function invertCheckboxes (selector)
{
	if (selector != '')
	{
		var checks = $(selector);
		if (checks.length > 0)
		{
			checks.each (function ()
			{
				if (!$(this).is (':checked')) { $(this).attr ('checked', 'checked'); }
				else { $(this).removeAttr ('checked'); }
			});
		}
	}
}

function toggleElement (toggle)
{
	jQuery(toggle).toggle ();
}