trunk/public_html/meteor.js

// Set domain at highest level
var domainparts = document.domain.split(".");
document.domain = domainparts[domainparts.length-2]+"."+domainparts[domainparts.length-1];

Function.prototype.bind = function(obj) {
        var method = this,
        temp = function() {
                return method.apply(obj, arguments);
        };
        return temp;
}
Function.prototype.andThen=function(g) {
        var f=this;
        var a=this.arguments
        return function(args) {
                f(a);g(args);
        }
};

function Meteor(instID) {

        this.transferDoc = false;
        this.pingtimer = false;
        this.updatepollfreqtimer = false;
        this.lastrequest = 0;
        this.recvtimes = [];
        this.MHostId = false;
        this.callback_process = function() {};
        this.callback_reset = function() {};
        this.callback_eof = function() {};
        this.callback_changemode = function() {};
        this.callback_statuschanged = function() {};
        this.persist = 1;
        this.frameloadtimer = false;
        this.debugmode = false;
        this.subsurl = false;
        this.channels = {};
        this.channelcount = 0;
        this.streamreq = false;
        this.byteoffset = 0;

        // Documented public properties
        this.subdomain = "data";
        this.dynamicpageaddress = "push";
        this.smartpoll = 1;
        this.pollfreq = 2000;
        this.minpollfreq = 2000;
        this.mode = "stream";
        this.polltimeout = 30000;
        this.pingtimeout = 10000;
        this.maxmessages = 0;
        this.status = 0;

        /* Statuses:    0 = Uninitialised,
                                        1 = Loading stream,
                                        2 = Loading controller frame,
                                        3 = Controller frame timeout, retrying.
                                        4 = Controller frame loaded and ready
                                        5 = Receiving data
        */

        this.instID = (typeof(instID) != "undefined") ? instID : 0;
        this.MHostId = Math.floor(Math.random()*100000000)+""+this.instID;
}

Meteor.instances = new Array();

Meteor.create = function(instID) {
        if (!instID) instID = Meteor.instances.length;
        Meteor.instances[instID] = new Meteor(instID);
        return Meteor.instances[instID];
}

Meteor.register = function(ifr) {
        instid = new String(ifr.window.frameElement.id);
        instid = instid.replace(/.*_([0-9]*)$/, "$1");
        ifr.p = this.instances[instid].process.bind(this.instances[instid]);
        ifr.r = this.instances[instid].reset.bind(this.instances[instid]);
        ifr.eof = this.instances[instid].eof.bind(this.instances[instid]);
        ifr.get = this.instances[instid].get.bind(this.instances[instid]);
        ifr.increasepolldelay = this.instances[instid].increasepolldelay.bind(this.instances[instid]);
        clearTimeout(this.instances[instid].frameloadtimer);
        this.instances[instid].setstatus(4);
        if (this.debugmode) console.log("Frame registered");
}

Meteor.reset = function(ifr) {
        instid = new String(ifr.window.frameElement.id);
        instid = instid.replace(/.*_([0-9]*)$/, "$1");
        this.instances[instid].reset();
}

Meteor.prototype.joinChannel = function(channelname, backtrack) {
        if (typeof(this.channels[channelname]) != "undefined") throw "Cannot join channel "+channelname+": already subscribed";
        this.channels[channelname] = {backtrack:backtrack, lastmsgreceived:0};
        if (this.debugmode) console.log("Joined channel "+channelname+", channel list follows");
        if (this.debugmode) console.log(this.channels);
        if (this.status != 0) this.start();
        this.channelcount++;
}

Meteor.prototype.leaveChannel = function(channelname) {
        if (typeof(this.channels[channelname]) == "undefined") throw "Cannot leave channel "+channelname+": not subscribed";
        delete this.channels[channelname];
        if (this.status != 0) this.start();
        this.channelcount--;
}

Meteor.prototype.start = function() {
        this.persist = (this.persist)?1:0;
        this.smartpoll = (this.smartpoll)?1:0;
        this.mode = (this.mode=="stream")?"stream":"poll";
        if (!this.subdomain || !this.channelcount) throw "Channel or Meteor subdomain host not specified";
        this.stop();
        var now = new Date();
        var t = now.getTime();
        this.setstatus(1);
        this.updateSubsUrl();
        if (this.mode=="stream") {
                if (document.all) {
                        this.createIframe(this.subsurl);
                } else {
                        this.createIframe("http://"+this.subdomain+"."+location.hostname+"/stream.html");
                }
                var f = this.pollmode.bind(this);
                clearTimeout(this.pingtimer);
                this.pingtimer = setTimeout(f, this.pingtimeout);

        } else {
                this.createIframe("http://"+this.subdomain+"."+location.hostname+"/poll.html?nc="+t);
                this.recvtimes[0] = t;
                if (this.updatepollfreqtimer) clearTimeout(this.updatepollfreqtimer);
                this.updatepollfreqtimer = setInterval(this.updatepollfreq.bind(this), 2500);
        }
        this.lastrequest = t;
}

Meteor.prototype.updateSubsUrl = function() {

        // If streaming or long polling, connection should persist
        this.persist = (this.mode == "stream" || (this.mode=='poll' && this.maxmessages > 0)) ? 1 : 0;
        var surl = "http://" + this.subdomain + "." + location.hostname + "/" + this.dynamicpageaddress + "?id=" + this.MHostId;
        if (this.persist && this.mode != "stream") surl += "&maxmessages=" + this.maxmessages;
        surl += "&persist="+this.persist;
        for (var c in this.channels) {
                surl += "&channel="+c;
                if (this.channels[c].lastmsgreceived > 0) {
                        surl += "&restartfrom="+(this.channels[c].lastmsgreceived+1);
                } else if (this.channels[c].backtrack > 0) {
                        surl += "&backtrack="+this.channels[c].backtrack;
                } else if (this.channels[c].backtrack < 0 || isNaN(this.channels[c].backtrack)) {
                        surl += "&restartfrom=";
                }
        }
        this.subsurl = surl;
}

Meteor.prototype.createIframe = function(url) {
        delete this.transferDoc;
        if (document.all) try { this.transferDoc = new ActiveXObject("htmlfile") } catch(ex) { this.transferDoc = null }
        if (document.all && this.transferDoc) {
                this.transferDoc = new ActiveXObject("htmlfile");
                this.transferDoc.open();
                this.transferDoc.write("<html>");
                this.transferDoc.write("<script>document.domain=\""+(document.domain)+"\";</"+"script>");
                this.transferDoc.write("</html>");
                this.transferDoc.parentWindow.Meteor = Meteor;
                this.transferDoc.close();
                var ifrDiv = this.transferDoc.createElement("div");
                this.transferDoc.appendChild(ifrDiv);
                ifrDiv.innerHTML = "<iframe id=\"meteorframe_"+this.instID+"\" src=\""+url+"\" style=\"display: none;\"></iframe>";
        } else {
                var ifr = document.createElement("IFRAME");
                ifr.style.width = "10px";
                ifr.style.height = "10px";
                ifr.style.border = "none";
                ifr.style.position = "absolute";
                ifr.style.top = "-10px";
                ifr.style.marginTop = "-10px";
                ifr.style.zIndex = "-20";
                ifr.setAttribute("id", "meteorframe_"+this.instID);
                ifr.Meteor = Meteor;
                if (document.compatMode=='CSS1Compat') {
                        var innerifr = document.createElement("IFRAME");
                        innerifr.setAttribute("src", url);
                        innerifr.setAttribute("id", "meteorinnerframe_"+this.instID);
                        ifr.appendChild(innerifr);
                        document.body.appendChild(ifr);
                } else {
                        ifr.setAttribute("src", url);
                        document.body.appendChild(ifr);
                }
        }
        if (this.debugmode) console.log("Loading URL '"+url+"' into frame...");
        var f = this.frameloadtimeout.bind(this);
        this.frameloadtimer = setTimeout(f, 5000);
}

Meteor.prototype.stop = function() {
        if (typeof(this.transferDoc)=="object") {
                this.transferDoc = false;
        }
        if (document.getElementById("meteorframe_"+this.instID)) {
                document.getElementById("meteorframe_"+this.instID).src="about:blank";
                document.body.removeChild(document.getElementById("meteorframe_"+this.instID));
        }
        clearTimeout(this.pingtimer);
        clearTimeout(this.updatepollfreqtimer);
        clearTimeout(this.frameloadtimer);
        this.setstatus(0);
}

Meteor.prototype.pollmode = function() {
        if (this.debugmode) console.log("Ping timeout");
        this.mode="poll";
        this.start();
        this.callback_changemode("poll");
        this.lastpingtime = false;
}

Meteor.prototype.process = function(id, channel, data) {
        if (id == -1) {
                if (this.debugmode) console.log("Ping");
                this.ping();
        } else if (typeof(this.channels[channel]) != "undefined" && id > this.channels[channel].lastmsgreceived) {
                if (this.debugmode) console.log("Message "+id+" received on channel "+channel+" (last id on channel: "+this.channels[channel].lastmsgreceived+")\n"+data);
                this.callback_process(data);
                this.channels[channel].lastmsgreceived = id;
                if (this.mode=="poll") {
                        var now = new Date();
                        var t = now.getTime();
                        this.recvtimes[this.recvtimes.length] = t;
                        while (this.recvtimes.length > 5) this.recvtimes.shift();
                }
        }
        this.updateSubsUrl();
        this.setstatus(5);
}

Meteor.prototype.ping = function() {
        if (this.mode=="stream" && this.pingtimer) {
                clearTimeout(this.pingtimer);
                var f = this.pollmode.bind(this);
                this.pingtimer = setTimeout(f, this.pingtimeout);
                var now = new Date();
                this.lastpingtime = now.getTime();
        }
        this.setstatus(5);
}

Meteor.prototype.reset = function() {
        if (this.debugmode) console.log("Stream reset");
        var now = new Date();
        var t = now.getTime();
        var x = this.pollfreq - (t-this.lastrequest);
        if (x < 10) x = 10;
        this.ping();
        this.callback_reset();
        setTimeout(this.start.bind(this), x);
}

Meteor.prototype.eof = function() {
        this.callback_eof();
}

Meteor.prototype.get = function(varname) {
        eval("var a = this."+varname+";");
        if (typeof(a) == "undefined") throw "Cannot get value of "+varname;
        return a;
}

Meteor.prototype.increasepolldelay = function() {
        this.pollfreq *= 2;
}

Meteor.prototype.updatepollfreq = function() {
        if (this.smartpoll) {
                var now = new Date();
                var t = now.getTime();
                var avg = 0;
                for (var i=1; i<this.recvtimes.length; i++) {
                        var x = (this.recvtimes[i]-this.recvtimes[i-1]);
                        avg += (x>60000)? 60000 : x;
                }
                x = (t-this.recvtimes[this.recvtimes.length-1]);
                avg += (x>180000)? 180000 : x;
                avg /= this.recvtimes.length;
                if ((avg/3) < this.pollfreq && (avg/3) >= this.minpollfreq) this.pollfreq = Math.ceil(this.pollfreq*0.9);
                if ((avg/3) > this.pollfreq) this.pollfreq = Math.floor(this.pollfreq*1.05);
        }
}

Meteor.prototype.registerEventCallback = function(evt, funcRef) {
        if (evt=="process") {
                this.callback_process = (this.callback_process).andThen(funcRef);
        } else if (evt=="reset") {
                this.callback_reset = (this.callback_reset).andThen(funcRef);
        } else if (evt=="eof") {
                this.callback_eof = (this.callback_eof).andThen(funcRef);
        } else if (evt=="changemode") {
                this.callback_changemode = (this.callback_changemode).andThen(funcRef);
        } else if (evt=="changestatus") {
                this.callback_statuschanged = (this.callback_statuschanged).andThen(funcRef);
        }
}

Meteor.prototype.frameloadtimeout = function() {
        if (this.debugmode) console.log("Frame load timeout");
        if (this.frameloadtimer) clearTimeout(this.frameloadtimer);
        this.setstatus(3);
        setTimeout(this.start.bind(this), 5000);
}
Meteor.prototype.setstatus = function(newstatus) {
        if (this.status != newstatus) {
                this.status = newstatus;
                this.callback_statuschanged(newstatus);
        }
}


Meteor.createCookie = function(name,value,days) {
        if (days) {
                var date = new Date();
                date.setTime(date.getTime()+(days*24*60*60*1000));
                var expires = "; expires="+date.toGMTString();
        }
        else var expires = "";
        document.cookie = name+"="+value+expires+"; path=/";
}

Meteor.readCookie = function(name) {
        var nameEQ = name + "=";
        var ca = document.cookie.split(';');
        for(var i=0;i < ca.length;i++) {
                var c = ca[i];
                while (c.charAt(0)==' ') c = c.substring(1,c.length);
                if (c.indexOf(nameEQ) == 0) return c.substring(nameEQ.length,c.length);
        }
        return null;
}

Meteor.eraseCookie = function(name) {
        createCookie(name,"",-1);
}
1	// Set domain at highest level
2	var domainparts = document.domain.split(".");
3	document.domain = domainparts[domainparts.length-2]+"."+domainparts[domainparts.length-1];
4
5	Function.prototype.bind = function(obj) {
6	var method = this,
7	temp = function() {
8	return method.apply(obj, arguments);
9	};
10	return temp;
11	}
12	Function.prototype.andThen=function(g) {
13	var f=this;
14	var a=this.arguments
15	return function(args) {
16	f(a);g(args);
17	}
18	};
19
20	function Meteor(instID) {
21
22	this.transferDoc = false;
23	this.pingtimer = false;
24	this.updatepollfreqtimer = false;
25	this.lastrequest = 0;
26	this.recvtimes = [];
27	this.MHostId = false;
28	this.callback_process = function() {};
29	this.callback_reset = function() {};
30	this.callback_eof = function() {};
31	this.callback_changemode = function() {};
32	this.callback_statuschanged = function() {};
33	this.persist = 1;
34	this.frameloadtimer = false;
35	this.debugmode = false;
36	this.subsurl = false;
37	this.channels = {};
38	this.channelcount = 0;
39	this.streamreq = false;
40	this.byteoffset = 0;
41
42	// Documented public properties
43	this.subdomain = "data";
44	this.dynamicpageaddress = "push";
45	this.smartpoll = 1;
46	this.pollfreq = 2000;
47	this.minpollfreq = 2000;
48	this.mode = "stream";
49	this.polltimeout = 30000;
50	this.pingtimeout = 10000;
51	this.maxmessages = 0;
52	this.status = 0;
53
54	/* Statuses: 0 = Uninitialised,
55	1 = Loading stream,
56	2 = Loading controller frame,
57	3 = Controller frame timeout, retrying.
58	4 = Controller frame loaded and ready
59	5 = Receiving data
60	*/
61
62	this.instID = (typeof(instID) != "undefined") ? instID : 0;
63	this.MHostId = Math.floor(Math.random()*100000000)+""+this.instID;
64	}
65
66	Meteor.instances = new Array();
67
68	Meteor.create = function(instID) {
69	if (!instID) instID = Meteor.instances.length;
70	Meteor.instances[instID] = new Meteor(instID);
71	return Meteor.instances[instID];
72	}
73
74	Meteor.register = function(ifr) {
75	instid = new String(ifr.window.frameElement.id);
76	instid = instid.replace(/._([0-9])$/, "$1");
77	ifr.p = this.instances[instid].process.bind(this.instances[instid]);
78	ifr.r = this.instances[instid].reset.bind(this.instances[instid]);
79	ifr.eof = this.instances[instid].eof.bind(this.instances[instid]);
80	ifr.get = this.instances[instid].get.bind(this.instances[instid]);
81	ifr.increasepolldelay = this.instances[instid].increasepolldelay.bind(this.instances[instid]);
82	clearTimeout(this.instances[instid].frameloadtimer);
83	this.instances[instid].setstatus(4);
84	if (this.debugmode) console.log("Frame registered");
85	}
86
87	Meteor.reset = function(ifr) {
88	instid = new String(ifr.window.frameElement.id);
89	instid = instid.replace(/._([0-9])$/, "$1");
90	this.instances[instid].reset();
91	}
92
93	Meteor.prototype.joinChannel = function(channelname, backtrack) {
94	if (typeof(this.channels[channelname]) != "undefined") throw "Cannot join channel "+channelname+": already subscribed";
95	this.channels[channelname] = {backtrack:backtrack, lastmsgreceived:0};
96	if (this.debugmode) console.log("Joined channel "+channelname+", channel list follows");
97	if (this.debugmode) console.log(this.channels);
98	if (this.status != 0) this.start();
99	this.channelcount++;
100	}
101
102	Meteor.prototype.leaveChannel = function(channelname) {
103	if (typeof(this.channels[channelname]) == "undefined") throw "Cannot leave channel "+channelname+": not subscribed";
104	delete this.channels[channelname];
105	if (this.status != 0) this.start();
106	this.channelcount--;
107	}
108
109	Meteor.prototype.start = function() {
110	this.persist = (this.persist)?1:0;
111	this.smartpoll = (this.smartpoll)?1:0;
112	this.mode = (this.mode=="stream")?"stream":"poll";
113	if (!this.subdomain \|\| !this.channelcount) throw "Channel or Meteor subdomain host not specified";
114	this.stop();
115	var now = new Date();
116	var t = now.getTime();
117	this.setstatus(1);
118	this.updateSubsUrl();
119	if (this.mode=="stream") {
120	if (document.all) {
121	this.createIframe(this.subsurl);
122	} else {
123	this.createIframe("http://"+this.subdomain+"."+location.hostname+"/stream.html");
124	}
125	var f = this.pollmode.bind(this);
126	clearTimeout(this.pingtimer);
127	this.pingtimer = setTimeout(f, this.pingtimeout);
128
129	} else {
130	this.createIframe("http://"+this.subdomain+"."+location.hostname+"/poll.html?nc="+t);
131	this.recvtimes[0] = t;
132	if (this.updatepollfreqtimer) clearTimeout(this.updatepollfreqtimer);
133	this.updatepollfreqtimer = setInterval(this.updatepollfreq.bind(this), 2500);
134	}
135	this.lastrequest = t;
136	}
137
138	Meteor.prototype.updateSubsUrl = function() {
139
140	// If streaming or long polling, connection should persist
141	this.persist = (this.mode == "stream" \|\| (this.mode=='poll' && this.maxmessages > 0)) ? 1 : 0;
142	var surl = "http://" + this.subdomain + "." + location.hostname + "/" + this.dynamicpageaddress + "?id=" + this.MHostId;
143	if (this.persist && this.mode != "stream") surl += "&maxmessages=" + this.maxmessages;
144	surl += "&persist="+this.persist;
145	for (var c in this.channels) {
146	surl += "&channel="+c;
147	if (this.channels[c].lastmsgreceived > 0) {
148	surl += "&restartfrom="+(this.channels[c].lastmsgreceived+1);
149	} else if (this.channels[c].backtrack > 0) {
150	surl += "&backtrack="+this.channels[c].backtrack;
151	} else if (this.channels[c].backtrack < 0 \|\| isNaN(this.channels[c].backtrack)) {
152	surl += "&restartfrom=";
153	}
154	}
155	this.subsurl = surl;
156	}
157
158	Meteor.prototype.createIframe = function(url) {
159	delete this.transferDoc;
160	if (document.all) try { this.transferDoc = new ActiveXObject("htmlfile") } catch(ex) { this.transferDoc = null }
161	if (document.all && this.transferDoc) {
162	this.transferDoc = new ActiveXObject("htmlfile");
163	this.transferDoc.open();
164	this.transferDoc.write("<html>");
165	this.transferDoc.write("<script>document.domain=\""+(document.domain)+"\";</"+"script>");
166	this.transferDoc.write("</html>");
167	this.transferDoc.parentWindow.Meteor = Meteor;
168	this.transferDoc.close();
169	var ifrDiv = this.transferDoc.createElement("div");
170	this.transferDoc.appendChild(ifrDiv);
171	ifrDiv.innerHTML = "<iframe id=\"meteorframe_"+this.instID+"\" src=\""+url+"\" style=\"display: none;\"></iframe>";
172	} else {
173	var ifr = document.createElement("IFRAME");
174	ifr.style.width = "10px";
175	ifr.style.height = "10px";
176	ifr.style.border = "none";
177	ifr.style.position = "absolute";
178	ifr.style.top = "-10px";
179	ifr.style.marginTop = "-10px";
180	ifr.style.zIndex = "-20";
181	ifr.setAttribute("id", "meteorframe_"+this.instID);
182	ifr.Meteor = Meteor;
183	if (document.compatMode=='CSS1Compat') {
184	var innerifr = document.createElement("IFRAME");
185	innerifr.setAttribute("src", url);
186	innerifr.setAttribute("id", "meteorinnerframe_"+this.instID);
187	ifr.appendChild(innerifr);
188	document.body.appendChild(ifr);
189	} else {
190	ifr.setAttribute("src", url);
191	document.body.appendChild(ifr);
192	}
193	}
194	if (this.debugmode) console.log("Loading URL '"+url+"' into frame...");
195	var f = this.frameloadtimeout.bind(this);
196	this.frameloadtimer = setTimeout(f, 5000);
197	}
198
199	Meteor.prototype.stop = function() {
200	if (typeof(this.transferDoc)=="object") {
201	this.transferDoc = false;
202	}
203	if (document.getElementById("meteorframe_"+this.instID)) {
204	document.getElementById("meteorframe_"+this.instID).src="about:blank";
205	document.body.removeChild(document.getElementById("meteorframe_"+this.instID));
206	}
207	clearTimeout(this.pingtimer);
208	clearTimeout(this.updatepollfreqtimer);
209	clearTimeout(this.frameloadtimer);
210	this.setstatus(0);
211	}
212
213	Meteor.prototype.pollmode = function() {
214	if (this.debugmode) console.log("Ping timeout");
215	this.mode="poll";
216	this.start();
217	this.callback_changemode("poll");
218	this.lastpingtime = false;
219	}
220
221	Meteor.prototype.process = function(id, channel, data) {
222	if (id == -1) {
223	if (this.debugmode) console.log("Ping");
224	this.ping();
225	} else if (typeof(this.channels[channel]) != "undefined" && id > this.channels[channel].lastmsgreceived) {
226	if (this.debugmode) console.log("Message "+id+" received on channel "+channel+" (last id on channel: "+this.channels[channel].lastmsgreceived+")\n"+data);
227	this.callback_process(data);
228	this.channels[channel].lastmsgreceived = id;
229	if (this.mode=="poll") {
230	var now = new Date();
231	var t = now.getTime();
232	this.recvtimes[this.recvtimes.length] = t;
233	while (this.recvtimes.length > 5) this.recvtimes.shift();
234	}
235	}
236	this.updateSubsUrl();
237	this.setstatus(5);
238	}
239
240	Meteor.prototype.ping = function() {
241	if (this.mode=="stream" && this.pingtimer) {
242	clearTimeout(this.pingtimer);
243	var f = this.pollmode.bind(this);
244	this.pingtimer = setTimeout(f, this.pingtimeout);
245	var now = new Date();
246	this.lastpingtime = now.getTime();
247	}
248	this.setstatus(5);
249	}
250
251	Meteor.prototype.reset = function() {
252	if (this.debugmode) console.log("Stream reset");
253	var now = new Date();
254	var t = now.getTime();
255	var x = this.pollfreq - (t-this.lastrequest);
256	if (x < 10) x = 10;
257	this.ping();
258	this.callback_reset();
259	setTimeout(this.start.bind(this), x);
260	}
261
262	Meteor.prototype.eof = function() {
263	this.callback_eof();
264	}
265
266	Meteor.prototype.get = function(varname) {
267	eval("var a = this."+varname+";");
268	if (typeof(a) == "undefined") throw "Cannot get value of "+varname;
269	return a;
270	}
271
272	Meteor.prototype.increasepolldelay = function() {
273	this.pollfreq *= 2;
274	}
275
276	Meteor.prototype.updatepollfreq = function() {
277	if (this.smartpoll) {
278	var now = new Date();
279	var t = now.getTime();
280	var avg = 0;
281	for (var i=1; i<this.recvtimes.length; i++) {
282	var x = (this.recvtimes[i]-this.recvtimes[i-1]);
283	avg += (x>60000)? 60000 : x;
284	}
285	x = (t-this.recvtimes[this.recvtimes.length-1]);
286	avg += (x>180000)? 180000 : x;
287	avg /= this.recvtimes.length;
288	if ((avg/3) < this.pollfreq && (avg/3) >= this.minpollfreq) this.pollfreq = Math.ceil(this.pollfreq*0.9);
289	if ((avg/3) > this.pollfreq) this.pollfreq = Math.floor(this.pollfreq*1.05);
290	}
291	}
292
293	Meteor.prototype.registerEventCallback = function(evt, funcRef) {
294	if (evt=="process") {
295	this.callback_process = (this.callback_process).andThen(funcRef);
296	} else if (evt=="reset") {
297	this.callback_reset = (this.callback_reset).andThen(funcRef);
298	} else if (evt=="eof") {
299	this.callback_eof = (this.callback_eof).andThen(funcRef);
300	} else if (evt=="changemode") {
301	this.callback_changemode = (this.callback_changemode).andThen(funcRef);
302	} else if (evt=="changestatus") {
303	this.callback_statuschanged = (this.callback_statuschanged).andThen(funcRef);
304	}
305	}
306
307	Meteor.prototype.frameloadtimeout = function() {
308	if (this.debugmode) console.log("Frame load timeout");
309	if (this.frameloadtimer) clearTimeout(this.frameloadtimer);
310	this.setstatus(3);
311	setTimeout(this.start.bind(this), 5000);
312	}
313	Meteor.prototype.setstatus = function(newstatus) {
314	if (this.status != newstatus) {
315	this.status = newstatus;
316	this.callback_statuschanged(newstatus);
317	}
318	}
319
320
321	Meteor.createCookie = function(name,value,days) {
322	if (days) {
323	var date = new Date();
324	date.setTime(date.getTime()+(days2460601000));
325	var expires = "; expires="+date.toGMTString();
326	}
327	else var expires = "";
328	document.cookie = name+"="+value+expires+"; path=/";
329	}
330
331	Meteor.readCookie = function(name) {
332	var nameEQ = name + "=";
333	var ca = document.cookie.split(';');
334	for(var i=0;i < ca.length;i++) {
335	var c = ca[i];
336	while (c.charAt(0)==' ') c = c.substring(1,c.length);
337	if (c.indexOf(nameEQ) == 0) return c.substring(nameEQ.length,c.length);
338	}
339	return null;
340	}
341
342	Meteor.eraseCookie = function(name) {
343	createCookie(name,"",-1);
344	}