Toggler.

toggler.js

/**
 * Toggle everything!
 * 
 * Options
 * 
 * data-toggle="<selector>"                           The element that should be toggled.
 * data-toggle-class="<classname>"    [optional]      The classname that should be toggled on the target. If empty, display will be toggled
 * data-toggle-alt-html="<content>"   [optional]      Alternate content that should be displayed in the toggling element
 * data-toggle-duration="<duration>"  [optional]      Duration of the effect. Instant if empty.
 * data-save-state="<reference>"      [optional]      Save the state of the toggle in a a cookie. Requires $.cookie
 *
 * Example:
 * <a href="#" data-toggle="#some-form" data-toggle-alt-html="Hide form">Show form</a>
 * <form action="" id="some-form"><button type="submit">Submit it!</button></form>
 * 
 */
$('[data-toggle]').click(function() {
    var $this = $(this);
    var ref = $(this).data('toggle');
    if ($(this).data('toggle-alt-html')) {
         if ($(this).data('toggle-alt-html') == $(this).html()) {
             $(this).html($(this).data('original-html'));
         } else {
            $(this).data('original-html', $(this).html());
            $(this).html($(this).data('toggle-alt-html'));
        }
    }

    var duration = $(this).data('toggle-duration') || 0;

    if ($(this).data('toggle-class')) {
        $(ref).toggleClass($(this).data('toggle-class'));
        if ($(this).data('save-state')) {
            // data-save-state should contain a reference that can be used for a cookie name
            $.cookie($(this).data('save-state') + '-toggled', !$(ref).hasClass($(this).data('toggle-class')));
        }
    } else {
        $(ref).toggle(duration, function() {
            if ($this.data('save-state')) {
                // data-save-state should contain a reference that can be used for a cookie name
                $.cookie($this.data('save-state') + '-toggled', $(this).is(':visible'));
            }
        });
    }

    $(this).toggleClass('active');

    if ($(this).is('a')) {
        return false;
    }
});