var titlearray = new Array(5);
titlearray['overview'] = 'Overview';
titlearray['benefits'] = 'Benefits';
titlearray['costs'] = 'Costs';
titlearray['dataapps'] = 'Decision-Making';
titlearray['products'] = 'Data/Products';
var i         = 0;
var tempSpeed = null;
var timerID   = null;
var pause     = false;
var pagetitle = document.title.replace(/ \([\w\s&;\/]+\)/,"");


function getInformation (goal,file,view,region) {
	spin();

	// Make AJAX request, then return false to disable default href link
	new Ajax.Request('information.php',
	{	method: 'get',
		parameters: {'goal' : goal, 'file' : file, 'view' : view, 'region' : region },

		onSuccess: function(transport) {
			document.getElementById('information').innerHTML = transport.responseText;
			if (file != "economics" && file != "rss") {
				document.getElementById('email').href = "/?file=email&theme=" + goal + "&topic=" + file + "&section=" + view + "&region=" + region;
				document.getElementById('submitcontent').href  = "/?file=submit&theme%5B%5D=" + goal + "&topic=" + file + "&section=" + view + "&region=" + region;
				document.getElementById('submitcontent2').href = "/?file=submit&theme%5B%5D=" + goal + "&topic=" + file + "&section=" + view + "&region=" + region;
			}

			clearTimeout(timerID);
			document.getElementById('spin').style.display                = "none";
			document.getElementById('information').style.backgroundColor = "#fff";
			document.getElementById('information').style.color           = "#000";

			// use try/catch since some sections don't have the region filter
			try {
				document.getElementById('region').style.backgroundColor = "#fff";
				document.getElementById('filtered').disabled            = false;
			} catch(err) {}

			viewtitle = titlearray[view];
			if (viewtitle) {
				if (goal == 'home') document.title = pagetitle + " (" + viewtitle + ")";
				else                document.title = pagetitle.replace(/Data and Products/,"Data and Products (" + viewtitle + ")");
			}
			else document.title = pagetitle;
			i = 0;
			externalLinks();
		},

		onFailure: function() {
			clearTimeout(timerID);
			document.getElementById('spin').style.display = "none";
			alert('There was an error processing your request.');

			document.getElementById('information').style.background = "transparent";
			document.getElementById('information').style.color      = "#000";

			// use try/catch since some sections don't have the region filter
			try {
				document.getElementById('region').style.backgroundColor = "#fff";
				document.getElementById('filtered').disabled            = false;
			} catch(err) {}

			i = 0;
			externalLinks();
		}
	});
	return false;
}


function spin () {
	clearTimeout(timerID);

	numFrames = 12;
	delay     = 2; // in tenths of seconds

	if (i < numFrames+delay) i++;
	else i = delay+1;

	if (i > delay) {
		spinFrame = i-delay;
		document.getElementById('spin').style.display                = "block";
		document.getElementById('information').style.backgroundColor = "#ddd";
		document.getElementById('information').style.color           = "#777";

		// use try/catch since some sections don't have the region filter
		try {
			document.getElementById('region').style.backgroundColor      = "#ddd";
			document.getElementById('filtered').disabled                 = true;
		} catch(err) {}

		document.getElementById('spin-image').src                    = "/img/spin/spin-"+ spinFrame +".png";
	}

	timerID = setTimeout("spin()",100);
}