function harmonika(el){
	if($(el).displayed){
		new Effect.BlindUp(el, {queue: 'end', duration:0.5});
		$(el).displayed = false;
	}else{
		new Effect.BlindDown(el, {queue: 'end', duration:0.5});
		$(el).displayed = true;		
	}
	return false;
}

function init_hide(el){
	var element = $(el);
	var divs = element.getElementsByTagName('div');
	for(i = 0; i < divs.length; i++){
		if(divs[i].className == 'hidable'){
			divs[i].style.display = 'none';
		}
	}
}