function hideAll() {
	$('content_all').fade();
};			
function showContent(string) {
	if(string == "5") {
		$$(".content_sub_page").each(function(element) { element.fade() });
	}
	new Effect.Fade('content_all',{afterFinish:function(){new Effect.Appear($('content_'+string))}});	
}			
function hideElement(string){
	new Effect.Fade('content_'+string,{afterFinish:function(){showAll();}});	
}
function showAll(){	
	$('content_all').appear();
}