function setParty() {
	$('tabParty').addClass('current');
	$('tabCouch').removeClass('current');
	$('sheetCouch').addClass('hidden');
	$('sheetParty').removeClass('hidden');
}

function setCouch() {
	$('tabCouch').addClass('current');
	$('tabParty').removeClass('current');
	$('sheetParty').addClass('hidden');
	$('sheetCouch').removeClass('hidden');
}

function setTabSheet(tabName) {
	setTab(tabName);
	hideAll("sheet")					
	sheetName = 'sheet' + tabName;
	$(sheetName).show();
}

function setTab(tabName) {
	var tabs = $$('.tab');
	tabs.each(function(elTab) {
		elTab.removeClass('current');
	});		
	thisTab = $('tab' + tabName);
	thisTab.addClass('current');
}

function	hideAll(useClass) {
	var elems = $$('.' + useClass);
	elems.each(function(elem) {
		Element.hide(elem);
	});	
}

function	showAll(useClass) {
	var elems = $$('.' + useClass);
	elems.each(function(elem) {
		elem.show();
	});	
}