Dark Knight flies high at US box office

'The Dark Knight' continues to break US box-office records, earning $26m (€17.3m) in its fourth week of release.

The 'Batman Begins' sequel has now earned over $441.5m (€294m) in America alone - making it the third top-grossing film of all time.

In its first week at the box-office, Seth Rogen and James Franco's 'Pineapple Express' came in at number two, taking in $22.4m (€15m).

Falling from second place to number three is Brendan Fraser adventure film 'The Mummy: Tomb of the Dragon Emperor' with $16.1m (€10.7m).

Rounding out the top five is newcomer 'The Sisterhood of the Traveling Pants 2', bringing in nearly $10.8 (€7.1m) at number four, and Will Ferrell's new comedy with John C. Reilly, 'Step Brothers', at number five - which took in an additional $8.9m (€5.9m) in its third week of release.