function show_request_params() {

$('#params_link').hide();
$('#request_params').show();

}

function show_view(page_id){

$('#show_sample_summary, #show_sample_sql, #show_sample_detail').hide();
$('#' + page_id).show();

}

function toggle_row_class(theLink) {

var image = $('img', theLink).first();
var visible = toggle_row_class_for_image(image);
image.attr('src', (visible ? EXPANDED_IMAGE : COLLAPSED_IMAGE));

}

function toggle_row_class_for_image(image) {

var clazz = image.attr('class_for_children');
var elements = $('#trace_detail_table').find('tr.' + clazz);
if (elements.size() == 0) return;
var visible = !elements.first().is(':visible');
show_or_hide_elements(elements, visible);
return visible;

}

function stack_trace_ids(unique_id) {

return {'show': 'show_rails_link' + unique_id, 'hide': 'hide_rails_link' + unique_id,
        'app': 'application_stack_trace' + unique_id, 'full': 'full_stack_trace' + unique_id};

}

function show_rails(unique_id) {

traces = stack_trace_ids(unique_id);
$('#' + traces.full).show();
$('#' + traces.app).hide();
$('#' + traces.show).hide();
$('#' + traces.hide).show();

}

function hide_rails(unique_id) {

traces = stack_trace_ids(unique_id);
$('#' + traces.full).hide();
$('#' + traces.app).show();
$('#' + traces.show).show();
$('#' + traces.hide).hide();

}

function show_or_hide_class_elements(clazz, visible) {

var elements = $('#trace_detail_table').find('tr.' + clazz);
show_or_hide_elements(elements, visible);

}

function show_or_hide_elements(elements, visible) {

if(visible) {
  elements.show();
} else {
  elements.hide();
}

}

function mouse_over_row(element) {

clazz = $(element).attr('child_row_class')
$(element).css('cssText', 'background-color: lightyellow');

}

var g_style_element; function get_cleared_highlight_styles() {

if (!g_style_element)
{
  $('head', document).first().append('<style id="highlight_styles" />');
  g_style_element = $('#highlight_styles');
}
else {
  g_style_element.empty();
}
return g_style_element;

}

function mouse_out_row(element) {

$(element).css('cssText', '')

}

function get_parent_segments() {

return $('#trace_detail_table').find('img.parent_segment_image');

}

function expand_or_contract_segments(expand_or_contract) {

var parent_segments = get_parent_segments();
parent_segments.attr('src', (expand_or_contract ? EXPANDED_IMAGE : COLLAPSED_IMAGE))
parent_segments.each(function (index, element) {
  show_or_hide_class_elements($(element).attr('class_for_children'), expand_or_contract);
});

}

function expand_all_segments() {

expand_or_contract_segments(true);

}

function collapse_all_segments() {

expand_or_contract_segments(false);

}

function jump_to_metric(metric_name) {

highlight($('tr.' + metric_name, '#trace_detail_table'))
expand_all_segments();

} function highlight(elements) {

elements.css('background-color', 'lightyellow');

}