Official: Obama going to Copenhagen climate summit   Weekly jobless claims drop below 500,000   Taliban chief rules out negotiations with Karzai, Western powers+   Gov't panel sets specifics of rescue measures on lost pension fiasco+   Official: Obama going to Copenhagen climate summit   White House official says Obama will attend next month's global climate summit in Copenhagen.   Yen's rise is due to dollar's weakness: Fujii+   Prisoner deal hits snag on Hamas demands   Toyota to replace 4M gas pedals that could jam   Rare, heavy rains soak pilgrims at Islam's hajj   Toyota to replace 4 gas pedals that could jam   Par Pharmaceutical Announces Results of Its 'Modified Dutch Auction' Tender Offer   LEAD: Diet returns to normal, flu measure to pass lower house on Thurs.+   Israel offers 10-month West Bank settlement freeze   American Diversified Holdings Corporation Announces New Website   Rare, heavy rains soak pilgrims in Islam's hajj   Gov't plan to cut tech budget sparks criticism from scientists+   Netanyahu office says Israel to propose 10-month freeze on West Bank settlement construction.   Gay marriage momentum stalls in liberal NY, NJ   Lou Dobbs weighs Senate run in New Jersey