// encode a URL with standard compliance
function urlencode (str) {
	str = (str+'').toString();
	return encodeURIComponent(str).replace(/!/g, '%21').replace(/'/g, '%27').replace(/\(/g, '%28').
		replace(/\)/g, '%29').replace(/\*/g, '%2A').replace(/%20/g, '+');
}

// emulate PHP http_build_query
function http_build_query (formdata, numeric_prefix, arg_separator) {
    var value, key, tmp = [];
 
    var _http_build_query_helper = function (key, val, arg_separator) {
        var k, tmp = [];
        if (val === true) {
            val = "1";
        } else if (val === false) {
            val = "0";
        }
        if (val !== null && typeof(val) === "object") {
            for (k in val) {
                if (val[k] !== null) {
                    tmp.push(_http_build_query_helper(key + "[" + k + "]", val[k], arg_separator));
                }
            }
            return tmp.join(arg_separator);
        } else if (typeof(val) !== "function") {
            return this.urlencode(key) + "=" + this.urlencode(val);
        } else {
            throw new Error('There was an error processing for http_build_query().');
        }
    };
 
    if (!arg_separator) {
        arg_separator = "&";
    }
    for (key in formdata) {
        value = formdata[key];
        if (numeric_prefix && !isNaN(key)) {
            key = String(numeric_prefix) + key;
        }
        tmp.push(_http_build_query_helper(key, value, arg_separator));
    }
 
    return tmp.join(arg_separator);
}

// browser detect variable
var BrowserDetect = {
	init: function () {
		this.browser = this.searchString(this.dataBrowser) || "An unknown browser";
		this.version = this.searchVersion(navigator.userAgent)
			|| this.searchVersion(navigator.appVersion)
			|| "an unknown version";
		this.OS = this.searchString(this.dataOS) || "an unknown OS";
	},
	searchString: function (data) {
		for (var i=0;i<data.length;i++)	{
			var dataString = data[i].string;
			var dataProp = data[i].prop;
			this.versionSearchString = data[i].versionSearch || data[i].identity;
			if (dataString) {
				if (dataString.indexOf(data[i].subString) != -1)
					return data[i].identity;
			}
			else if (dataProp)
				return data[i].identity;
		}
	},
	searchVersion: function (dataString) {
		var index = dataString.indexOf(this.versionSearchString);
		if (index == -1) return;
		return parseFloat(dataString.substring(index+this.versionSearchString.length+1));
	},
	dataBrowser: [
		{
			string: navigator.userAgent,
			subString: "Chrome",
			identity: "Chrome"
		},
		{ 	string: navigator.userAgent,
			subString: "OmniWeb",
			versionSearch: "OmniWeb/",
			identity: "OmniWeb"
		},
		{
			string: navigator.vendor,
			subString: "Apple",
			identity: "Safari",
			versionSearch: "Version"
		},
		{
			prop: window.opera,
			identity: "Opera"
		},
		{
			string: navigator.vendor,
			subString: "iCab",
			identity: "iCab"
		},
		{
			string: navigator.vendor,
			subString: "KDE",
			identity: "Konqueror"
		},
		{
			string: navigator.userAgent,
			subString: "Firefox",
			identity: "Firefox"
		},
		{
			string: navigator.vendor,
			subString: "Camino",
			identity: "Camino"
		},
		{		// for newer Netscapes (6+)
			string: navigator.userAgent,
			subString: "Netscape",
			identity: "Netscape"
		},
		{
			string: navigator.userAgent,
			subString: "MSIE",
			identity: "Explorer",
			versionSearch: "MSIE"
		},
		{
			string: navigator.userAgent,
			subString: "Gecko",
			identity: "Mozilla",
			versionSearch: "rv"
		},
		{ 		// for older Netscapes (4-)
			string: navigator.userAgent,
			subString: "Mozilla",
			identity: "Netscape",
			versionSearch: "Mozilla"
		}
	],
	dataOS : [
		{
			string: navigator.platform,
			subString: "Win",
			identity: "Windows"
		},
		{
			string: navigator.platform,
			subString: "Mac",
			identity: "Mac"
		},
		{
			   string: navigator.userAgent,
			   subString: "iPhone",
			   identity: "iPhone/iPod"
	    },
		{
			string: navigator.platform,
			subString: "Linux",
			identity: "Linux"
		}
	]

};
BrowserDetect.init();

// ping program
var nOfPings = 10;
var pingTimes = Array();
var pingPointer = 0;
var myPing = function() {
	var opt = {
		evalScripts: false,
		url: './ping.php',
		method: 'get',
		noCache: true,
		onSuccess: function(responseTree, responseElements, responseHTML, responseJavaScript) {
			if (pingPointer < nOfPings) {
				var body = $$('body');
				var d = new Date();
				var json = new Hash(JSON.decode(responseHTML, true) || {});
				pingTimes[pingPointer++] = d.getTime() - body[0].retrieve('time') - json.get('exectime');
			}
		}
	};
	if (pingPointer >= nOfPings) {
		var pingQuery = "";
		for (var i = 0; i < nOfPings; i++) {
			pingQuery += "&ping" + i.toString() + "=" + pingTimes[i].toString();
		}
		opt.data = pingQuery;
		$clear(myPingId);
		var myRequest = new Request.HTML(opt);
		myRequest.send();
	} else {
		var body = $$('body');
		var d = new Date();
		body[0].store('time', d.getTime());
		var myRequest = new Request.HTML(opt);
		myRequest.send();
	}

};
//var myPingId = myPing.periodical(500);