If you want to hide the Web Debug Details/Menus but also want to have quick access when you need it.

Then this could help you. Just copy this in a js file or print it in your layout:

/*
 * HIDE WEB DEBUG DETAILS ON LAUNCH
 */
Event.observe(window, 'load', function(){
    // check if web debug is on
    if ($('sfWebDebugBar'))
        sfWebDebugToggleMenu();
});