function SelectAll()
   { 
     var RowCount=null;
     var ctl = 'grdAdmin_ctl';
     RowCount=<%= grdAdmin.Rows.Count %>;   //Getting number of rows in gridview
     for(var i=2;i<=RowCount+1;i++)
     {
        var ChkId=null;
        if (i<=9)
        {
        ChkId=document.getElementById(ctl+ '0' + i + '_chkSelect');
        ChkId.checked=true;
        }
        else
        {
        ChkId=document.getElementById(ctl + i + '_chkSelect');
        ChkId.checked=true;
        }
     }
     return false;
  }