function showHistoryItem(id) {
	var dates = document.getElementsByClassName('year');
	for(i=0;i<dates.length;i++) {
		dates[i].className = 'year';
	}
	$('date_'+id).blur();
	$('date_'+id).className = 'year active';
	var items = document.getElementsByClassName('historyItem');
	for(i=0;i<items.length;i++) {
		items[i].style.display = 'none';
	}
	Effect.Appear('ttc_'+id, { duration:0.5 });
}

function showRef(id) {
	var refs = document.getElementsByClassName('refLink');
	for(i=0;i<refs.length;i++) {
		refs[i].className = 'refLink';
	}
	$('refLink_'+id).blur();
	$('refLink_'+id).className = 'refLink active';
	var newHeight = $('r_'+id).getHeight + 240;
	$('content').setHeight = newHeight;
	//document.getElementById('content').style.height = newHeight;
	Effect.Appear('r_'+id, { duration:0.5, delay:0.2});
	var items = document.getElementsByClassName('refDetail');
	for(i=0;i<items.length;i++) {
		if(items[i].id != id && items[i].style.display != 'none') {
			Effect.Fade(items[i], { duration:0.2 });
			//items[i].style.display = 'none';
		}
	}
}