function sort_grid(order) {
    $('#grid_form #Page').val('1');

    // alternate between asc/desc
    var current_order = $('#grid_form #sort').val();
    if (current_order == order) {
        order = order + ' desc';
    }
    
    $('#grid_form #sort').val(order); 
    $('#grid_form').submit();
}

function page_grid(page) {
    $('#grid_form #Page').val(page); 
    $('#grid_form').submit();
}

function page_size_OnChange(sender) {
    var dropdown = $(sender);
    var pageSize = dropdown.val();
    if (pageSize > 200) {
        if (!confirm("Warning, by selecting this page size, it may take several minutes to retrieve the results.  The map may also be slow to draw.  Are you sure you want this much data?"))
            return;
    }

    $('#grid_form #PageSize').val(pageSize);
    $('#grid_form #Page').val(1);
    $('#grid_form').submit();
}