var app = {
	_submitURL: 'http://p4w.net84.net/chromeapp/rtrees/submit.php',
	_getURL: 'http://p4w.net84.net/chromeapp/rtrees/get.php',
	submit: function(value, callback) {
		
		var req = new XMLHttpRequest();
		req.open("GET", this._submitURL + "?high="+value, true);
		req.onload = callback;
		req.send(null);
		
	},
	get: function() {
	
		var req = new XMLHttpRequest();
		req.onload = function() {
			
			var html = req.responseText;
			var obj = null;
			
			try {
				obj = JSON.parse(html);
			}
			catch (err) {
				//alert("Unable to read resonse from server. (Expected JSON)\r\nResponse: " + html);
				return;
			}
			
			if(domExists('usercount'))
				$("#usercount").html(obj.count);
				
			if(domExists('average'))
				$("#average").html('['+Math.floor(obj.average)+']');
			
			chrome.browserAction.setBadgeText({text: '['+Math.floor(obj.average)+']'});
				
		}
		req.open("GET", this._getURL, true);
		req.send(null);
	}
}
var loader = {
	disable: function() {
		$("#loader").hide();
	},
	enable: function() {
		$("#loader").show();
	}
}

function domExists(id) {
	try {
		document.getElementById(id).parentNode;
		return true;
	}
	catch (err) {
		return false;
	}
}