function please_wait()
{
	var contentId = $('contooContent') ? 'contooContent' : 'content';
	$(contentId).style.display = 'none';
	$('pleaseWait').style.display = 'block';
	$('pleaseWait').style.zIndex = '20';
	/* $('pleaseWait') should permit text. content is sometimes overriden to display special messages */
}