As early publicity ramps up for the release of next year�s Batman movie �The Dark Knight' Warner Bros have released an ad campaign that reveals for the first time what Heath Ledger will look like as the Joker.

Initially the studio set up a website at ibelieveinharveydent.warnerbros.com, promoting a political campaign for the character of Harvey Dent (who becomes Batman villain, Two Face.)

Now the studio has set up another site here, which features a defaced version of the ad and invites readers to enter their email.

Once the email had been received, an image slowly appears once they return to the site - that of Heath Ledger as the Joker.

In the photo, his face is white, and scarring either side of his mouth has been painted red to portray a ghoulish smile.

The site appears to be down at present (no doubt due to overuse by joyous bat-fans), but the image has found its way onto almost every movie website.