Blocked from admin site – cookies that are blocked…(?)

Hello.

I need help.
I am blocked from my admin site.
I was just making some experiments with my sidebar and suddenly the page throw me out. And now I am not allowed to log in to my admin site… ??
And my pahe is not looking to great because of an experiment that have pushed my sidebar in the wrong direction. :-O
Whenever I try to log on I keep getting following message: “FEJL: WordPress skal bruge cookies, men din browser underst?tter dem ikke, eller ogs? bliver de blokeret.”
Translation: “Error: WordPress needs cookies, but your browser doesn’t support the cookies that it needs, or els the cookies gets blocked.”

Please help me.

/Q