rem: try 
add: try 
context:         this.context.delay(function()        {            try             {                 this.mutateNode(target, parent, nextSibling, removal);            }            catch (exc)            {                FBTrace.dumpProperties("html.onMutateNode FAILS:", exc);            }        }, this);
meta: 7450	/local1/tlutelli/issta_data/temp/all_js/javascript/2007_temp/2007/7450/e1d42ad3fad63b72826a4e2ed0726866484c9ac3/html.js/buggy/extension/content/firebug/html.js