// 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.');
                                    }
                                  };
    }
}