function showItem(itemId) {
	showItemId = itemId.replace('item_','intro');
	$("div.intro").css('display','none');
	$("#" + showItemId + "_top").css('display','block');
	$("#" + showItemId + "_main").css('display','block');
	$("#" + showItemId + "_bottom").css('display','block');
}

$(document).ready(function() {
	$("div.relatedcontent").mouseover( function() {
		showItem( $(this).attr('id') );
	});
});