[VE][108] Link do not have "target" attribute?

*Validating http://simek.hejnet.pl/portfolio/
Error [108]: "there is no attribute X"
*


*Hello,*

I've got error that "target" attribute isn't a valid A tag attribute? Hot
it's possible?

Code for this link:
*<a href="http://simekonelove.deviantart.com/" **target="_blank"**
>SimekOneLove</a>*

I've use also many other links like:
*<a href="http://simek.digart.pl/" target="_blank">Simek</a>*
or
*<a href="http://www.facebook.com/profile.php?id=000"
target="_blank">000</a>*

And there are no validation errors, so what happened?

*Greetings*
Bartosz "Simek" Kaszubowski
http://simekdesign.eu || http://mahali.pl