//
// Functions for displaying browse page rollups.
//

var lastCategory = "nothing";
var lastRollup = "nothing";

function showCategory(what)
{
	Rollup.clear();

	if (lastCategory != "")
		$(lastCategory).style.display = "none";
	
	lastCategory = what;
	$(lastCategory).style.display = "";
}

function getRollup(forum)
{
	Rollup.clear();

	props = {
		method: 'get', 
		onComplete: cbGetRollup
	};
	uri = '';
	new Ajax.Request(uri + "/discuss/forum_feed_ajax?forum=" + forum, props);
}

function cbGetRollup(request)
{
//	alert(request.responseText);
	var dom = request.responseXML;
	var root = dom.getElementsByTagName('root');
	var forum = root[0].getAttribute('forum');
	var folder = root[0].getAttribute('folder');
	var threads = dom.getElementsByTagName('thread');

	Rollup.start(forum, folder);

	if (threads.length > 0)
	{
		for (var i = 0; i < threads.length; i++)
		{
			var text = threads[i].getAttribute('text');
			var href = threads[i].getAttribute('href');

			Rollup.addItem(text, href, 'sideways-entry');
		}
		Rollup.addItem('Post New Entry', folder, 'sideways-entry sideways-footer');
	}
	else
	{
		Rollup.addItem('Start a New Discussion', folder, 'sideways-entry');
	}
}