Hello B2 Devs

Get now for a long time a crazy error in my blog where i can not find the Problem.
It shows up on top off Each blog the Line

document.open() document.write(' ') document.close()

Ther must be a code error or mistake i have done while i mod th eblog
But after all i dont find the wrong part witch produce thise line
You can see the error on
http://blog.cameraman.at

If you have any idea it would help me not to have headage all time .
thanks a lot
Mohab