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 addUnLoadEvent(func) {
  var oldonunload = window.onunload;
  if (typeof window.onunload != 'function') {
    window.onunload = func;
  } else {
    window.onunload = function() {
      if (oldonunload) {
        oldonunload();
      }
      func();
    }
  }
}
addUnLoadEvent(meteordestroy);
function meteordestroy() {
        var x = Meteor.instances.length;
        for(var i=0; i<x; i++) {
                if (typeof(Meteor.instances[i].transferDoc)=="object") {
                        Meteor.instances[i].transferDoc.open();
                        Meteor.instances[i].transferDoc.close();
                        delete Meteor.instances[i].transferDoc;
                }
                if (document.getElementById("meteorframe_"+Meteor.instances[i].instID)) {
                        document.body.removeChild(document.getElementById("meteorframe_"+Meteor.instances[i].instID));
                }
                delete Meteor.instances[i];
        }
}

function Meteor(instID) {

        this.lastmsgreceived = -1;
        this.transferDoc = false;
        this.pingtimer = false;
        this.updatepollfreqtimer = false;
        this.lastrequest = 0;
        this.recvtimes = new Array();
        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 = true;
        this.frameloadtimer = false;
        this.frameurl = false;

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

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

        // Set or retrieve host id.  Cookie takes this form:
        // MeteorID=123:6356353/124:098320454;
        var MeteIds = Meteor.readCookie("MeteorID");
        var regex1 = new RegExp("^([0-9\:\/M]+\/)*"+instID+"\:([^\/]+)(\/[0-9\:\/M]+)*$");
        var regex2 = new RegExp("^([0-9\:\/M]+\/)*M\:([^\/]+)(\/[0-9\:\/M]+)*$");
        if (typeof(instID) == "Number" && regex1.exec(MeteIds)) {
                this.MHostId = ma[2];
        } else if (typeof(instID) == "Number") {
                this.MHostId = Math.floor(Math.random()*1000000);
                var newcookie = (MeteIds)?MeteIds+"/":"";
                newcookie += instID+":"+this.MHostId;
                Meteor.createCookie("MeteorID", newcookie);
        } else if (ma = regex2.exec(MeteIds)) {
                this.MHostId = ma[2];
        } else {
                this.MHostId = Math.floor(Math.random()*1000000);
                var newcookie = (MeteIds)?MeteIds+"/":"";
                newcookie += "M:"+this.MHostId;
                Meteor.createCookie("MeteorID", newcookie);
        }
        this.instID = (typeof(instID) != "undefined") ? instID : 0;
}

Meteor.instances = new Array();
Meteor.servertimeoffset = 0;

Meteor.create = function(instID) {
        if (!instID) instID = 0;
        Meteor.instances[instID] = new Meteor(instID);
        return Meteor.instances[instID];
}

Meteor.register = function(ifr) {
        instid = new String(ifr.window.frameElement.id);
        instid = instid.replace("meteorframe_", "");
        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);
}

Meteor.setServerTime = function(timestamp) {
        var now = new Date();
        var clienttime = (now.getTime() / 1000);
        Meteor.servertimeoffset = timestamp - clienttime;
}

Meteor.prototype.start = function() {
        this.persist = (this.maxmessages)?1:0;
        this.smartpoll = (this.smartpoll)?1:0;
        this.mode = (this.mode=="stream")?"stream":"poll";
        if (!this.subdomain || !this.channel) throw "Channel or Meteor subdomain host not specified";
        var now = new Date();
        var t = now.getTime();
        if (typeof(this.transferDoc)=="object") {
                this.transferDoc.open();
                this.transferDoc.close();
                delete this.transferDoc;
        }
        if (document.getElementById("meteorframe_"+this.instID)) {
                document.body.removeChild(document.getElementById("meteorframe_"+this.instID));
        }
        if (this.mode=="stream") {
                if (document.all) {
                        this.setstatus(1);
                        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>");
                        var selfref = this;
                        this.transferDoc.parentWindow.Meteor = Meteor;
                        this.transferDoc.close();
                        var ifrDiv = this.transferDoc.createElement("div");
                        this.transferDoc.appendChild(ifrDiv);
                        var url = "http://"+this.subdomain+"."+location.hostname+"/"+this.dynamicpageaddress+"?channel="+this.channel+"&id="+this.MHostId;
                        if (this.lastmsgreceived >= 0) {
                                url += "&restartfrom="+this.lastmsgreceived;
                        } else if (this.backtrack > 0) {
                                url += "&backtrack="+this.backtrack;
                        } else if (this.backtrack < 0 || isNaN(this.backtrack)) {
                                url += "&restartfrom=";
                        }
                        ifrDiv.innerHTML = "<iframe id=\"meteorframe_"+this.instID+"\" src=\""+url+"&nocache="+t+"\" 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.id = "meteorframe_"+this.instID;
                        document.body.appendChild(ifr);
                        this.frameurl = "http://"+this.subdomain+"."+location.hostname+"/stream.html";
                        this.frameload();
                }
                var f = this.pollmode.bind(this);
                clearTimeout(this.pingtimer);
                this.pingtimer = setTimeout(f, this.pingtimeout);

        } else {
                var ifr = document.createElement("IFRAME");
                ifr.style.width = "10px";
                ifr.style.height = "10px";
                ifr.style.border = "none";
                if (document.all) {
                        ifr.style.display = "none";
                } else {
                        ifr.style.position = "absolute";
                        ifr.style.marginTop = "-10px";
                        ifr.style.zIndex = "-20";
                }
                ifr.id = "meteorframe_"+this.instID;
                document.body.appendChild(ifr);
                this.frameurl = "http://"+this.subdomain+"."+location.hostname+"/poll.html";
                this.frameload();
                this.recvtimes[0] = t;
                if (this.updatepollfreqtimer) clearTimeout(this.updatepollfreqtimer);
                this.updatepollfreqtimer = setInterval(this.updatepollfreq.bind(this), 2500);
        }
        this.lastrequest = t;
}

Meteor.prototype.pollmode = function() {
        this.mode="poll";
        this.start();
        this.callback_changemode("poll");
        this.lastpingtime = false;
}

Meteor.prototype.process = function(id, data) {
        if (id > this.lastmsgreceived) {
                this.callback_process(data);
                if (id != -1) this.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();
                }
        } else if (id == -1) {
                this.ping();
        }
        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() {
        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.frameload = function() {
        this.setstatus(2);
        if (document.getElementById("meteorframe_"+this.instID)) {
                var f = this.frameloadtimeout.bind(this);
                this.frameloadtimer = setTimeout(f, 5000);
                document.getElementById("meteorframe_"+this.instID).src = "about:blank";
                setTimeout(this.doloadurl.bind(this), 100);
        }
}
Meteor.prototype.doloadurl = function() {
        var now = new Date();
        var t = now.getTime();
        document.getElementById("meteorframe_"+this.instID).src = this.frameurl+"?nocache="+t;
}
Meteor.prototype.frameloadtimeout = function() {
        if (this.frameloadtimer) clearTimeout(this.frameloadtimer);
        this.setstatus(3);
        this.frameload();
}
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	andrew.betts	6	// 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	andrew.betts	8	function addUnLoadEvent(func) {
20			var oldonunload = window.onunload;
21			if (typeof window.onunload != 'function') {
22			window.onunload = func;
23			} else {
24			window.onunload = function() {
25			if (oldonunload) {
26			oldonunload();
27			}
28			func();
29			}
30			}
31			}
32			addUnLoadEvent(meteordestroy);
33			function meteordestroy() {
34			var x = Meteor.instances.length;
35			for(var i=0; i<x; i++) {
36			if (typeof(Meteor.instances[i].transferDoc)=="object") {
37			Meteor.instances[i].transferDoc.open();
38			Meteor.instances[i].transferDoc.close();
39			delete Meteor.instances[i].transferDoc;
40			}
41			if (document.getElementById("meteorframe_"+Meteor.instances[i].instID)) {
42			document.body.removeChild(document.getElementById("meteorframe_"+Meteor.instances[i].instID));
43			}
44			delete Meteor.instances[i];
45			}
46			}
47	andrew.betts	6
48			function Meteor(instID) {
49
50			this.lastmsgreceived = -1;
51			this.transferDoc = false;
52			this.pingtimer = false;
53			this.updatepollfreqtimer = false;
54			this.lastrequest = 0;
55			this.recvtimes = new Array();
56			this.MHostId = false;
57			this.callback_process = function() {};
58			this.callback_reset = function() {};
59			this.callback_eof = function() {};
60			this.callback_changemode = function() {};
61	andrew.betts	7	this.callback_statuschanged = function() {};
62	andrew.betts	6	this.persist = true;
63	andrew.betts	7	this.frameloadtimer = false;
64			this.frameurl = false;
65	andrew.betts	6
66			// Documented public properties
67			this.channel = false;
68			this.subdomain = "data";
69			this.dynamicpageaddress = "push";
70			this.backtrack = 0;
71			this.smartpoll = true;
72			this.pollfreq = 2000;
73			this.minpollfreq = 2000;
74			this.mode = "stream";
75			this.polltimeout=30000;
76			this.maxmessages=0;
77			this.pingtimeout = 10000;
78	andrew.betts	7	this.status = 0;
79	andrew.betts	6
80	andrew.betts	7	/* Statuses: 0 = Uninitialised,
81			1 = Loading stream,
82			2 = Loading controller frame,
83			3 = Controller frame timeout, retrying every 5 seconds
84			4 = Controller frame loaded and ready
85			5 = Receiving data
86			*/
87
88	andrew.betts	6	// Set or retrieve host id. Cookie takes this form:
89			// MeteorID=123:6356353/124:098320454;
90			var MeteIds = Meteor.readCookie("MeteorID");
91			var regex1 = new RegExp("^([0-9\:\/M]+\/)"+instID+"\:([^\/]+)(\/[0-9\:\/M]+)$");
92			var regex2 = new RegExp("^([0-9\:\/M]+\/)M\:([^\/]+)(\/[0-9\:\/M]+)$");
93			if (typeof(instID) == "Number" && regex1.exec(MeteIds)) {
94			this.MHostId = ma[2];
95			} else if (typeof(instID) == "Number") {
96			this.MHostId = Math.floor(Math.random()*1000000);
97			var newcookie = (MeteIds)?MeteIds+"/":"";
98			newcookie += instID+":"+this.MHostId;
99			Meteor.createCookie("MeteorID", newcookie);
100			} else if (ma = regex2.exec(MeteIds)) {
101			this.MHostId = ma[2];
102			} else {
103			this.MHostId = Math.floor(Math.random()*1000000);
104			var newcookie = (MeteIds)?MeteIds+"/":"";
105			newcookie += "M:"+this.MHostId;
106			Meteor.createCookie("MeteorID", newcookie);
107			}
108			this.instID = (typeof(instID) != "undefined") ? instID : 0;
109			}
110
111			Meteor.instances = new Array();
112			Meteor.servertimeoffset = 0;
113
114			Meteor.create = function(instID) {
115			if (!instID) instID = 0;
116			Meteor.instances[instID] = new Meteor(instID);
117			return Meteor.instances[instID];
118			}
119
120			Meteor.register = function(ifr) {
121			instid = new String(ifr.window.frameElement.id);
122			instid = instid.replace("meteorframe_", "");
123			ifr.p = this.instances[instid].process.bind(this.instances[instid]);
124			ifr.r = this.instances[instid].reset.bind(this.instances[instid]);
125			ifr.eof = this.instances[instid].eof.bind(this.instances[instid]);
126			ifr.get = this.instances[instid].get.bind(this.instances[instid]);
127			ifr.increasepolldelay = this.instances[instid].increasepolldelay.bind(this.instances[instid]);
128	andrew.betts	7	clearTimeout(this.instances[instid].frameloadtimer);
129			this.instances[instid].setstatus(4);
130	andrew.betts	6	}
131
132			Meteor.setServerTime = function(timestamp) {
133			var now = new Date();
134			var clienttime = (now.getTime() / 1000);
135			Meteor.servertimeoffset = timestamp - clienttime;
136			}
137
138			Meteor.prototype.start = function() {
139			this.persist = (this.maxmessages)?1:0;
140			this.smartpoll = (this.smartpoll)?1:0;
141			this.mode = (this.mode=="stream")?"stream":"poll";
142			if (!this.subdomain \|\| !this.channel) throw "Channel or Meteor subdomain host not specified";
143			var now = new Date();
144			var t = now.getTime();
145			if (typeof(this.transferDoc)=="object") {
146			this.transferDoc.open();
147			this.transferDoc.close();
148			delete this.transferDoc;
149			}
150			if (document.getElementById("meteorframe_"+this.instID)) {
151			document.body.removeChild(document.getElementById("meteorframe_"+this.instID));
152			}
153			if (this.mode=="stream") {
154			if (document.all) {
155	andrew.betts	7	this.setstatus(1);
156	andrew.betts	6	this.transferDoc = new ActiveXObject("htmlfile");
157			this.transferDoc.open();
158			this.transferDoc.write("<html>");
159			this.transferDoc.write("<script>document.domain=\""+(document.domain)+"\";</"+"script>");
160			this.transferDoc.write("</html>");
161			var selfref = this;
162			this.transferDoc.parentWindow.Meteor = Meteor;
163			this.transferDoc.close();
164			var ifrDiv = this.transferDoc.createElement("div");
165			this.transferDoc.appendChild(ifrDiv);
166			var url = "http://"+this.subdomain+"."+location.hostname+"/"+this.dynamicpageaddress+"?channel="+this.channel+"&id="+this.MHostId;
167			if (this.lastmsgreceived >= 0) {
168			url += "&restartfrom="+this.lastmsgreceived;
169			} else if (this.backtrack > 0) {
170			url += "&backtrack="+this.backtrack;
171			} else if (this.backtrack < 0 \|\| isNaN(this.backtrack)) {
172			url += "&restartfrom=";
173			}
174			ifrDiv.innerHTML = "<iframe id=\"meteorframe_"+this.instID+"\" src=\""+url+"&nocache="+t+"\" style=\"display: none;\"></iframe>";
175			} else {
176			var ifr = document.createElement("IFRAME");
177			ifr.style.width = "10px";
178			ifr.style.height = "10px";
179			ifr.style.border = "none";
180			ifr.style.position = "absolute";
181			ifr.style.top = "-10px";
182			ifr.style.marginTop = "-10px";
183			ifr.style.zIndex = "-20";
184			ifr.id = "meteorframe_"+this.instID;
185			document.body.appendChild(ifr);
186	andrew.betts	7	this.frameurl = "http://"+this.subdomain+"."+location.hostname+"/stream.html";
187			this.frameload();
188	andrew.betts	6	}
189			var f = this.pollmode.bind(this);
190			clearTimeout(this.pingtimer);
191			this.pingtimer = setTimeout(f, this.pingtimeout);
192
193			} else {
194			var ifr = document.createElement("IFRAME");
195			ifr.style.width = "10px";
196			ifr.style.height = "10px";
197			ifr.style.border = "none";
198			if (document.all) {
199			ifr.style.display = "none";
200			} else {
201			ifr.style.position = "absolute";
202			ifr.style.marginTop = "-10px";
203			ifr.style.zIndex = "-20";
204			}
205			ifr.id = "meteorframe_"+this.instID;
206			document.body.appendChild(ifr);
207	andrew.betts	7	this.frameurl = "http://"+this.subdomain+"."+location.hostname+"/poll.html";
208			this.frameload();
209	andrew.betts	6	this.recvtimes[0] = t;
210			if (this.updatepollfreqtimer) clearTimeout(this.updatepollfreqtimer);
211			this.updatepollfreqtimer = setInterval(this.updatepollfreq.bind(this), 2500);
212			}
213			this.lastrequest = t;
214			}
215
216			Meteor.prototype.pollmode = function() {
217			this.mode="poll";
218			this.start();
219			this.callback_changemode("poll");
220	andrew.betts	7	this.lastpingtime = false;
221	andrew.betts	6	}
222
223			Meteor.prototype.process = function(id, data) {
224			if (id > this.lastmsgreceived) {
225			this.callback_process(data);
226			if (id != -1) this.lastmsgreceived = id;
227			if (this.mode=="poll") {
228			var now = new Date();
229			var t = now.getTime();
230			this.recvtimes[this.recvtimes.length] = t;
231			while (this.recvtimes.length > 5) this.recvtimes.shift();
232			}
233			} else if (id == -1) {
234			this.ping();
235			}
236	andrew.betts	7	this.setstatus(5);
237	andrew.betts	6	}
238
239			Meteor.prototype.ping = function() {
240			if (this.mode=="stream" && this.pingtimer) {
241			clearTimeout(this.pingtimer);
242			var f = this.pollmode.bind(this);
243			this.pingtimer = setTimeout(f, this.pingtimeout);
244			var now = new Date();
245			this.lastpingtime = now.getTime();
246			}
247	andrew.betts	7	this.setstatus(5);
248	andrew.betts	6	}
249
250			Meteor.prototype.reset = function() {
251			var now = new Date();
252			var t = now.getTime();
253			var x = this.pollfreq - (t-this.lastrequest);
254			if (x < 10) x = 10;
255			this.ping();
256			this.callback_reset();
257			setTimeout(this.start.bind(this), x);
258			}
259
260			Meteor.prototype.eof = function() {
261			this.callback_eof();
262			}
263
264			Meteor.prototype.get = function(varname) {
265			eval("var a = this."+varname+";");
266			if (typeof(a) == "undefined") throw "Cannot get value of "+varname;
267			return a;
268			}
269
270			Meteor.prototype.increasepolldelay = function() {
271			this.pollfreq *= 2;
272			}
273
274			Meteor.prototype.updatepollfreq = function() {
275			if (this.smartpoll) {
276			var now = new Date();
277			var t = now.getTime();
278			var avg = 0;
279			for (var i=1; i<this.recvtimes.length; i++) {
280			var x = (this.recvtimes[i]-this.recvtimes[i-1]);
281			avg += (x>60000)? 60000 : x;
282			}
283			x = (t-this.recvtimes[this.recvtimes.length-1]);
284			avg += (x>180000)? 180000 : x;
285			avg /= this.recvtimes.length;
286			if ((avg/3) < this.pollfreq && (avg/3) >= this.minpollfreq) this.pollfreq = Math.ceil(this.pollfreq*0.9);
287			if ((avg/3) > this.pollfreq) this.pollfreq = Math.floor(this.pollfreq*1.05);
288			}
289			}
290
291			Meteor.prototype.registerEventCallback = function(evt, funcRef) {
292			if (evt=="process") {
293			this.callback_process = (this.callback_process).andThen(funcRef);
294			} else if (evt=="reset") {
295			this.callback_reset = (this.callback_reset).andThen(funcRef);
296			} else if (evt=="eof") {
297			this.callback_eof = (this.callback_eof).andThen(funcRef);
298			} else if (evt=="changemode") {
299			this.callback_changemode = (this.callback_changemode).andThen(funcRef);
300	andrew.betts	7	} else if (evt=="changestatus") {
301			this.callback_statuschanged = (this.callback_statuschanged).andThen(funcRef);
302	andrew.betts	6	}
303			}
304
305	andrew.betts	7	Meteor.prototype.frameload = function() {
306			this.setstatus(2);
307			if (document.getElementById("meteorframe_"+this.instID)) {
308			var f = this.frameloadtimeout.bind(this);
309			this.frameloadtimer = setTimeout(f, 5000);
310			document.getElementById("meteorframe_"+this.instID).src = "about:blank";
311			setTimeout(this.doloadurl.bind(this), 100);
312			}
313			}
314			Meteor.prototype.doloadurl = function() {
315			var now = new Date();
316			var t = now.getTime();
317			document.getElementById("meteorframe_"+this.instID).src = this.frameurl+"?nocache="+t;
318			}
319			Meteor.prototype.frameloadtimeout = function() {
320			if (this.frameloadtimer) clearTimeout(this.frameloadtimer);
321			this.setstatus(3);
322			this.frameload();
323			}
324			Meteor.prototype.setstatus = function(newstatus) {
325			if (this.status != newstatus) {
326			this.status = newstatus;
327			this.callback_statuschanged(newstatus);
328			}
329			}
330	andrew.betts	6
331			Meteor.createCookie = function(name,value,days) {
332			if (days) {
333			var date = new Date();
334			date.setTime(date.getTime()+(days2460601000));
335			var expires = "; expires="+date.toGMTString();
336			}
337			else var expires = "";
338			document.cookie = name+"="+value+expires+"; path=/";
339			}
340
341			Meteor.readCookie = function(name) {
342			var nameEQ = name + "=";
343			var ca = document.cookie.split(';');
344			for(var i=0;i < ca.length;i++) {
345			var c = ca[i];
346			while (c.charAt(0)==' ') c = c.substring(1,c.length);
347			if (c.indexOf(nameEQ) == 0) return c.substring(nameEQ.length,c.length);
348			}
349			return null;
350			}
351
352			Meteor.eraseCookie = function(name) {
353			createCookie(name,"",-1);
354	andrew.betts	3	}