Bankrupt electronics retailer RadioShack got court approval on Monday to borrow $10 million to support its operations until it opens the bidding this month for its best-performing stores.br RadioShack, which filed for Chapter 11 bankruptcy last week, has an initial deal to sell as many as 2,400 of its 4,100 stores to an affiliate of hedge fund Standard General, one of the lenders and its largest shareholder. But that agreement is subject to higher bids.