theElement = 0;

var doLetters = function() {
	theHeight = 0;
	$('letterscontent').getChildren('div').each(function(el){
		if (el.getSize().y > theHeight) {
			theHeight = el.getSize().y;
		}
		el.setStyle('position', 'absolute');
		el.setStyle('left', 0);
		el.setStyle('top', 0);
		if (theElement != 0) {
			el.setStyle('opacity', 0);
		} else {
			theElement = el.get('id');	
		}
	});
	$('letterscontent').setStyle('height',theHeight+10);
	
	$('lettersindex').getChildren('li').each(function(el){
		el.getFirst('a').addEvent('click', doSelection);
	});
}

var doSelection = function(event) {
	
	event.stop();
	theLink = this.get('href').split('#')[1];
	theLink = theLink.split('?')[0];
	if (theElement != theLink) {
		if (theElement != 0) {
			$(theElement).get('tween').start('opacity',0);
		}
		theElement = theLink;
		$(theElement).get('tween').start('opacity',1);
	}
}

window.addEvent('domready', doLetters);