can not send new post

I do not know when I want send this post

after I press submit new thread

I see another page with this error

Bad Request

Your browser sent a request that this server could not understand.
Apache/2.2.x (FreeBSD) Server at Port 80

and I see 400 bad Request

but I send this post in

where I make mistake ?
try adding those
 snippets as attachments. I think that you have triggered some web server restrictions with those strings...
mod_security detect this as some kind of information 'leekage' or xss attack and block it
I try add code as attachemnts but still I see that error and I can not send this post
Well, then just put them somewhere on the internet and provide URLs :)
I cannot help you more with this, sorry.