function extendedSearchShow(evt)
{
	var elem  = Event.element(evt);
	
	elem.addClassName('hidden');			
	searchPreferenceElement().show();	
}
function extendedSearchHide(evt)
{
	var elem  = Event.element(evt);
	
	searchPreferenceElement().hide();
	$('show-preference').removeClassName('hidden');		    
}

Event.observe($('show-preference'), 'click', extendedSearchShow);
Event.observe($('close-preferences'), 'click', extendedSearchHide);

function searchPreferenceElement()
	{
	    return $('global-search-preference');
	}