The U.S. dollar was mixed against other major currencies in European trading Monday morning. Gold prices rose. The euro was quoted at US$1.5818, down from US$1.5839 late Friday in New York. Other dollar rates compared with late Friday: _99.35 Japanese yen, down from 100.00 _0.9922 Swiss francs, down from 0.9977 _1.0207 Canadian dollars, up from 1.0191 The British pound was quoted at US$1.9876, down from US$1.9916. Gold traded in London at US$937.25 bid per troy ounce at midmorning, up from US$927.15 on Friday. In Zurich, gold traded at US$935.25 bid per troy ounce, up from US$925.75. Silver opened in London at US$17.79 bid per troy ounce, up from US$17.71, the Associated Press reported.