// convenience functions

function initMagic() {
/**
 * Checkbox Group
 * Set the check all checkbox with class name 'check-all-trigger'.  Set all
 * target checkboxes with class name #check-all-id-target.
 *
 * Example: if check-all checkbox is id 'foo' then all target checkboxes 
 * should be decorated with class names 'foo-target'.
 */
    $('input[@type=checkbox].check-all-trigger').click(function(e) {
        el = this;
        $('input.'+el.id+'-target').each(function() {
            this.checked = el.checked;
        });
    });

/**
 * Expand Node
 *
 */
    $('.expand-trigger').click(function(e) {
        e.preventDefault();
        $('#'+this.id+'-expand-target').slideToggle("slow");
    });
}
$(document).ready(initMagic);

/**
 *
 *
 */
$.extend($, {
    debug: function(msg) {
        if (window.console) {
            console.debug(msg);
        } else {
            alert(msg);
        }
    }
});