if (statusBar) 
if (statusText && statusBar && Firebug.breakOnErrors && error.message &&  !(error.flags & nsIScriptError.WARNING_FLAG)) { statusText.setAttribute("value", error.message); 
    showMessageOnStatusBar: function(error)    {        if (statusBar)            statusBar.setAttribute("errors", "true");        if (statusText && Firebug.breakOnErrors &&  !(error.flags & nsIScriptError.WARNING_FLAG))  // sometimes this is undefined..how?            statusText.setAttribute("value", error.message);        else            statusText.setAttribute("value", "");    },
2454	/local1/tlutelli/issta_data/temp/all_js/javascript/2007_temp/2007/2454/eabfd5012ce56617f4f8c5fdee1ff9ca7c7719de/errors.js/clean/extension/content/firebug/errors.js