function cutstr(str, len) {      var temp,          icount = 0,          patrn = /[^\x00-\xff]/，          strre = "";      for (var i = 0; i < str.length; i++) {          if (icount < len - 1) {              temp = str.substr(i, 1);                  if (patrn.exec(temp) == null) {                     icount = icount + 1              } else {                  icount = icount + 2              }              strre += temp              } else {              break;          }      }      return strre + "..."  }