The answer given by learned Asghar Bhatti Sb is quite informative supported by relevant examples but in my opinion 'Bayan' is the initial 'statement' and the ‘examination’ comes after that which, when done by the lawyer of either the plaintiff or the defence for the very first time is termed as ‘Direct Examination’.
After this Direct Examination when the lawyer from the other party interrogates further for the purpose of strengthening the case by extracting more facts, it is called ‘Cross Examination’ or جرح Jarah – Col. Jirah

DIRECT EVIDENCE - Evidence that stands on its own to prove an alleged fact, such as testimony of a witness who says she saw a defendant pointing a gun at a victim during a robbery. Direct proof of a fact, such as testimony by a witness about what that witness personally saw or heard or did.


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Note added at 16 hrs (2006-03-24 22:33:54 GMT)
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As its name suggests, direct evidence relates immediately to the allegation being tested. If the direct evidence is true, the allegation is established. Direct evidence, on the other hand, is evidence of a fact based on a witness's personal knowledge or observation of that fact. An example of direct evidence would be the surveillance video of a person robbing a convenience store, or a witness who saw a person stealing a car. A person's guilt of a charged crime may be proven by direct evidence alone, if that evidence satisfies a jury beyond a reasonable doubt of the defendant's guilt regarding that crime.

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Note added at 16 hrs (2006-03-24 22:38:20 GMT)
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Cross Examination = jarah
During direct examination, you determine that cross-examination is necessary, conduct a quick damage assessment from the perspective of the jury--keeping clearly in focus that the jurors are the sole judges of factual disputes, the credibility of the witnesses, and the amount of damages to be awarded. Approach cross-examination with three principle goals: to prejudice the opponent's case, to bolster your case, and to predicate your summation.

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Note added at 1 day9 hrs (2006-03-25 15:25:09 GMT)
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Direct examination is the other name of examination -in-chief, in which you set forth your case, before a court of law,followed by cross-examination, an american concept / name.
Direct examination (also called examination in chief) is the questioning of a witness by the party who called him or her, in a trial in a court of law. Direct examination is usually performed to elicit evidence in support of facts which will satisfy a required element of a party's claim or defense.

In direct examination, one is generally prohibited from asking leading questions. This prevents a lawyer from feeding answers to a favorable witness. An exception to this rule occurs if one side has called a witness, but it is either understood, or soon becomes plain, that the witness is hostile to the questioner's side of the controversy. The lawyer may then ask the court to declare the person he or she has called to the stand a hostile witness. If the court does so, the lawyer may thereafter ply the witness with leading questions during direct examination.

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Note added at 1 day9 hrs (2006-03-25 15:29:48 GMT)
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In law, cross-examination is the interrogation of a witness called by one's opponent. It is preceded by direct examination and may be followed by a redirect.

In the United States, the cross-examining attorney is typically not permitted to ask questions which do not pertain to the facts revealed in direct examination. This is called going beyond the scope of the direct examination. Unlike in direct examinations, however, leading questions are typically permitted in a cross-examination, since the witness is presumed to be sympathetic to the opposing side.