$(document).ready(function()When triggered in the master page, a page layout or even from within the default Content Editor WebPart, this script will enable toggling the visibility of the webparts on the page with a single click on their title. It also works when the default chrome state is minimized, bypassing the default behaviour.
//display the hand cursor over the title table rows for each webpart and hook to the "onclick" event
$("tr.ms-WPHeader").css("cursor", "pointer").css("cursor", "hand").bind("click", function ()
//get the div element nesting the webpart contents: the navigation is based on standard webpart rendering behaviour
var divElement = $(this).parents('tr:first').siblings('tr:first').children('td:first').children('div:first');
//and togle its visibility status
On a side note, I think it would be great to see more out-of-the-box jQuery action in the next version of SharePoint, now that it officially supported in Visual Studio 2010.