js控制gridview

var lastCheck = null;
        function SelectValue(cub1) {
            if (lastCheck != null)
                lastCheck.checked = false;
            lastCheck = cub1;
            for (i = 1; i < document.all.GridView1.rows.length; i++) {
                var chb = document.all.GridView1.rows(i).cells(0).children(0);
                if (chb.checked) {
                    temp = document.all.GridView1.rows(i).cells(2).innerText;
                    document.getElementById("txtRemark").value += temp;
                }
            }
        }