NEW YORK (TheStreet) -- "Don't be fooled by the 'better-than-expected' game," Jim Cramer told the viewers of his "Mad Money" TV show Friday.

He said when it comes to judging a company's earnings report, the game is much more complex than most people realize.

Cramer said there are six key companies reporting their earnings next week. They include Target (TGT Quote), Gap Stores (GPS Quote) and TJX Stores (TJX Quote) in retail, and Salesforce.com (CRM Quote), NetApp (NTAP Quote) and most notably, Dell (DELL Quote), in technology.