code: function ErrorStackParser$$parseOpera11(error) {
  	            var filtered = _filter(error.stack.split('\n'), function (line) {
  	                return !!line.match(FIREFOX_SAFARI_STACK_REGEXP) &&
  	                    !line.match(/^Error created at/);
  	            }, this);
  	
  	            return _map(filtered, function (line) {
  	                var tokens = line.split('@');
  	                var locationParts = this.extractLocation(tokens.pop());
  	                var functionCall = (tokens.shift() || '');
  	                var functionName = functionCall
  	                        .replace(/<anonymous function(: (\w+))?>/, '$2')
  	                        .replace(/\([^\)]*\)/g, '') || undefined;
  	                var argsRaw;
  	                if (functionCall.match(/\(([^\)]*)\)/)) {
  	                    argsRaw = functionCall.replace(/^[^\(]+\(([^\)]*)\)$/, '$1');
  	                }
  	                var args = (argsRaw === undefined || argsRaw === '[arguments not available]') ? undefined : argsRaw.split(',');
  	                return new StackFrame(functionName, args, locationParts[0], locationParts[1], locationParts[2], line);
  	            }, this);
  	        }
docs: Opera 10.65+ Error.stack very similar to FF/Safari