1 EXHIBIT 24 CONSENT OF INDEPENDENT PUBLIC ACCOUNTANTS As independent public accountants, we hereby consent to the incorporation of our reports included in this Form 10-K, into the Company's previously filed Registration Statement File Nos. 33-53274, 33-63681, 33-65445, 333-00269 and 333-73407. ARTHUR ANDERSEN LLP Philadelphia, Pennsylvania March 28, 2001