Thanks denro for your explanations. I cannot be sure of Script Blocking behavior into Firebird. Anyway, as a part of Mozilla suite, seems to work with it.
avast! team must say something about...
For script security, I strongly suggest you take a look at:
WSH Anti-Polymorphism Patch Prevent Windows scripts (.VBS, Java) from being able to read/write themselves, to avoid infections by advanced worms. Info can be found
here.
AnalogX Script Defender Intercept requests to execute most common scripting types, configure it to intercept new script extensions.
For me, the best one!ScriptSentry Alerts if a script might harm your system; prevents against malicious scripts in ShellScrap/HTA files. Specify which scripts should be allowed to run yourself.
Does not work well in my system...If you want, you can add the following extensions on your Stardard Shield settings: .VBS,.VBE,.JS,.JSE,.HTA,.WSF,.WSH,.SHS,.SHB
Although, it's not the same as the Script Blocker. The script blocker scans scripts executed by your browser on HTML pages. Generally, these scripts should be run in a "safe environment" and should not be allowed to get outside and infect your computer. However, some browsers (you know which ones I mean) contain bugs - and some viruses exploit them - such as VBS:RedLog for example. If you have an older version of IE without the necessary patches, viewing an infected HTML page will infected your computer. With the Script Blocker, the infection is avoided. You may even add HTM* to the list of extensions... but still, it will not emulate the behavior of the Script Blocker. The provider (Standard Shield in this case) will scan the files when loaded from disk - however, if the infected files will be loaded and executed directly from web, they will not be scanned - that's what the Script Blocker is for.