自动生成A~Z的按字母查询可以用到（不用一一去写A.B.C……Z）

                      <div class="floor_a clearfix">             
                        <script language="javascript" type="text/javascript">
                                 for (var i = 65; i < 91; i++) {
                                   if (i == 90)
                                      document.write("<a href='#' id='letter" + i + "'>" + String.fromCharCode(i) + "</a> ");
                                    else
                                      document.write("<a href='#' id='letter" + i + "'>" + String.fromCharCode(i) + "</a> | ");
                                    }
                         </script> 
                            </div>