Retrieve SubGrid Records MS CRM 2013 using JavaScript

function RetrieveSubGridRecords() {
    if (document.getElementById("Sub Grid Name")) {
        var grid = document.getElementById("Sub Grid Name").control;
        for (var rowNo = 0; rowNo < grid.GetRecordsFromInnerGrid().length; rowNo++)
            for (var cellNo = 0; cellNo < grid.GetRecordsFromInnerGrid()[rowNo][3].cells.length; cellNo++)
                alert(grid.GetRecordsFromInnerGrid()[rowNo][3].cells[cellNo].outerText);    }    else {
        setTimeout("RetrieveSubGridRecords();", 2500);
    }}

Hope it Helps