXP);

var gridpago = $(ID_GRID_PAY);

var ids = grid.getDataIDs(); 

gridpago.clearGridData(true);

for (var i=0;i<ids.length;i++)

{

var rowid = ids[i];

var row = grid.getRowData(rowid); <== the error is raised here

if ( row && row.selitem == 1)

{

var myrow = new Object();

myrow.Recnum = row.Recnum;

myrow.requestId = row.requestId;

myrow.creation_dt = row.creation_dt;

myrow.agentgrouptext = row.agentgrouptext;

myrow.detailId = row.detailId;

myrow.group = row.group;

myrow.paysuggested_dt = row.paysuggested_dt;

myrow.paydnights = row.paydnights;

myrow.paydamount = row.paydamount;

myrow.paydexchangerate = row.paydexchangerate;

myrow.pay_dt = row.pay_dt;

gridpago.jqGrid(__gMessages.newrow, myrow.Recnum, myrow);

}

} 

$(ID_CAR_SECCION).show(); 

}