Typography mess-up

Hi, I have a problem with Gavick typography on Sporter. Everything is fine and stylish nice in one article until is used some plugin...

For example I would like to set a few tabbed articles or use page-break but when I put code for tabbed article or when I insert pagebreak... I got this in attachment (that is problem with page-break, but erorr is same with tabbed article). Everything is just messed up with "<div class="gk_number1">"... I opened page in Opera, IE, Firefox and erorr is always here. And yes, this article was created in k2 component.

ScreenShot014.jpg

Is just impossible to "mix" plugin with this typography or is there some solution? Thanks in advance for every attempt...