--- ./js/src/xpconnect/src/nsScriptError.cpp	2008-12-03 20:54:51.000000000 +0800
+++ ./js/src/xpconnect/src/nsScriptError.cpp.patched	2008-12-25 13:46:36.000000000 +0800
@@ -42,6 +42,9 @@
	 * place to put XPCOM things.
	 */
	
+	// added by agentzh
+	#include "string.h"
+	#include "nsString.h"
	#include "xpcprivate.h"
	
	NS_IMPL_THREADSAFE_ISUPPORTS2(nsScriptError, nsIConsoleMessage, nsIScriptError)
@@ -128,6 +131,8 @@
	                    PRUint32 flags,
	                    const char *category)
	{
+	    const char* buf;
+	
	    mMessage.Assign(message);
	    mSourceName.Assign(sourceName);
	    mLineNumber = lineNumber;
@@ -136,6 +141,20 @@
	    mFlags = flags;
	    mCategory.Assign(category);
	
+	    // added by agentzh
+	    if (flags == 0) { // errors only
+	        buf = NS_ConvertUTF16toUTF8(sourceName).get();
+	        if (strstr(buf, "nsUpdateService.js") == NULL && strstr(buf, "nsSessionStore.js") == NULL) {
+	            fprintf(
+	                stderr,
+	                "[error] ErrorConsole: %s: line %d: %s\n",
+	                buf,
+	                lineNumber,
+	                NS_ConvertUTF16toUTF8(message).get()
+	            );
+	        }
+	    }
+	
	    return NS_OK;
	}