sessvars = function() {
    var x = {};
    x.$ = {
        prefs: {
            memLimit: 2000,
            autoFlush: true,
            crossDomain: false,
            includeProtos: false,
            includeFunctions: false
        },
        parent: x,
        clearMem: function() {
            for (var i in this.parent) { if (i != "$") { this.parent[i] = undefined } };
            this.flush();
        },
        usedMem: function() {
            x = {};
            return Math.round(this.flush(x) / 1024);
        },
        usedMemPercent: function() {
            return Math.round(this.usedMem() / this.prefs.memLimit);
        },
        flush: function(x) {
            var y, o = {}, j = this.$$;
            x = x || top;
            for (var i in this.parent) { o[i] = this.parent[i] };
            o.$ = this.prefs;
            j.includeProtos = this.prefs.includeProtos;
            j.includeFunctions = this.prefs.includeFunctions;
            y = this.$$.make(o);
            if (x != top) { return y.length };
            if (y.length / 1024 > this.prefs.memLimit) { return false }
            x.name = y;
            return true;
        },
        getDomain: function() {
            var l = location.href;
            l = l.split("///").join("//");
            l = l.substring(l.indexOf("://") + 3).split("/")[0];
            while (l.split(".").length > 2) { l = l.substring(l.indexOf(".") + 1) };
            return l
        },
        debug: function(t) {
            var t = t || this, a = arguments.callee;
            if (!document.body) { setTimeout(function() { a(t) }, 200); return };
            t.flush();
            var d = getElement("sessvarsDebugDiv");
            if (!d) { d = document.createElement("div"); document.body.insertBefore(d, document.body.firstChild) };
            d.id = "sessvarsDebugDiv";
            d.innerHTML = '<div style="line-height:20px;padding:5px;font-size:11px;font-family:Verdana,Arial,Helvetica;' +
'z-index:10000;background:#FFFFCC;border: 1px solid #333;margin-bottom:12px">' +
'<b style="font-family:Trebuchet MS;font-size:20px">sessvars.js - debug info:</b><br/><br/>' +
'Memory usage: ' + t.usedMem() + ' Kb (' + t.usedMemPercent() + '%)&nbsp;&nbsp;&nbsp;' +
'<span style="cursor:pointer"><b>[Clear memory]</b></span><br/>' +
top.name.split('\n').join('<br/>') + '</div>';
            d.getElementsByTagName('span')[0].onclick = function() { t.clearMem(); location.reload() }
        },
        init: function() {
            var o = {}, t = this;
            try { o = this.$$.toObject(top.name) } catch (e) { o = {} };
            this.prefs = o.$ || t.prefs;
            if (this.prefs.crossDomain || this.prefs.currentDomain == this.getDomain()) {
                for (var i in o) { this.parent[i] = o[i] };
            }
            else {
                this.prefs.currentDomain = this.getDomain();
            };
            this.parent.$ = t;
            t.flush();
            var f = function() { if (t.prefs.autoFlush) { t.flush() } };
            if (window["addEventListener"]) { addEventListener("unload", f, false) }
            else if (window["attachEvent"]) { window.attachEvent("onunload", f) }
            else { this.prefs.autoFlush = false };
        }
    };
    x.$.$$ = {
        compactOutput: false,
        includeProtos: false,
        includeFunctions: false,
        detectCirculars: true,
        restoreCirculars: true,
        make: function(arg, restore) {
            this.restore = restore;
            this.mem = []; this.pathMem = [];
            return this.toJsonStringArray(arg).join('');
        },
        toObject: function(x) {
            if (!this.cleaner) {
                try { this.cleaner = new RegExp('^("(\\\\.|[^"\\\\\\n\\r])*?"|[,:{}\\[\\]0-9.\\-+Eaeflnr-u \\n\\r\\t])+?$') }
                catch (a) { this.cleaner = /^(true|false|null|\[.*\]|\{.*\}|".*"|\d+|\d+\.\d+)$/ }
            };
            if (!this.cleaner.test(x)) { return {} };
            eval("this.myObj=" + x);
            if (!this.restoreCirculars || !alert) { return this.myObj };
            if (this.includeFunctions) {
                var x = this.myObj;
                for (var i in x) {
                    if (typeof x[i] == "string" && !x[i].indexOf("JSONincludedFunc:")) {
                        x[i] = x[i].substring(17);
                        eval("x[i]=" + x[i])
                    } 
                }
            };
            this.restoreCode = [];
            this.make(this.myObj, true);
            var r = this.restoreCode.join(";") + ";";
            eval('r=r.replace(/\\W([0-9]{1,})(\\W)/g,"[$1]$2").replace(/\\.\\;/g,";")');
            eval(r);
            return this.myObj
        },
        toJsonStringArray: function(arg, out) {
            if (!out) { this.path = [] };
            out = out || [];
            var u; switch (typeof arg) {
                case 'object':
                    this.lastObj = arg;
                    if (this.detectCirculars) {
                        var m = this.mem; var n = this.pathMem;
                        for (var i = 0; i < m.length; ++i) {
                            if (arg === m[i]) {
                                out.push('"JSONcircRef:' + n[i] + '"'); return out
                            }
                        };
                        m.push(arg); n.push(this.path.join("."));
                    };
                    if (arg) {
                        if (arg.constructor == Array) {
                            out.push('[');
                            for (var i = 0; i < arg.length; ++i) {
                                this.path.push(i);
                                if (i > 0)
                                    out.push(',\n');
                                this.toJsonStringArray(arg[i], out);
                                this.path.pop();
                            }
                            out.push(']');
                            return out;
                        } else if (typeof arg.toString != 'undefined') {
                            out.push('{');
                            var first = true;
                            for (var i in arg) {
                                if (!this.includeProtos && arg[i] === arg.constructor.prototype[i]) { continue };
                                this.path.push(i);
                                var curr = out.length;
                                if (!first)
                                    out.push(this.compactOutput ? ',' : ',\n');
                                this.toJsonStringArray(i, out);
                                out.push(':');
                                this.toJsonStringArray(arg[i], out);
                                if (out[out.length - 1] == u)
                                    out.splice(curr, out.length - curr);
                                else
                                    first = false;
                                this.path.pop();
                            }
                            out.push('}');
                            return out;
                        }
                        return out;
                    }
                    out.push('null');
                    return out;
                case 'unknown':
                case 'undefined':
                case 'function':
                    if (!this.includeFunctions) { out.push(u); return out };
                    arg = "JSONincludedFunc:" + arg;
                    out.push('"');
                    var a = ['\n', '\\n', '\r', '\\r', '"', '\\"'];
                    arg += ""; for (var i = 0; i < 6; i += 2) { arg = arg.split(a[i]).join(a[i + 1]) };
                    out.push(arg);
                    out.push('"');
                    return out;
                case 'string':
                    if (this.restore && arg.indexOf("JSONcircRef:") == 0) {
                        this.restoreCode.push('this.myObj.' + this.path.join(".") + "=" + arg.split("JSONcircRef:").join("this.myObj."));
                    };
                    out.push('"');
                    var a = ['\n', '\\n', '\r', '\\r', '"', '\\"'];
                    arg += ""; for (var i = 0; i < 6; i += 2) { arg = arg.split(a[i]).join(a[i + 1]) };
                    out.push(arg);
                    out.push('"');
                    return out;
                default:
                    out.push(String(arg));
                    return out;
            }
        }
    };
    x.$.init();
    return x;
} ()