diff --git a/js/asyncRunner.js b/js/asyncRunner.js
index 6c2efeb4..39a8fcb0 100644
--- a/js/asyncRunner.js
+++ b/js/asyncRunner.js
@@ -6,7 +6,8 @@ define([
     "underscore",
     "core",
     "utils",
-    "extensionMgr"
+    "extensionMgr",
+    "libs/stacktrace",
 ], function(_, core, utils, extensionMgr) {
 
     var asyncRunner = {};
@@ -22,6 +23,7 @@ define([
         task.finished = false;
         task.timeout = ASYNC_TASK_DEFAULT_TIMEOUT;
         task.retryCounter = 0;
+        task.callPath = [];
         /**
          * onRun callbacks are called by chain(). These callbacks have to call
          * chain() themselves to chain with next onRun callback or error() to
@@ -54,6 +56,7 @@ define([
          * onRun callback during execution.
          */
         task.chain = function(callback) {
+            task.callPath.unshift(printStackTrace()[5]);
             if(task.finished === true) {
                 return;
             }
@@ -82,10 +85,11 @@ define([
          * ends the task by throwing an exception.
          */
         task.error = function(error) {
+            task.callPath.unshift(printStackTrace()[5]);
             if(task.finished === true) {
                 return;
             }
-            error = error || new Error("Unknown error");
+            error = error || new Error("Unknown error|\n" + task.callPath.join("\n"));
             if(error.message) {
                 extensionMgr.onError(error);
             }
@@ -110,6 +114,7 @@ define([
             var delay = Math.pow(2, task.retryCounter++) * 1000;
             currentTaskStartTime = utils.currentTime + delay;
             currentTaskRunning = false;
+            task.callPath = [];
             asyncRunner.runTask();
         };
         return task;
@@ -124,7 +129,7 @@ define([
             if(currentTaskRunning === true) {
                 // If the current task takes too long
                 if(currentTaskStartTime + currentTask.timeout < utils.currentTime) {
-                    currentTask.error(new Error("A timeout occurred."));
+                    currentTask.error(new Error("A timeout occurred.|\n" + currentTask.callPath.join("\n")));
                 }
                 return;
             }
diff --git a/js/extensions/dialogAbout.js b/js/extensions/dialogAbout.js
index a0fbec6c..0a375aa4 100644
--- a/js/extensions/dialogAbout.js
+++ b/js/extensions/dialogAbout.js
@@ -26,6 +26,7 @@ define([
         "Pagedown-extra": "https://github.com/jmcmanus/pagedown-extra/",
         "Prettify": "https://code.google.com/p/google-code-prettify/",
         "RequireJS": "http://requirejs.org/",
+        "stacktrace.js": "http://stacktracejs.com/",
         "UI Layout": "http://layout.jquery-dev.net/",
         "Underscore.js": "http://underscorejs.org/",
         "waitForImages": "https://github.com/alexanderdickson/waitForImages"
diff --git a/js/libs/stacktrace.js b/js/libs/stacktrace.js
new file mode 100644
index 00000000..8990e376
--- /dev/null
+++ b/js/libs/stacktrace.js
@@ -0,0 +1,446 @@
+// Domain Public by Eric Wendelin http://eriwen.com/ (2008)
+//                  Luke Smith http://lucassmith.name/ (2008)
+//                  Loic Dachary <loic@dachary.org> (2008)
+//                  Johan Euphrosine <proppy@aminche.com> (2008)
+//                  Oyvind Sean Kinsey http://kinsey.no/blog (2010)
+//                  Victor Homyakov <victor-homyakov@users.sourceforge.net> (2010)
+
+/**
+ * Main function giving a function stack trace with a forced or passed in Error
+ *
+ * @cfg {Error} e The error to create a stacktrace from (optional)
+ * @cfg {Boolean} guess If we should try to resolve the names of anonymous functions
+ * @return {Array} of Strings with functions, lines, files, and arguments where possible
+ */
+function printStackTrace(options) {
+    options = options || {guess: true};
+    var ex = options.e || null, guess = !!options.guess;
+    var p = new printStackTrace.implementation(), result = p.run(ex);
+    return (guess) ? p.guessAnonymousFunctions(result) : result;
+}
+
+if (typeof module !== "undefined" && module.exports) {
+    module.exports = printStackTrace;
+}
+
+printStackTrace.implementation = function() {
+};
+
+printStackTrace.implementation.prototype = {
+    /**
+     * @param {Error} ex The error to create a stacktrace from (optional)
+     * @param {String} mode Forced mode (optional, mostly for unit tests)
+     */
+    run: function(ex, mode) {
+        ex = ex || this.createException();
+        // examine exception properties w/o debugger
+        //for (var prop in ex) {alert("Ex['" + prop + "']=" + ex[prop]);}
+        mode = mode || this.mode(ex);
+        if (mode === 'other') {
+            return this.other(arguments.callee);
+        } else {
+            return this[mode](ex);
+        }
+    },
+
+    createException: function() {
+        try {
+            this.undef();
+        } catch (e) {
+            return e;
+        }
+    },
+
+    /**
+     * Mode could differ for different exception, e.g.
+     * exceptions in Chrome may or may not have arguments or stack.
+     *
+     * @return {String} mode of operation for the exception
+     */
+    mode: function(e) {
+        if (e['arguments'] && e.stack) {
+            return 'chrome';
+        } else if (e.stack && e.sourceURL) {
+            return 'safari';
+        } else if (e.stack && e.number) {
+            return 'ie';
+        } else if (typeof e.message === 'string' && typeof window !== 'undefined' && window.opera) {
+            // e.message.indexOf("Backtrace:") > -1 -> opera
+            // !e.stacktrace -> opera
+            if (!e.stacktrace) {
+                return 'opera9'; // use e.message
+            }
+            // 'opera#sourceloc' in e -> opera9, opera10a
+            if (e.message.indexOf('\n') > -1 && e.message.split('\n').length > e.stacktrace.split('\n').length) {
+                return 'opera9'; // use e.message
+            }
+            // e.stacktrace && !e.stack -> opera10a
+            if (!e.stack) {
+                return 'opera10a'; // use e.stacktrace
+            }
+            // e.stacktrace && e.stack -> opera10b
+            if (e.stacktrace.indexOf("called from line") < 0) {
+                return 'opera10b'; // use e.stacktrace, format differs from 'opera10a'
+            }
+            // e.stacktrace && e.stack -> opera11
+            return 'opera11'; // use e.stacktrace, format differs from 'opera10a', 'opera10b'
+        } else if (e.stack) {
+            return 'firefox';
+        }
+        return 'other';
+    },
+
+    /**
+     * Given a context, function name, and callback function, overwrite it so that it calls
+     * printStackTrace() first with a callback and then runs the rest of the body.
+     *
+     * @param {Object} context of execution (e.g. window)
+     * @param {String} functionName to instrument
+     * @param {Function} function to call with a stack trace on invocation
+     */
+    instrumentFunction: function(context, functionName, callback) {
+        context = context || window;
+        var original = context[functionName];
+        context[functionName] = function instrumented() {
+            callback.call(this, printStackTrace().slice(4));
+            return context[functionName]._instrumented.apply(this, arguments);
+        };
+        context[functionName]._instrumented = original;
+    },
+
+    /**
+     * Given a context and function name of a function that has been
+     * instrumented, revert the function to it's original (non-instrumented)
+     * state.
+     *
+     * @param {Object} context of execution (e.g. window)
+     * @param {String} functionName to de-instrument
+     */
+    deinstrumentFunction: function(context, functionName) {
+        if (context[functionName].constructor === Function &&
+                context[functionName]._instrumented &&
+                context[functionName]._instrumented.constructor === Function) {
+            context[functionName] = context[functionName]._instrumented;
+        }
+    },
+
+    /**
+     * Given an Error object, return a formatted Array based on Chrome's stack string.
+     *
+     * @param e - Error object to inspect
+     * @return Array<String> of function calls, files and line numbers
+     */
+    chrome: function(e) {
+        var stack = (e.stack + '\n').replace(/^\S[^\(]+?[\n$]/gm, '').
+          replace(/^\s+(at eval )?at\s+/gm, '').
+          replace(/^([^\(]+?)([\n$])/gm, '{anonymous}()@$1$2').
+          replace(/^Object.<anonymous>\s*\(([^\)]+)\)/gm, '{anonymous}()@$1').split('\n');
+        stack.pop();
+        return stack;
+    },
+
+    /**
+     * Given an Error object, return a formatted Array based on Safari's stack string.
+     *
+     * @param e - Error object to inspect
+     * @return Array<String> of function calls, files and line numbers
+     */
+    safari: function(e) {
+        return e.stack.replace(/\[native code\]\n/m, '')
+            .replace(/^(?=\w+Error\:).*$\n/m, '')
+            .replace(/^@/gm, '{anonymous}()@')
+            .split('\n');
+    },
+
+    /**
+     * Given an Error object, return a formatted Array based on IE's stack string.
+     *
+     * @param e - Error object to inspect
+     * @return Array<String> of function calls, files and line numbers
+     */
+    ie: function(e) {
+        var lineRE = /^.*at (\w+) \(([^\)]+)\)$/gm;
+        return e.stack.replace(/at Anonymous function /gm, '{anonymous}()@')
+            .replace(/^(?=\w+Error\:).*$\n/m, '')
+            .replace(lineRE, '$1@$2')
+            .split('\n');
+    },
+
+    /**
+     * Given an Error object, return a formatted Array based on Firefox's stack string.
+     *
+     * @param e - Error object to inspect
+     * @return Array<String> of function calls, files and line numbers
+     */
+    firefox: function(e) {
+        return e.stack.replace(/(?:\n@:0)?\s+$/m, '').replace(/^[\(@]/gm, '{anonymous}()@').split('\n');
+    },
+
+    opera11: function(e) {
+        var ANON = '{anonymous}', lineRE = /^.*line (\d+), column (\d+)(?: in (.+))? in (\S+):$/;
+        var lines = e.stacktrace.split('\n'), result = [];
+
+        for (var i = 0, len = lines.length; i < len; i += 2) {
+            var match = lineRE.exec(lines[i]);
+            if (match) {
+                var location = match[4] + ':' + match[1] + ':' + match[2];
+                var fnName = match[3] || "global code";
+                fnName = fnName.replace(/<anonymous function: (\S+)>/, "$1").replace(/<anonymous function>/, ANON);
+                result.push(fnName + '@' + location + ' -- ' + lines[i + 1].replace(/^\s+/, ''));
+            }
+        }
+
+        return result;
+    },
+
+    opera10b: function(e) {
+        // "<anonymous function: run>([arguments not available])@file://localhost/G:/js/stacktrace.js:27\n" +
+        // "printStackTrace([arguments not available])@file://localhost/G:/js/stacktrace.js:18\n" +
+        // "@file://localhost/G:/js/test/functional/testcase1.html:15"
+        var lineRE = /^(.*)@(.+):(\d+)$/;
+        var lines = e.stacktrace.split('\n'), result = [];
+
+        for (var i = 0, len = lines.length; i < len; i++) {
+            var match = lineRE.exec(lines[i]);
+            if (match) {
+                var fnName = match[1]? (match[1] + '()') : "global code";
+                result.push(fnName + '@' + match[2] + ':' + match[3]);
+            }
+        }
+
+        return result;
+    },
+
+    /**
+     * Given an Error object, return a formatted Array based on Opera 10's stacktrace string.
+     *
+     * @param e - Error object to inspect
+     * @return Array<String> of function calls, files and line numbers
+     */
+    opera10a: function(e) {
+        // "  Line 27 of linked script file://localhost/G:/js/stacktrace.js\n"
+        // "  Line 11 of inline#1 script in file://localhost/G:/js/test/functional/testcase1.html: In function foo\n"
+        var ANON = '{anonymous}', lineRE = /Line (\d+).*script (?:in )?(\S+)(?:: In function (\S+))?$/i;
+        var lines = e.stacktrace.split('\n'), result = [];
+
+        for (var i = 0, len = lines.length; i < len; i += 2) {
+            var match = lineRE.exec(lines[i]);
+            if (match) {
+                var fnName = match[3] || ANON;
+                result.push(fnName + '()@' + match[2] + ':' + match[1] + ' -- ' + lines[i + 1].replace(/^\s+/, ''));
+            }
+        }
+
+        return result;
+    },
+
+    // Opera 7.x-9.2x only!
+    opera9: function(e) {
+        // "  Line 43 of linked script file://localhost/G:/js/stacktrace.js\n"
+        // "  Line 7 of inline#1 script in file://localhost/G:/js/test/functional/testcase1.html\n"
+        var ANON = '{anonymous}', lineRE = /Line (\d+).*script (?:in )?(\S+)/i;
+        var lines = e.message.split('\n'), result = [];
+
+        for (var i = 2, len = lines.length; i < len; i += 2) {
+            var match = lineRE.exec(lines[i]);
+            if (match) {
+                result.push(ANON + '()@' + match[2] + ':' + match[1] + ' -- ' + lines[i + 1].replace(/^\s+/, ''));
+            }
+        }
+
+        return result;
+    },
+
+    // Safari 5-, IE 9-, and others
+    other: function(curr) {
+        var ANON = '{anonymous}', fnRE = /function\s*([\w\-$]+)?\s*\(/i, stack = [], fn, args, maxStackSize = 10;
+        while (curr && curr['arguments'] && stack.length < maxStackSize) {
+            fn = fnRE.test(curr.toString()) ? RegExp.$1 || ANON : ANON;
+            args = Array.prototype.slice.call(curr['arguments'] || []);
+            stack[stack.length] = fn + '(' + this.stringifyArguments(args) + ')';
+            curr = curr.caller;
+        }
+        return stack;
+    },
+
+    /**
+     * Given arguments array as a String, subsituting type names for non-string types.
+     *
+     * @param {Arguments} args
+     * @return {Array} of Strings with stringified arguments
+     */
+    stringifyArguments: function(args) {
+        var result = [];
+        var slice = Array.prototype.slice;
+        for (var i = 0; i < args.length; ++i) {
+            var arg = args[i];
+            if (arg === undefined) {
+                result[i] = 'undefined';
+            } else if (arg === null) {
+                result[i] = 'null';
+            } else if (arg.constructor) {
+                if (arg.constructor === Array) {
+                    if (arg.length < 3) {
+                        result[i] = '[' + this.stringifyArguments(arg) + ']';
+                    } else {
+                        result[i] = '[' + this.stringifyArguments(slice.call(arg, 0, 1)) + '...' + this.stringifyArguments(slice.call(arg, -1)) + ']';
+                    }
+                } else if (arg.constructor === Object) {
+                    result[i] = '#object';
+                } else if (arg.constructor === Function) {
+                    result[i] = '#function';
+                } else if (arg.constructor === String) {
+                    result[i] = '"' + arg + '"';
+                } else if (arg.constructor === Number) {
+                    result[i] = arg;
+                }
+            }
+        }
+        return result.join(',');
+    },
+
+    sourceCache: {},
+
+    /**
+     * @return the text from a given URL
+     */
+    ajax: function(url) {
+        var req = this.createXMLHTTPObject();
+        if (req) {
+            try {
+                req.open('GET', url, false);
+                //req.overrideMimeType('text/plain');
+                //req.overrideMimeType('text/javascript');
+                req.send(null);
+                //return req.status == 200 ? req.responseText : '';
+                return req.responseText;
+            } catch (e) {
+            }
+        }
+        return '';
+    },
+
+    /**
+     * Try XHR methods in order and store XHR factory.
+     *
+     * @return <Function> XHR function or equivalent
+     */
+    createXMLHTTPObject: function() {
+        var xmlhttp, XMLHttpFactories = [
+            function() {
+                return new XMLHttpRequest();
+            }, function() {
+                return new ActiveXObject('Msxml2.XMLHTTP');
+            }, function() {
+                return new ActiveXObject('Msxml3.XMLHTTP');
+            }, function() {
+                return new ActiveXObject('Microsoft.XMLHTTP');
+            }
+        ];
+        for (var i = 0; i < XMLHttpFactories.length; i++) {
+            try {
+                xmlhttp = XMLHttpFactories[i]();
+                // Use memoization to cache the factory
+                this.createXMLHTTPObject = XMLHttpFactories[i];
+                return xmlhttp;
+            } catch (e) {
+            }
+        }
+    },
+
+    /**
+     * Given a URL, check if it is in the same domain (so we can get the source
+     * via Ajax).
+     *
+     * @param url <String> source url
+     * @return False if we need a cross-domain request
+     */
+    isSameDomain: function(url) {
+        return typeof location !== "undefined" && url.indexOf(location.hostname) !== -1; // location may not be defined, e.g. when running from nodejs.
+    },
+
+    /**
+     * Get source code from given URL if in the same domain.
+     *
+     * @param url <String> JS source URL
+     * @return <Array> Array of source code lines
+     */
+    getSource: function(url) {
+        // TODO reuse source from script tags?
+        if (!(url in this.sourceCache)) {
+            this.sourceCache[url] = this.ajax(url).split('\n');
+        }
+        return this.sourceCache[url];
+    },
+
+    guessAnonymousFunctions: function(stack) {
+        for (var i = 0; i < stack.length; ++i) {
+            var reStack = /\{anonymous\}\(.*\)@(.*)/,
+                reRef = /^(.*?)(?::(\d+))(?::(\d+))?(?: -- .+)?$/,
+                frame = stack[i], ref = reStack.exec(frame);
+
+            if (ref) {
+                var m = reRef.exec(ref[1]);
+                if (m) { // If falsey, we did not get any file/line information
+                    var file = m[1], lineno = m[2], charno = m[3] || 0;
+                    if (file && this.isSameDomain(file) && lineno) {
+                        var functionName = this.guessAnonymousFunction(file, lineno, charno);
+                        stack[i] = frame.replace('{anonymous}', functionName);
+                    }
+                }
+            }
+        }
+        return stack;
+    },
+
+    guessAnonymousFunction: function(url, lineNo, charNo) {
+        var ret;
+        try {
+            ret = this.findFunctionName(this.getSource(url), lineNo);
+        } catch (e) {
+            ret = 'getSource failed with url: ' + url + ', exception: ' + e.toString();
+        }
+        return ret;
+    },
+
+    findFunctionName: function(source, lineNo) {
+        // FIXME findFunctionName fails for compressed source
+        // (more than one function on the same line)
+        // function {name}({args}) m[1]=name m[2]=args
+        var reFunctionDeclaration = /function\s+([^(]*?)\s*\(([^)]*)\)/;
+        // {name} = function ({args}) TODO args capture
+        // /['"]?([0-9A-Za-z_]+)['"]?\s*[:=]\s*function(?:[^(]*)/
+        var reFunctionExpression = /['"]?([$_A-Za-z][$_A-Za-z0-9]*)['"]?\s*[:=]\s*function\b/;
+        // {name} = eval()
+        var reFunctionEvaluation = /['"]?([$_A-Za-z][$_A-Za-z0-9]*)['"]?\s*[:=]\s*(?:eval|new Function)\b/;
+        // Walk backwards in the source lines until we find
+        // the line which matches one of the patterns above
+        var code = "", line, maxLines = Math.min(lineNo, 20), m, commentPos;
+        for (var i = 0; i < maxLines; ++i) {
+            // lineNo is 1-based, source[] is 0-based
+            line = source[lineNo - i - 1];
+            commentPos = line.indexOf('//');
+            if (commentPos >= 0) {
+                line = line.substr(0, commentPos);
+            }
+            // TODO check other types of comments? Commented code may lead to false positive
+            if (line) {
+                code = line + code;
+                m = reFunctionExpression.exec(code);
+                if (m && m[1]) {
+                    return m[1];
+                }
+                m = reFunctionDeclaration.exec(code);
+                if (m && m[1]) {
+                    //return m[1] + "(" + (m[2] || "") + ")";
+                    return m[1];
+                }
+                m = reFunctionEvaluation.exec(code);
+                if (m && m[1]) {
+                    return m[1];
+                }
+            }
+        }
+        return '(?)';
+    }
+};
diff --git a/js/main-min.js b/js/main-min.js
index 5725fa18..0d5cd3c7 100644
--- a/js/main-min.js
+++ b/js/main-min.js
@@ -582,6 +582,14 @@ function css_browser_selector(e) {
  x;
 }
 
+function printStackTrace(e) {
+ e = e || {
+  guess: !0
+ };
+ var t = e.e || null, n = !!e.guess, i = new printStackTrace.implementation(), o = i.run(t);
+ return n ? i.guessAnonymousFunctions(o) : o;
+}
+
 (function(e, t) {
  function n(e) {
   var t = e.length, n = lt.type(e);
@@ -705,7 +713,7 @@ function css_browser_selector(e) {
   }
  }
  function b(e, n) {
-  var i, o, r = 0, s = typeof e.getElementsByTagName !== V ? e.getElementsByTagName(n || "*") : typeof e.querySelectorAll !== V ? e.querySelectorAll(n || "*") : t;
+  var i, o, r = 0, s = typeof e.getElementsByTagName !== X ? e.getElementsByTagName(n || "*") : typeof e.querySelectorAll !== X ? e.querySelectorAll(n || "*") : t;
   if (!s) for (s = [], i = e.childNodes || e; null != (o = i[r]); r++) !n || lt.nodeName(o, n) ? s.push(o) : lt.merge(s, b(o, n));
   return n === t || n && lt.nodeName(e, n) ? lt.merge([ e ], s) : s;
  }
@@ -747,7 +755,7 @@ function css_browser_selector(e) {
   return o + T(e, t, n || (s ? "border" : "content"), i, r) + "px";
  }
  function E(e) {
-  var t = X, n = xn[e];
+  var t = V, n = xn[e];
   return n || (n = P(e, t), "none" !== n && n || (un = (un || lt("<iframe frameborder='0' width='0' height='0'/>").css("cssText", "display:block !important")).appendTo(t.documentElement), 
   t = (un[0].contentWindow || un[0].contentDocument).document, t.write("<!doctype html><html><body>"), 
   t.close(), n = P(e, t), un.detach()), xn[e] = n), n;
@@ -941,15 +949,15 @@ function css_browser_selector(e) {
  function q(e) {
   return lt.isWindow(e) ? e : 9 === e.nodeType ? e.defaultView || e.parentWindow : !1;
  }
- var G, U, V = typeof t, X = e.document, Y = e.location, K = e.jQuery, J = e.$, Q = {}, Z = [], et = "1.9.1", tt = Z.concat, nt = Z.push, it = Z.slice, ot = Z.indexOf, rt = Q.toString, st = Q.hasOwnProperty, at = et.trim, lt = function(e, t) {
+ var G, U, X = typeof t, V = e.document, Y = e.location, K = e.jQuery, J = e.$, Q = {}, Z = [], et = "1.9.1", tt = Z.concat, nt = Z.push, it = Z.slice, ot = Z.indexOf, rt = Q.toString, st = Q.hasOwnProperty, at = et.trim, lt = function(e, t) {
   return new lt.fn.init(e, t, U);
  }, ct = /[+-]?(?:\d*\.|)\d+(?:[eE][+-]?\d+|)/.source, ut = /\S+/g, dt = /^[\s\uFEFF\xA0]+|[\s\uFEFF\xA0]+$/g, pt = /^(?:(<[\w\W]+>)[^>]*|#([\w-]*))$/, ft = /^<(\w+)\s*\/?>(?:<\/\1>|)$/, ht = /^[\],:{}\s]*$/, gt = /(?:^|:|,)(?:\s*\[)+/g, mt = /\\(?:["\\\/bfnrt]|u[\da-fA-F]{4})/g, vt = /"[^"\\\r\n]*"|true|false|null|-?(?:\d+\.|)\d+(?:[eE][+-]?\d+|)/g, yt = /^-ms-/, bt = /-([\da-z])/gi, wt = function(e, t) {
   return t.toUpperCase();
  }, xt = function(e) {
-  (X.addEventListener || "load" === e.type || "complete" === X.readyState) && (Ct(), 
+  (V.addEventListener || "load" === e.type || "complete" === V.readyState) && (Ct(), 
   lt.ready());
  }, Ct = function() {
-  X.addEventListener ? (X.removeEventListener("DOMContentLoaded", xt, !1), e.removeEventListener("load", xt, !1)) : (X.detachEvent("onreadystatechange", xt), 
+  V.addEventListener ? (V.removeEventListener("DOMContentLoaded", xt, !1), e.removeEventListener("load", xt, !1)) : (V.detachEvent("onreadystatechange", xt), 
   e.detachEvent("onload", xt));
  };
  lt.fn = lt.prototype = {
@@ -962,15 +970,15 @@ function css_browser_selector(e) {
     if (o = "<" === e.charAt(0) && ">" === e.charAt(e.length - 1) && e.length >= 3 ? [ null, e, null ] : pt.exec(e), 
     !o || !o[1] && n) return !n || n.jquery ? (n || i).find(e) : this.constructor(n).find(e);
     if (o[1]) {
-     if (n = n instanceof lt ? n[0] : n, lt.merge(this, lt.parseHTML(o[1], n && n.nodeType ? n.ownerDocument || n : X, !0)), 
+     if (n = n instanceof lt ? n[0] : n, lt.merge(this, lt.parseHTML(o[1], n && n.nodeType ? n.ownerDocument || n : V, !0)), 
      ft.test(o[1]) && lt.isPlainObject(n)) for (o in n) lt.isFunction(this[o]) ? this[o](n[o]) : this.attr(o, n[o]);
      return this;
     }
-    if (r = X.getElementById(o[2]), r && r.parentNode) {
+    if (r = V.getElementById(o[2]), r && r.parentNode) {
      if (r.id !== o[2]) return i.find(e);
      this.length = 1, this[0] = r;
     }
-    return this.context = X, this.selector = e, this;
+    return this.context = V, this.selector = e, this;
    }
    return e.nodeType ? (this.context = this[0] = e, this.length = 1, this) : lt.isFunction(e) ? i.ready(e) : (e.selector !== t && (this.selector = e.selector, 
    this.context = e.context), lt.makeArray(e, this));
@@ -1038,8 +1046,8 @@ function css_browser_selector(e) {
   },
   ready: function(e) {
    if (e === !0 ? !--lt.readyWait : !lt.isReady) {
-    if (!X.body) return setTimeout(lt.ready);
-    lt.isReady = !0, e !== !0 && --lt.readyWait > 0 || (G.resolveWith(X, [ lt ]), lt.fn.trigger && lt(X).trigger("ready").off("ready"));
+    if (!V.body) return setTimeout(lt.ready);
+    lt.isReady = !0, e !== !0 && --lt.readyWait > 0 || (G.resolveWith(V, [ lt ]), lt.fn.trigger && lt(V).trigger("ready").off("ready"));
    }
   },
   isFunction: function(e) {
@@ -1078,7 +1086,7 @@ function css_browser_selector(e) {
   },
   parseHTML: function(e, t, n) {
    if (!e || "string" != typeof e) return null;
-   "boolean" == typeof t && (n = t, t = !1), t = t || X;
+   "boolean" == typeof t && (n = t, t = !1), t = t || V;
    var i = ft.exec(e), o = !n && [];
    return i ? [ t.createElement(i[1]) ] : (i = lt.buildFragment([ e ], t, o), o && lt(o).remove(), 
    lt.merge([], i.childNodes));
@@ -1178,12 +1186,12 @@ function css_browser_selector(e) {
    return new Date().getTime();
   }
  }), lt.ready.promise = function(t) {
-  if (!G) if (G = lt.Deferred(), "complete" === X.readyState) setTimeout(lt.ready); else if (X.addEventListener) X.addEventListener("DOMContentLoaded", xt, !1), 
+  if (!G) if (G = lt.Deferred(), "complete" === V.readyState) setTimeout(lt.ready); else if (V.addEventListener) V.addEventListener("DOMContentLoaded", xt, !1), 
   e.addEventListener("load", xt, !1); else {
-   X.attachEvent("onreadystatechange", xt), e.attachEvent("onload", xt);
+   V.attachEvent("onreadystatechange", xt), e.attachEvent("onload", xt);
    var n = !1;
    try {
-    n = null == e.frameElement && X.documentElement;
+    n = null == e.frameElement && V.documentElement;
    } catch (i) {}
    n && n.doScroll && function o() {
     if (!lt.isReady) {
@@ -1199,7 +1207,7 @@ function css_browser_selector(e) {
   return G.promise(t);
  }, lt.each("Boolean Number String Function Array Date RegExp Object Error".split(" "), function(e, t) {
   Q["[object " + t + "]"] = t.toLowerCase();
- }), U = lt(X);
+ }), U = lt(V);
  var kt = {};
  lt.Callbacks = function(e) {
   e = "string" == typeof e ? kt[e] || i(e) : lt.extend({}, e);
@@ -1302,10 +1310,10 @@ function css_browser_selector(e) {
    return a || l.resolveWith(i, r), l.promise();
   }
  }), lt.support = function() {
-  var t, n, i, o, r, s, a, l, c, u, d = X.createElement("div");
+  var t, n, i, o, r, s, a, l, c, u, d = V.createElement("div");
   if (d.setAttribute("className", "t"), d.innerHTML = "  <link/><table></table><a href='/a'>a</a><input type='checkbox'/>", 
   n = d.getElementsByTagName("*"), i = d.getElementsByTagName("a")[0], !n || !i || !n.length) return {};
-  r = X.createElement("select"), a = r.appendChild(X.createElement("option")), o = d.getElementsByTagName("input")[0], 
+  r = V.createElement("select"), a = r.appendChild(V.createElement("option")), o = d.getElementsByTagName("input")[0], 
   i.style.cssText = "top:1px;float:left;opacity:.5", t = {
    getSetAttribute: "t" !== d.className,
    leadingWhitespace: 3 === d.firstChild.nodeType,
@@ -1317,9 +1325,9 @@ function css_browser_selector(e) {
    cssFloat: !!i.style.cssFloat,
    checkOn: !!o.value,
    optSelected: a.selected,
-   enctype: !!X.createElement("form").enctype,
-   html5Clone: "<:nav></:nav>" !== X.createElement("nav").cloneNode(!0).outerHTML,
-   boxModel: "CSS1Compat" === X.compatMode,
+   enctype: !!V.createElement("form").enctype,
+   html5Clone: "<:nav></:nav>" !== V.createElement("nav").cloneNode(!0).outerHTML,
+   boxModel: "CSS1Compat" === V.compatMode,
    deleteExpando: !0,
    noCloneEvent: !0,
    inlineBlockNeedsLayout: !1,
@@ -1334,9 +1342,9 @@ function css_browser_selector(e) {
   } catch (p) {
    t.deleteExpando = !1;
   }
-  o = X.createElement("input"), o.setAttribute("value", ""), t.input = "" === o.getAttribute("value"), 
+  o = V.createElement("input"), o.setAttribute("value", ""), t.input = "" === o.getAttribute("value"), 
   o.value = "t", o.setAttribute("type", "radio"), t.radioValue = "t" === o.value, 
-  o.setAttribute("checked", "t"), o.setAttribute("name", "t"), s = X.createDocumentFragment(), 
+  o.setAttribute("checked", "t"), o.setAttribute("name", "t"), s = V.createDocumentFragment(), 
   s.appendChild(o), t.appendChecked = o.checked, t.checkClone = s.cloneNode(!0).cloneNode(!0).lastChild.checked, 
   d.attachEvent && (d.attachEvent("onclick", function() {
    t.noCloneEvent = !1;
@@ -1348,8 +1356,8 @@ function css_browser_selector(e) {
   }) d.setAttribute(l = "on" + u, "t"), t[u + "Bubbles"] = l in e || d.attributes[l].expando === !1;
   return d.style.backgroundClip = "content-box", d.cloneNode(!0).style.backgroundClip = "", 
   t.clearCloneStyle = "content-box" === d.style.backgroundClip, lt(function() {
-   var n, i, o, r = "padding:0;margin:0;border:0;display:block;box-sizing:content-box;-moz-box-sizing:content-box;-webkit-box-sizing:content-box;", s = X.getElementsByTagName("body")[0];
-   s && (n = X.createElement("div"), n.style.cssText = "border:0;width:0;height:0;position:absolute;top:0;left:-9999px;margin-top:1px", 
+   var n, i, o, r = "padding:0;margin:0;border:0;display:block;box-sizing:content-box;-moz-box-sizing:content-box;-webkit-box-sizing:content-box;", s = V.getElementsByTagName("body")[0];
+   s && (n = V.createElement("div"), n.style.cssText = "border:0;width:0;height:0;position:absolute;top:0;left:-9999px;margin-top:1px", 
    s.appendChild(n).appendChild(d), d.innerHTML = "<table><tr><td></td><td>t</td></tr></table>", 
    o = d.getElementsByTagName("td"), o[0].style.cssText = "padding:0;margin:0;border:0;display:none", 
    c = 0 === o[0].offsetHeight, o[0].style.display = "", o[1].style.display = "none", 
@@ -1358,9 +1366,9 @@ function css_browser_selector(e) {
    e.getComputedStyle && (t.pixelPosition = "1%" !== (e.getComputedStyle(d, null) || {}).top, 
    t.boxSizingReliable = "4px" === (e.getComputedStyle(d, null) || {
     width: "4px"
-   }).width, i = d.appendChild(X.createElement("div")), i.style.cssText = d.style.cssText = r, 
+   }).width, i = d.appendChild(V.createElement("div")), i.style.cssText = d.style.cssText = r, 
    i.style.marginRight = i.style.width = "0", d.style.width = "1px", t.reliableMarginRight = !parseFloat((e.getComputedStyle(i, null) || {}).marginRight)), 
-   typeof d.style.zoom !== V && (d.innerHTML = "", d.style.cssText = r + "width:1px;padding:1px;display:inline;zoom:1", 
+   typeof d.style.zoom !== X && (d.innerHTML = "", d.style.cssText = r + "width:1px;padding:1px;display:inline;zoom:1", 
    t.inlineBlockNeedsLayout = 3 === d.offsetWidth, d.style.display = "block", d.innerHTML = "<div></div>", 
    d.firstChild.style.width = "5px", t.shrinkWrapBlocks = 3 !== d.offsetWidth, t.inlineBlockNeedsLayout && (s.style.zoom = 1)), 
    s.removeChild(n), n = d = o = i = null);
@@ -1522,7 +1530,7 @@ function css_browser_selector(e) {
     lt(this).toggleClass(e.call(this, n, this.className, t), t);
    }) : this.each(function() {
     if ("string" === n) for (var o, r = 0, s = lt(this), a = t, l = e.match(ut) || []; o = l[r++]; ) a = i ? a : !s.hasClass(o), 
-    s[a ? "addClass" : "removeClass"](o); else (n === V || "boolean" === n) && (this.className && lt._data(this, "__className__", this.className), 
+    s[a ? "addClass" : "removeClass"](o); else (n === X || "boolean" === n) && (this.className && lt._data(this, "__className__", this.className), 
     this.className = this.className || e === !1 ? "" : lt._data(this, "__className__") || "");
    });
   },
@@ -1570,8 +1578,8 @@ function css_browser_selector(e) {
   },
   attr: function(e, n, i) {
    var o, r, s, a = e.nodeType;
-   if (e && 3 !== a && 8 !== a && 2 !== a) return typeof e.getAttribute === V ? lt.prop(e, n, i) : (r = 1 !== a || !lt.isXMLDoc(e), 
-   r && (n = n.toLowerCase(), o = lt.attrHooks[n] || (Nt.test(n) ? Et : _t)), i === t ? o && r && "get" in o && null !== (s = o.get(e, n)) ? s : (typeof e.getAttribute !== V && (s = e.getAttribute(n)), 
+   if (e && 3 !== a && 8 !== a && 2 !== a) return typeof e.getAttribute === X ? lt.prop(e, n, i) : (r = 1 !== a || !lt.isXMLDoc(e), 
+   r && (n = n.toLowerCase(), o = lt.attrHooks[n] || (Nt.test(n) ? Et : _t)), i === t ? o && r && "get" in o && null !== (s = o.get(e, n)) ? s : (typeof e.getAttribute !== X && (s = e.getAttribute(n)), 
    null == s ? t : s) : null !== i ? o && r && "set" in o && (s = o.set(e, i, n)) !== t ? s : (e.setAttribute(n, i + ""), 
    i) : (lt.removeAttr(e, n), t));
   },
@@ -1701,7 +1709,7 @@ function css_browser_selector(e) {
    if (v) {
     for (i.handler && (c = i, i = c.handler, r = c.selector), i.guid || (i.guid = lt.guid++), 
     (a = v.events) || (a = v.events = {}), (d = v.handle) || (d = v.handle = function(e) {
-     return typeof lt === V || e && lt.event.triggered === e.type ? t : lt.event.dispatch.apply(d.elem, arguments);
+     return typeof lt === X || e && lt.event.triggered === e.type ? t : lt.event.dispatch.apply(d.elem, arguments);
     }, d.elem = e), n = (n || "").match(ut) || [ "" ], l = n.length; l--; ) s = Ht.exec(n[l]) || [], 
     h = m = s[1], g = (s[2] || "").split(".").sort(), u = lt.event.special[h] || {}, 
     h = (r ? u.delegateType : u.bindType) || h, u = lt.event.special[h] || {}, p = lt.extend({
@@ -1735,8 +1743,8 @@ function css_browser_selector(e) {
    }
   },
   trigger: function(n, i, o, r) {
-   var s, a, l, c, u, d, p, f = [ o || X ], h = st.call(n, "type") ? n.type : n, g = st.call(n, "namespace") ? n.namespace.split(".") : [];
-   if (l = d = o = o || X, 3 !== o.nodeType && 8 !== o.nodeType && !jt.test(h + lt.event.triggered) && (h.indexOf(".") >= 0 && (g = h.split("."), 
+   var s, a, l, c, u, d, p, f = [ o || V ], h = st.call(n, "type") ? n.type : n, g = st.call(n, "namespace") ? n.namespace.split(".") : [];
+   if (l = d = o = o || V, 3 !== o.nodeType && 8 !== o.nodeType && !jt.test(h + lt.event.triggered) && (h.indexOf(".") >= 0 && (g = h.split("."), 
    h = g.shift(), g.sort()), a = 0 > h.indexOf(":") && "on" + h, n = n[lt.expando] ? n : new lt.Event(h, "object" == typeof n && n), 
    n.isTrigger = !0, n.namespace = g.join("."), n.namespace_re = n.namespace ? RegExp("(^|\\.)" + g.join("\\.(?:.*\\.|)") + "(\\.|$)") : null, 
    n.result = t, n.target || (n.target = o), i = null == i ? [ n ] : lt.makeArray(i, [ n ]), 
@@ -1744,7 +1752,7 @@ function css_browser_selector(e) {
     if (!r && !u.noBubble && !lt.isWindow(o)) {
      for (c = u.delegateType || h, jt.test(c + h) || (l = l.parentNode); l; l = l.parentNode) f.push(l), 
      d = l;
-     d === (o.ownerDocument || X) && f.push(d.defaultView || d.parentWindow || e);
+     d === (o.ownerDocument || V) && f.push(d.defaultView || d.parentWindow || e);
     }
     for (p = 0; (l = f[p++]) && !n.isPropagationStopped(); ) n.type = p > 1 ? c : u.bindType || h, 
     s = (lt._data(l, "events") || {})[n.type] && lt._data(l, "handle"), s && s.apply(l, i), 
@@ -1791,7 +1799,7 @@ function css_browser_selector(e) {
    for (s || (this.fixHooks[o] = s = Dt.test(o) ? this.mouseHooks : Mt.test(o) ? this.keyHooks : {}), 
    i = s.props ? this.props.concat(s.props) : this.props, e = new lt.Event(r), t = i.length; t--; ) n = i[t], 
    e[n] = r[n];
-   return e.target || (e.target = r.srcElement || X), 3 === e.target.nodeType && (e.target = e.target.parentNode), 
+   return e.target || (e.target = r.srcElement || V), 3 === e.target.nodeType && (e.target = e.target.parentNode), 
    e.metaKey = !!e.metaKey, s.filter ? s.filter(e, r) : e;
   },
   props: "altKey bubbles cancelable ctrlKey currentTarget eventPhase metaKey relatedTarget shiftKey target timeStamp view which".split(" "),
@@ -1807,7 +1815,7 @@ function css_browser_selector(e) {
    props: "button buttons clientX clientY fromElement offsetX offsetY pageX pageY screenX screenY toElement".split(" "),
    filter: function(e, n) {
     var i, o, r, s = n.button, a = n.fromElement;
-    return null == e.pageX && null != n.clientX && (o = e.target.ownerDocument || X, 
+    return null == e.pageX && null != n.clientX && (o = e.target.ownerDocument || V, 
     r = o.documentElement, i = o.body, e.pageX = n.clientX + (r && r.scrollLeft || i && i.scrollLeft || 0) - (r && r.clientLeft || i && i.clientLeft || 0), 
     e.pageY = n.clientY + (r && r.scrollTop || i && i.scrollTop || 0) - (r && r.clientTop || i && i.clientTop || 0)), 
     !e.relatedTarget && a && (e.relatedTarget = a === e.target ? n.toElement : a), e.which || s === t || (e.which = 1 & s ? 1 : 2 & s ? 3 : 4 & s ? 2 : 0), 
@@ -1826,7 +1834,7 @@ function css_browser_selector(e) {
    },
    focus: {
     trigger: function() {
-     if (this !== X.activeElement && this.focus) try {
+     if (this !== V.activeElement && this.focus) try {
       return this.focus(), !1;
      } catch (e) {}
     },
@@ -1834,7 +1842,7 @@ function css_browser_selector(e) {
    },
    blur: {
     trigger: function() {
-     return this === X.activeElement && this.blur ? (this.blur(), !1) : t;
+     return this === V.activeElement && this.blur ? (this.blur(), !1) : t;
     },
     delegateType: "focusout"
    },
@@ -1852,11 +1860,11 @@ function css_browser_selector(e) {
    });
    i ? lt.event.trigger(o, null, t) : lt.event.dispatch.call(t, o), o.isDefaultPrevented() && n.preventDefault();
   }
- }, lt.removeEvent = X.removeEventListener ? function(e, t, n) {
+ }, lt.removeEvent = V.removeEventListener ? function(e, t, n) {
   e.removeEventListener && e.removeEventListener(t, n, !1);
  } : function(e, t, n) {
   var i = "on" + t;
-  e.detachEvent && (typeof e[i] === V && (e[i] = null), e.detachEvent(i, n));
+  e.detachEvent && (typeof e[i] === X && (e[i] = null), e.detachEvent(i, n));
  }, lt.Event = function(e, n) {
   return this instanceof lt.Event ? (e && e.type ? (this.originalEvent = e, this.type = e.type, 
   this.isDefaultPrevented = e.defaultPrevented || e.returnValue === !1 || e.getPreventDefault && e.getPreventDefault() ? l : c) : this.type = e, 
@@ -1934,10 +1942,10 @@ function css_browser_selector(e) {
   };
   lt.event.special[t] = {
    setup: function() {
-    0 === n++ && X.addEventListener(e, i, !0);
+    0 === n++ && V.addEventListener(e, i, !0);
    },
    teardown: function() {
-    0 === --n && X.removeEventListener(e, i, !0);
+    0 === --n && V.removeEventListener(e, i, !0);
    }
   };
  }), lt.fn.extend({
@@ -2048,7 +2056,7 @@ function css_browser_selector(e) {
    return w(e.replace(st, "$1"), t, n, i);
   }
   function a(e, t) {
-   var n = t && e, i = n && (~t.sourceIndex || X) - (~e.sourceIndex || X);
+   var n = t && e, i = n && (~t.sourceIndex || V) - (~e.sourceIndex || V);
    if (i) return i;
    if (n) for (;n = n.nextSibling; ) if (n === t) return -1;
    return e ? 1 : -1;
@@ -2195,7 +2203,7 @@ function css_browser_selector(e) {
    return E(e, c)(i, t, R, n, ft.test(e)), n;
   }
   function x() {}
-  var C, k, S, T, _, E, P, I, $, z, N, R, L, A, O, M, D, j = "sizzle" + -new Date(), H = e.document, F = {}, B = 0, W = 0, q = i(), G = i(), U = i(), V = typeof t, X = 1 << 31, Y = [], K = Y.pop, J = Y.push, Q = Y.slice, Z = Y.indexOf || function(e) {
+  var C, k, S, T, _, E, P, I, $, z, N, R, L, A, O, M, D, j = "sizzle" + -new Date(), H = e.document, F = {}, B = 0, W = 0, q = i(), G = i(), U = i(), X = typeof t, V = 1 << 31, Y = [], K = Y.pop, J = Y.push, Q = Y.slice, Z = Y.indexOf || function(e) {
    for (var t = 0, n = this.length; n > t; t++) if (this[t] === e) return t;
    return -1;
   }, et = "[\\x20\\t\\r\\n\\f]", tt = "(?:\\\\.|[\\w-]|[^\\x00-\\xa0])+", nt = tt.replace("w", "w#"), it = "([*^$|!~]?=)", ot = "\\[" + et + "*(" + tt + ")" + et + "*(?:" + it + et + "*(?:(['\"])((?:\\\\.|[^\\\\])*?)\\3|(" + nt + ")|)|)" + et + "*\\]", rt = ":(" + tt + ")(?:\\(((['\"])((?:\\\\.|[^\\\\])*?)\\3|((?:\\\\.|[^\\\\()[\\]]|" + ot.replace(3, 8) + ")*)|.*)\\)|)", st = RegExp("^" + et + "+|((?:^|[^\\\\])(?:\\\\.)*)" + et + "+$", "g"), at = RegExp("^" + et + "*," + et + "*"), ct = RegExp("^" + et + "*([\\x20\\t\\r\\n\\f>+~])" + et + "*"), ut = RegExp(rt), dt = RegExp("^" + nt + "$"), pt = {
@@ -2240,7 +2248,7 @@ function css_browser_selector(e) {
     var t = i.getElementsByName && i.getElementsByName(j).length === 2 + i.getElementsByName(j + 0).length;
     return F.getIdNotName = !i.getElementById(j), N.removeChild(e), t;
    }), S.attrHandle = r(function(e) {
-    return e.innerHTML = "<a href='#'></a>", e.firstChild && typeof e.firstChild.getAttribute !== V && "#" === e.firstChild.getAttribute("href");
+    return e.innerHTML = "<a href='#'></a>", e.firstChild && typeof e.firstChild.getAttribute !== X && "#" === e.firstChild.getAttribute("href");
    }) ? {} : {
     href: function(e) {
      return e.getAttribute("href", 2);
@@ -2249,7 +2257,7 @@ function css_browser_selector(e) {
      return e.getAttribute("type");
     }
    }, F.getIdNotName ? (S.find.ID = function(e, t) {
-    if (typeof t.getElementById !== V && !R) {
+    if (typeof t.getElementById !== X && !R) {
      var n = t.getElementById(e);
      return n && n.parentNode ? [ n ] : [];
     }
@@ -2259,18 +2267,18 @@ function css_browser_selector(e) {
      return e.getAttribute("id") === t;
     };
    }) : (S.find.ID = function(e, n) {
-    if (typeof n.getElementById !== V && !R) {
+    if (typeof n.getElementById !== X && !R) {
      var i = n.getElementById(e);
-     return i ? i.id === e || typeof i.getAttributeNode !== V && i.getAttributeNode("id").value === e ? [ i ] : t : [];
+     return i ? i.id === e || typeof i.getAttributeNode !== X && i.getAttributeNode("id").value === e ? [ i ] : t : [];
     }
    }, S.filter.ID = function(e) {
     var t = e.replace(wt, xt);
     return function(e) {
-     var n = typeof e.getAttributeNode !== V && e.getAttributeNode("id");
+     var n = typeof e.getAttributeNode !== X && e.getAttributeNode("id");
      return n && n.value === t;
     };
    }), S.find.TAG = F.tagNameNoComments ? function(e, n) {
-    return typeof n.getElementsByTagName !== V ? n.getElementsByTagName(e) : t;
+    return typeof n.getElementsByTagName !== X ? n.getElementsByTagName(e) : t;
    } : function(e, t) {
     var n, i = [], o = 0, r = t.getElementsByTagName(e);
     if ("*" === e) {
@@ -2279,9 +2287,9 @@ function css_browser_selector(e) {
     }
     return r;
    }, S.find.NAME = F.getByName && function(e, n) {
-    return typeof n.getElementsByName !== V ? n.getElementsByName(name) : t;
+    return typeof n.getElementsByName !== X ? n.getElementsByName(name) : t;
    }, S.find.CLASS = F.getByClassName && function(e, n) {
-    return typeof n.getElementsByClassName === V || R ? t : n.getElementsByClassName(e);
+    return typeof n.getElementsByClassName === X || R ? t : n.getElementsByClassName(e);
    }, A = [], L = [ ":focus" ], (F.qsa = n(i.querySelectorAll)) && (r(function(e) {
     e.innerHTML = "<select><option selected=''></option></select>", e.querySelectorAll("[selected]").length || L.push("\\[" + et + "*(?:checked|disabled|ismap|multiple|readonly|selected|value)"), 
     e.querySelectorAll(":checked").length || L.push(":checked");
@@ -2389,7 +2397,7 @@ function css_browser_selector(e) {
     CLASS: function(e) {
      var t = q[e + " "];
      return t || (t = RegExp("(^|" + et + ")" + e + "(" + et + "|$)")) && q(e, function(e) {
-      return t.test(e.className || typeof e.getAttribute !== V && e.getAttribute("class") || "");
+      return t.test(e.className || typeof e.getAttribute !== X && e.getAttribute("class") || "");
      });
     },
     ATTR: function(e, t, n) {
@@ -2664,7 +2672,7 @@ function css_browser_selector(e) {
    return n;
   }
  });
- var Ut = "abbr|article|aside|audio|bdi|canvas|data|datalist|details|figcaption|figure|footer|header|hgroup|mark|meter|nav|output|progress|section|summary|time|video", Vt = / jQuery\d+="(?:null|\d+)"/g, Xt = RegExp("<(?:" + Ut + ")[\\s/>]", "i"), Yt = /^\s+/, Kt = /<(?!area|br|col|embed|hr|img|input|link|meta|param)(([\w:]+)[^>]*)\/>/gi, Jt = /<([\w:]+)/, Qt = /<tbody/i, Zt = /<|&#?\w+;/, en = /<(?:script|style|link)/i, tn = /^(?:checkbox|radio)$/i, nn = /checked\s*(?:[^=]|=\s*.checked.)/i, on = /^$|\/(?:java|ecma)script/i, rn = /^true\/(.*)/, sn = /^\s*<!(?:\[CDATA\[|--)|(?:\]\]|--)>\s*$/g, an = {
+ var Ut = "abbr|article|aside|audio|bdi|canvas|data|datalist|details|figcaption|figure|footer|header|hgroup|mark|meter|nav|output|progress|section|summary|time|video", Xt = / jQuery\d+="(?:null|\d+)"/g, Vt = RegExp("<(?:" + Ut + ")[\\s/>]", "i"), Yt = /^\s+/, Kt = /<(?!area|br|col|embed|hr|img|input|link|meta|param)(([\w:]+)[^>]*)\/>/gi, Jt = /<([\w:]+)/, Qt = /<tbody/i, Zt = /<|&#?\w+;/, en = /<(?:script|style|link)/i, tn = /^(?:checkbox|radio)$/i, nn = /checked\s*(?:[^=]|=\s*.checked.)/i, on = /^$|\/(?:java|ecma)script/i, rn = /^true\/(.*)/, sn = /^\s*<!(?:\[CDATA\[|--)|(?:\]\]|--)>\s*$/g, an = {
   option: [ 1, "<select multiple='multiple'>", "</select>" ],
   legend: [ 1, "<fieldset>", "</fieldset>" ],
   area: [ 1, "<map>", "</map>" ],
@@ -2674,12 +2682,12 @@ function css_browser_selector(e) {
   col: [ 2, "<table><tbody></tbody><colgroup>", "</colgroup></table>" ],
   td: [ 3, "<table><tbody><tr>", "</tr></tbody></table>" ],
   _default: lt.support.htmlSerialize ? [ 0, "", "" ] : [ 1, "X<div>", "</div>" ]
- }, ln = p(X), cn = ln.appendChild(X.createElement("div"));
+ }, ln = p(V), cn = ln.appendChild(V.createElement("div"));
  an.optgroup = an.option, an.tbody = an.tfoot = an.colgroup = an.caption = an.thead, 
  an.th = an.td, lt.fn.extend({
   text: function(e) {
    return lt.access(this, function(e) {
-    return e === t ? lt.text(this) : this.empty().append((this[0] && this[0].ownerDocument || X).createTextNode(e));
+    return e === t ? lt.text(this) : this.empty().append((this[0] && this[0].ownerDocument || V).createTextNode(e));
    }, null, e, arguments.length);
   },
   wrapAll: function(e) {
@@ -2754,8 +2762,8 @@ function css_browser_selector(e) {
   html: function(e) {
    return lt.access(this, function(e) {
     var n = this[0] || {}, i = 0, o = this.length;
-    if (e === t) return 1 === n.nodeType ? n.innerHTML.replace(Vt, "") : t;
-    if (!("string" != typeof e || en.test(e) || !lt.support.htmlSerialize && Xt.test(e) || !lt.support.leadingWhitespace && Yt.test(e) || an[(Jt.exec(e) || [ "", "" ])[1].toLowerCase()])) {
+    if (e === t) return 1 === n.nodeType ? n.innerHTML.replace(Xt, "") : t;
+    if (!("string" != typeof e || en.test(e) || !lt.support.htmlSerialize && Vt.test(e) || !lt.support.leadingWhitespace && Yt.test(e) || an[(Jt.exec(e) || [ "", "" ])[1].toLowerCase()])) {
      e = e.replace(Kt, "<$1></$2>");
      try {
       for (;o > i; i++) n = this[i] || {}, 1 === n.nodeType && (lt.cleanData(b(n, !1)), 
@@ -2815,7 +2823,7 @@ function css_browser_selector(e) {
  }), lt.extend({
   clone: function(e, t, n) {
    var i, o, r, s, a, l = lt.contains(e.ownerDocument, e);
-   if (lt.support.html5Clone || lt.isXMLDoc(e) || !Xt.test("<" + e.nodeName + ">") ? r = e.cloneNode(!0) : (cn.innerHTML = e.outerHTML, 
+   if (lt.support.html5Clone || lt.isXMLDoc(e) || !Vt.test("<" + e.nodeName + ">") ? r = e.cloneNode(!0) : (cn.innerHTML = e.outerHTML, 
    cn.removeChild(r = cn.firstChild)), !(lt.support.noCloneEvent && lt.support.noCloneChecked || 1 !== e.nodeType && 11 !== e.nodeType || lt.isXMLDoc(e))) for (i = b(r), 
    a = b(e), s = 0; null != (o = a[s]); ++s) i[s] && y(o, i[s]);
    if (t) if (n) for (a = a || b(e), i = i || b(r), s = 0; null != (o = a[s]); s++) v(o, i[s]); else v(e, r);
@@ -2843,7 +2851,7 @@ function css_browser_selector(e) {
    for (var n, i, o, r, s = 0, a = lt.expando, l = lt.cache, c = lt.support.deleteExpando, u = lt.event.special; null != (n = e[s]); s++) if ((t || lt.acceptData(n)) && (o = n[a], 
    r = o && l[o])) {
     if (r.events) for (i in r.events) u[i] ? lt.event.remove(n, i) : lt.removeEvent(n, i, r.handle);
-    l[o] && (delete l[o], c ? delete n[a] : typeof n.removeAttribute !== V ? n.removeAttribute(a) : n[a] = null, 
+    l[o] && (delete l[o], c ? delete n[a] : typeof n.removeAttribute !== X ? n.removeAttribute(a) : n[a] = null, 
     Z.push(o));
    }
   }
@@ -2939,7 +2947,7 @@ function css_browser_selector(e) {
   return a && ("" !== l || lt.contains(e.ownerDocument, e) || (l = lt.style(e, n)), 
   bn.test(l) && vn.test(n) && (o = c.width, r = c.minWidth, s = c.maxWidth, c.minWidth = c.maxWidth = c.width = l, 
   l = a.width, c.width = o, c.minWidth = r, c.maxWidth = s)), l;
- }) : X.documentElement.currentStyle && (dn = function(e) {
+ }) : V.documentElement.currentStyle && (dn = function(e) {
   return e.currentStyle;
  }, pn = function(e, n, i) {
   var o, r, s, a = i || dn(e), l = a ? a[n] : t, c = e.style;
@@ -3041,7 +3049,7 @@ function css_browser_selector(e) {
  try {
   Nn = Y.href;
  } catch (Un) {
-  Nn = X.createElement("a"), Nn.href = "", Nn = Nn.href;
+  Nn = V.createElement("a"), Nn.href = "", Nn = Nn.href;
  }
  zn = Fn.exec(Nn.toLowerCase()) || [], lt.fn.load = function(e, n, i) {
   if ("string" != typeof e && Bn) return Bn.apply(this, arguments);
@@ -3212,10 +3220,10 @@ function css_browser_selector(e) {
   e.cache === t && (e.cache = !1), e.crossDomain && (e.type = "GET", e.global = !1);
  }), lt.ajaxTransport("script", function(e) {
   if (e.crossDomain) {
-   var n, i = X.head || lt("head")[0] || X.documentElement;
+   var n, i = V.head || lt("head")[0] || V.documentElement;
    return {
     send: function(t, o) {
-     n = X.createElement("script"), n.async = !0, e.scriptCharset && (n.charset = e.scriptCharset), 
+     n = V.createElement("script"), n.async = !0, e.scriptCharset && (n.charset = e.scriptCharset), 
      n.src = e.url, n.onload = n.onreadystatechange = function(e, t) {
       (t || !n.readyState || /loaded|complete/.test(n.readyState)) && (n.onload = n.onreadystatechange = null, 
       n.parentNode && n.parentNode.removeChild(n), n = null, t || o(200, "success"));
@@ -3227,23 +3235,23 @@ function css_browser_selector(e) {
    };
   }
  });
- var Vn = [], Xn = /(=)\?(?=&|$)|\?\?/;
+ var Xn = [], Vn = /(=)\?(?=&|$)|\?\?/;
  lt.ajaxSetup({
   jsonp: "callback",
   jsonpCallback: function() {
-   var e = Vn.pop() || lt.expando + "_" + Rn++;
+   var e = Xn.pop() || lt.expando + "_" + Rn++;
    return this[e] = !0, e;
   }
  }), lt.ajaxPrefilter("json jsonp", function(n, i, o) {
-  var r, s, a, l = n.jsonp !== !1 && (Xn.test(n.url) ? "url" : "string" == typeof n.data && !(n.contentType || "").indexOf("application/x-www-form-urlencoded") && Xn.test(n.data) && "data");
+  var r, s, a, l = n.jsonp !== !1 && (Vn.test(n.url) ? "url" : "string" == typeof n.data && !(n.contentType || "").indexOf("application/x-www-form-urlencoded") && Vn.test(n.data) && "data");
   return l || "jsonp" === n.dataTypes[0] ? (r = n.jsonpCallback = lt.isFunction(n.jsonpCallback) ? n.jsonpCallback() : n.jsonpCallback, 
-  l ? n[l] = n[l].replace(Xn, "$1" + r) : n.jsonp !== !1 && (n.url += (Ln.test(n.url) ? "&" : "?") + n.jsonp + "=" + r), 
+  l ? n[l] = n[l].replace(Vn, "$1" + r) : n.jsonp !== !1 && (n.url += (Ln.test(n.url) ? "&" : "?") + n.jsonp + "=" + r), 
   n.converters["script json"] = function() {
    return a || lt.error(r + " was not called"), a[0];
   }, n.dataTypes[0] = "json", s = e[r], e[r] = function() {
    a = arguments;
   }, o.always(function() {
-   e[r] = s, n[r] && (n.jsonpCallback = i.jsonpCallback, Vn.push(r)), a && lt.isFunction(s) && s(a[0]), 
+   e[r] = s, n[r] && (n.jsonpCallback = i.jsonpCallback, Xn.push(r)), a && lt.isFunction(s) && s(a[0]), 
    a = s = t;
   }), "script") : t;
  });
@@ -3448,7 +3456,7 @@ function css_browser_selector(e) {
    top: 0,
    left: 0
   }, r = this[0], s = r && r.ownerDocument;
-  if (s) return n = s.documentElement, lt.contains(n, r) ? (typeof r.getBoundingClientRect !== V && (o = r.getBoundingClientRect()), 
+  if (s) return n = s.documentElement, lt.contains(n, r) ? (typeof r.getBoundingClientRect !== X && (o = r.getBoundingClientRect()), 
   i = q(s), {
    top: o.top + (i.pageYOffset || n.scrollTop) - (n.clientTop || 0),
    left: o.left + (i.pageXOffset || n.scrollLeft) - (n.clientLeft || 0)
@@ -3479,8 +3487,8 @@ function css_browser_selector(e) {
   },
   offsetParent: function() {
    return this.map(function() {
-    for (var e = this.offsetParent || X.documentElement; e && !lt.nodeName(e, "html") && "static" === lt.css(e, "position"); ) e = e.offsetParent;
-    return e || X.documentElement;
+    for (var e = this.offsetParent || V.documentElement; e && !lt.nodeName(e, "html") && "static" === lt.css(e, "position"); ) e = e.offsetParent;
+    return e || V.documentElement;
    });
   }
  }), lt.each({
@@ -4611,6 +4619,7 @@ define("config", function() {}), define("settings", [ "underscore", "config" ],
   "Pagedown-extra": "https://github.com/jmcmanus/pagedown-extra/",
   Prettify: "https://code.google.com/p/google-code-prettify/",
   RequireJS: "http://requirejs.org/",
+  "stacktrace.js": "http://stacktracejs.com/",
   "UI Layout": "http://layout.jquery-dev.net/",
   "Underscore.js": "http://underscorejs.org/",
   waitForImages: "https://github.com/alexanderdickson/waitForImages"
@@ -12040,7 +12049,159 @@ function(e) {
    c.selectFile(e);
   });
  }), r.onFileMgrCreated(c), c;
-}), define("asyncRunner", [ "underscore", "core", "utils", "extensionMgr" ], function(e, t, n, i) {
+}), "undefined" != typeof module && module.exports && (module.exports = printStackTrace), 
+printStackTrace.implementation = function() {}, printStackTrace.implementation.prototype = {
+ run: function(e, t) {
+  return e = e || this.createException(), t = t || this.mode(e), "other" === t ? this.other(arguments.callee) : this[t](e);
+ },
+ createException: function() {
+  try {
+   this.undef();
+  } catch (e) {
+   return e;
+  }
+ },
+ mode: function(e) {
+  return e.arguments && e.stack ? "chrome" : e.stack && e.sourceURL ? "safari" : e.stack && e.number ? "ie" : "string" == typeof e.message && "undefined" != typeof window && window.opera ? e.stacktrace ? e.message.indexOf("\n") > -1 && e.message.split("\n").length > e.stacktrace.split("\n").length ? "opera9" : e.stack ? 0 > e.stacktrace.indexOf("called from line") ? "opera10b" : "opera11" : "opera10a" : "opera9" : e.stack ? "firefox" : "other";
+ },
+ instrumentFunction: function(e, t, n) {
+  e = e || window;
+  var i = e[t];
+  e[t] = function() {
+   return n.call(this, printStackTrace().slice(4)), e[t]._instrumented.apply(this, arguments);
+  }, e[t]._instrumented = i;
+ },
+ deinstrumentFunction: function(e, t) {
+  e[t].constructor === Function && e[t]._instrumented && e[t]._instrumented.constructor === Function && (e[t] = e[t]._instrumented);
+ },
+ chrome: function(e) {
+  var t = (e.stack + "\n").replace(/^\S[^\(]+?[\n$]/gm, "").replace(/^\s+(at eval )?at\s+/gm, "").replace(/^([^\(]+?)([\n$])/gm, "{anonymous}()@$1$2").replace(/^Object.<anonymous>\s*\(([^\)]+)\)/gm, "{anonymous}()@$1").split("\n");
+  return t.pop(), t;
+ },
+ safari: function(e) {
+  return e.stack.replace(/\[native code\]\n/m, "").replace(/^(?=\w+Error\:).*$\n/m, "").replace(/^@/gm, "{anonymous}()@").split("\n");
+ },
+ ie: function(e) {
+  var t = /^.*at (\w+) \(([^\)]+)\)$/gm;
+  return e.stack.replace(/at Anonymous function /gm, "{anonymous}()@").replace(/^(?=\w+Error\:).*$\n/m, "").replace(t, "$1@$2").split("\n");
+ },
+ firefox: function(e) {
+  return e.stack.replace(/(?:\n@:0)?\s+$/m, "").replace(/^[\(@]/gm, "{anonymous}()@").split("\n");
+ },
+ opera11: function(e) {
+  for (var t = "{anonymous}", n = /^.*line (\d+), column (\d+)(?: in (.+))? in (\S+):$/, i = e.stacktrace.split("\n"), o = [], r = 0, s = i.length; s > r; r += 2) {
+   var a = n.exec(i[r]);
+   if (a) {
+    var l = a[4] + ":" + a[1] + ":" + a[2], c = a[3] || "global code";
+    c = c.replace(/<anonymous function: (\S+)>/, "$1").replace(/<anonymous function>/, t), 
+    o.push(c + "@" + l + " -- " + i[r + 1].replace(/^\s+/, ""));
+   }
+  }
+  return o;
+ },
+ opera10b: function(e) {
+  for (var t = /^(.*)@(.+):(\d+)$/, n = e.stacktrace.split("\n"), i = [], o = 0, r = n.length; r > o; o++) {
+   var s = t.exec(n[o]);
+   if (s) {
+    var a = s[1] ? s[1] + "()" : "global code";
+    i.push(a + "@" + s[2] + ":" + s[3]);
+   }
+  }
+  return i;
+ },
+ opera10a: function(e) {
+  for (var t = "{anonymous}", n = /Line (\d+).*script (?:in )?(\S+)(?:: In function (\S+))?$/i, i = e.stacktrace.split("\n"), o = [], r = 0, s = i.length; s > r; r += 2) {
+   var a = n.exec(i[r]);
+   if (a) {
+    var l = a[3] || t;
+    o.push(l + "()@" + a[2] + ":" + a[1] + " -- " + i[r + 1].replace(/^\s+/, ""));
+   }
+  }
+  return o;
+ },
+ opera9: function(e) {
+  for (var t = "{anonymous}", n = /Line (\d+).*script (?:in )?(\S+)/i, i = e.message.split("\n"), o = [], r = 2, s = i.length; s > r; r += 2) {
+   var a = n.exec(i[r]);
+   a && o.push(t + "()@" + a[2] + ":" + a[1] + " -- " + i[r + 1].replace(/^\s+/, ""));
+  }
+  return o;
+ },
+ other: function(e) {
+  for (var t, n, i = "{anonymous}", o = /function\s*([\w\-$]+)?\s*\(/i, r = [], s = 10; e && e.arguments && s > r.length; ) t = o.test("" + e) ? RegExp.$1 || i : i, 
+  n = Array.prototype.slice.call(e.arguments || []), r[r.length] = t + "(" + this.stringifyArguments(n) + ")", 
+  e = e.caller;
+  return r;
+ },
+ stringifyArguments: function(e) {
+  for (var t = [], n = Array.prototype.slice, i = 0; e.length > i; ++i) {
+   var o = e[i];
+   void 0 === o ? t[i] = "undefined" : null === o ? t[i] = "null" : o.constructor && (o.constructor === Array ? t[i] = 3 > o.length ? "[" + this.stringifyArguments(o) + "]" : "[" + this.stringifyArguments(n.call(o, 0, 1)) + "..." + this.stringifyArguments(n.call(o, -1)) + "]" : o.constructor === Object ? t[i] = "#object" : o.constructor === Function ? t[i] = "#function" : o.constructor === String ? t[i] = '"' + o + '"' : o.constructor === Number && (t[i] = o));
+  }
+  return t.join(",");
+ },
+ sourceCache: {},
+ ajax: function(e) {
+  var t = this.createXMLHTTPObject();
+  if (t) try {
+   return t.open("GET", e, !1), t.send(null), t.responseText;
+  } catch (n) {}
+  return "";
+ },
+ createXMLHTTPObject: function() {
+  for (var e, t = [ function() {
+   return new XMLHttpRequest();
+  }, function() {
+   return new ActiveXObject("Msxml2.XMLHTTP");
+  }, function() {
+   return new ActiveXObject("Msxml3.XMLHTTP");
+  }, function() {
+   return new ActiveXObject("Microsoft.XMLHTTP");
+  } ], n = 0; t.length > n; n++) try {
+   return e = t[n](), this.createXMLHTTPObject = t[n], e;
+  } catch (i) {}
+ },
+ isSameDomain: function(e) {
+  return "undefined" != typeof location && -1 !== e.indexOf(location.hostname);
+ },
+ getSource: function(e) {
+  return e in this.sourceCache || (this.sourceCache[e] = this.ajax(e).split("\n")), 
+  this.sourceCache[e];
+ },
+ guessAnonymousFunctions: function(e) {
+  for (var t = 0; e.length > t; ++t) {
+   var n = /\{anonymous\}\(.*\)@(.*)/, i = /^(.*?)(?::(\d+))(?::(\d+))?(?: -- .+)?$/, o = e[t], r = n.exec(o);
+   if (r) {
+    var s = i.exec(r[1]);
+    if (s) {
+     var a = s[1], l = s[2], c = s[3] || 0;
+     if (a && this.isSameDomain(a) && l) {
+      var u = this.guessAnonymousFunction(a, l, c);
+      e[t] = o.replace("{anonymous}", u);
+     }
+    }
+   }
+  }
+  return e;
+ },
+ guessAnonymousFunction: function(e, t) {
+  var n;
+  try {
+   n = this.findFunctionName(this.getSource(e), t);
+  } catch (i) {
+   n = "getSource failed with url: " + e + ", exception: " + ("" + i);
+  }
+  return n;
+ },
+ findFunctionName: function(e, t) {
+  for (var n, i, o, r = /function\s+([^(]*?)\s*\(([^)]*)\)/, s = /['"]?([$_A-Za-z][$_A-Za-z0-9]*)['"]?\s*[:=]\s*function\b/, a = /['"]?([$_A-Za-z][$_A-Za-z0-9]*)['"]?\s*[:=]\s*(?:eval|new Function)\b/, l = "", c = Math.min(t, 20), u = 0; c > u; ++u) if (n = e[t - u - 1], 
+  o = n.indexOf("//"), o >= 0 && (n = n.substr(0, o)), n) {
+   if (l = n + l, i = s.exec(l), i && i[1]) return i[1];
+   if (i = r.exec(l), i && i[1]) return i[1];
+   if (i = a.exec(l), i && i[1]) return i[1];
+  }
+  return "(?)";
+ }
+}, define("libs/stacktrace", function() {}), define("asyncRunner", [ "underscore", "core", "utils", "extensionMgr", "libs/stacktrace" ], function(e, t, n, i) {
  function o(t, n, o) {
   try {
    e.each(n, function(e) {
@@ -12054,14 +12215,14 @@ function(e) {
  return r.createTask = function() {
   var e = {};
   return e.finished = !1, e.timeout = ASYNC_TASK_DEFAULT_TIMEOUT, e.retryCounter = 0, 
-  e.runCallbacks = [], e.onRun = function(t) {
+  e.callPath = [], e.runCallbacks = [], e.onRun = function(t) {
    e.runCallbacks.push(t);
   }, e.successCallbacks = [], e.onSuccess = function(t) {
    e.successCallbacks.push(t);
   }, e.errorCallbacks = [], e.onError = function(t) {
    e.errorCallbacks.push(t);
   }, e.chain = function(t) {
-   if (e.finished !== !0) {
+   if (e.callPath.push(printStackTrace()[5]), e.finished !== !0) {
     if (void 0 === e.queue && (e.queue = e.runCallbacks.slice()), void 0 !== t) return t(), 
     void 0;
     if (0 === e.queue.length) return o(e, e.successCallbacks), void 0;
@@ -12069,18 +12230,18 @@ function(e) {
     n();
    }
   }, e.error = function(t) {
-   if (e.finished !== !0) throw t = t || Error("Unknown error"), t.message && i.onError(t), 
-   o(e, e.errorCallbacks, t), t;
+   if (e.callPath.push(printStackTrace()[5]), e.finished !== !0) throw t = t || Error("Unknown error|\n" + e.callPath.join("\n")), 
+   t.message && i.onError(t), o(e, e.errorCallbacks, t), t;
   }, e.retry = function(t, i) {
    if (e.finished !== !0) {
     if (i = i || 5, e.queue = void 0, e.retryCounter >= i) return e.error(t), void 0;
     var o = 1e3 * Math.pow(2, e.retryCounter++);
-    u = n.currentTime + o, c = !1, r.runTask();
+    u = n.currentTime + o, c = !1, e.callPath = [], r.runTask();
    }
   }, e;
  }, r.runTask = function() {
   e.defer(function() {
-   if (c === !0) return u + l.timeout < n.currentTime && l.error(Error("A timeout occurred.")), 
+   if (c === !0) return u + l.timeout < n.currentTime && l.error(Error("A timeout occurred.|\n" + l.callPath.join("\n"))), 
    void 0;
    if (void 0 === l) {
     if (0 === s.length) return;