// recreates some things to make scripts with firebug debugging functions   
// work in other browsers (especially Opera)   
// (just a quick'n'dirty drop-in approach; could perhaps be used as a user javascript)   
if (!window.console || !window.console.firebug) {   
    var names = ["dir", "dirxml", "group", "groupEnd", "trace", "profile", "profileEnd"];   
    var logFx = ["log", "debug", "info", "warn", "error"];   
    window.console = {};   
    // no more javascript errors in non-firefox browsers   
    for (i in names) {   
        window.console[names[i]] = function() {};   
    }   
    for (i in logFx) {   
        if (window.opera) {   
            // simple replacement of the console.log() etc methods of firebug   
            window.console[logFx[i]] = (function (logtype) {   
                                            // using scope to remember the instances of the local variables   
                                            // save function name for later use (logtype === logFx[i])   
                                            // see http://www.howtocreate.co.uk/referencedvariables.html   
                                            return function() {   
                                                if (typeof arguments === "undefined") { // no arguments at all   
                                                    return null;   
                                                }   
                                                if (arguments.length === 1) { // single argument provided   
                                                    opera.postError(logtype+': '+arguments[0]);   
                                                    return logtype+': '+arguments[0];   
                                                }   
                                                var string = arguments[0];   
                                                var regexp = new RegExp(/%([sdifo])/g); // string substitution patterns of firebug console   
                                                var count = 0;   
                                                var match = null;   
                                                // replace found matches with given arguments   
                                                while (match = regexp.exec(string)) {   
                                                    string = string.replace(match[0], String(arguments[++count]));   
                                                }   
                                                // display log messages   
                                                var len = arguments.length;   
                                                while (len > count++) {   
                                                    if (arguments[count]) {   
                                                        string += ' ';   
                                                        string += String(arguments[count]);   
                                                    }   
                                                }   
                                                opera.postError(logtype+': '+string);   
                                            };   
                                        })(logFx[i]);   
        } else {   
            window.console[logFx[i]] = function() {};   
        }   
    }   
    if (window.opera) {   
        // most simple assertion method with parameters: fn(expected, message)   
        window.console['assert'] = function() {   
                                        if (arguments.length !== 2) {   
                                            throw new Exception('Please specify an assertion and a message.');   
                                        }   
                                        if (!arguments[0]) {   
                                            opera.postError('Assertion failed: '+arguments[1]);   
                                        }   
                                    }   
        // not a good exchange for the firebug version, as this is dependant of   
        // the used counter name and displays a log message for every execution   
        window.console['count'] = function(arg) {   
                                    var title = arg || 'defaultCounter';   
                                    if (!window.opera['FireBugEquivalent']) {   
                                        window.opera['FireBugEquivalent'] = [];   
                                    }   
                                    if (!window.opera['FireBugEquivalent'][title]) {   
                                        window.opera['FireBugEquivalent'][title] = 0;   
                                    }   
                                    window.opera['FireBugEquivalent'][title] = window.opera['FireBugEquivalent'][title]+1;   
                                    opera.postError('Counter "'+title+'" '+window.opera['FireBugEquivalent'][title]+'x called.');   
                                  };   
        // start a timer specified by a name   
        window.console['time'] = function(arg) {   
                                    var timerName = arg || 'defaultTimer';   
                                    if (!window.opera['FireBugEquivalent']) {   
                                        window.opera['FireBugEquivalent'] = [];   
                                    }   
                                    window.opera['FireBugEquivalent'][timerName] = new Date().getTime();   
                                  };   
        // stops a timer specified by name   
        window.console['timeEnd'] = function(arg) {   
                                    var timerName = arg || 'default';   
                                    if (window.opera['FireBugEquivalent']) {   
                                        var startTime = window.opera['FireBugEquivalent'][timerName];   
                                        if (startTime) {   
                                            var stopTime = new Date().getTime();   
                                            var elapsed = (stopTime - startTime);   
                                            opera.postError('Timer "'+timerName+'" took '+elapsed+' millisecond'+((elapsed==1)?'':'s'));   
                                            delete window.opera['FireBugTimerEquivalent'][timerName];   
                                        } else { // no start timer found   
                                            opera.postError('No start timer defined - check timer name or call console.time("timerName").');   
                                        }   
                                    } else { // no timers at all   
                                        opera.postError('No previously stored timers found.');   
                                    }   
                                  };   
    }   
}