RegExp strange behaviour

Hello everyone.

Maybe I am wrong in the basics of RegExp but, everything mentioned below works perfectly under php's eregi.

The task is quite simple, I need to replace [b] & [/b] like tags into <b> & </b>

re2 = new RegExp('\[b\]', "gi");

text=text.replace(re2,"<b>");

This doesn't work. [ & ] just doesn't disappear from the text. It looks like shielding doesn't work and JS thinks that i'm trying to use



var re2 = new RegExp('[b]', "gi").

But more interesting that

var re2 = new RegExp('\x5Bb\x5D', "gi");

text=text.replace(re2,"<b>");

(and lots of variants i've tried)

Doesn't work too. I still got [ & ] in the text;



2 days of googling did't bring the answer, so I believe you can help me.