    inspectNodeBy: function(dir)    {        var target;        var node = this.inspectingNode;                if (dir == "up")            target = this.inspectingContext.chrome.getNextObject();        else if (dir == "down")        {            target = this.inspectingContext.chrome.getNextObject(true);            if (node && !target)            {                if (node.contentDocument)                    target = node.contentDocument.documentElement;                else                    target = getNextElement(node.firstChild);            }        }                if (target && isElement(target))            this.inspectNode(target);        else            beep();    },
2454	/local1/tlutelli/issta_data/temp/all_js/javascript/2007_temp/2007/2454/e1d42ad3fad63b72826a4e2ed0726866484c9ac3/inspector.js/clean/extension/content/firebug/inspector.js