<script>//搜索功能

      var oldKey0 = "";

      var index0 = -1;var oldCount0 = 0;

      var newflag = 0;

      var currentLength = 0;

      function wordSearch(flg) {

          var key = $("#key").val(); //取key值

          if (!key) {

              return; //key为空则退出

          }

          getArray();

          focusNext(flg);

      }

      function focusNext(flg) {

          if (newflag == 0) {//如果新搜索,index清零

              index0 = 0;

          }

          if (!flg) {

              if (oldCount0 != 0) {//如果还有搜索

                  if (index0 < oldCount0) {//左边如果没走完，走左边

                      focusMove(index0);

                      index0++;

                  } else if (index0 == oldCount0) {//都走完了

                      index0 = 0;

                      focusMove(index0);

                      index0++;

                  }

                  else {

                      index0 = 0;//没确定

                      focusMove(index0);

                      index0++;

                  }

              }

          } else {

              if (oldCount0 != 0) {//如果还有搜索

                  if (index0 <= oldCount0 && index0 > 0) {//左边如果没走完，走左边

                      index0--;

                      focusMove(index0);

                  } else if (index0 == 0) {//都走完了

                      index0 = oldCount0;

                      index0--

                      focusMove(index0);

                  }

              }

          }

      }

      function getArray() {

          newflag = 1;

          $(".contrast .result").removeClass("res");

          var key = $("#key").val(); //取key值

          if (!key) {

              oldKey0 = "";

              return; //key为空则退出

          }

          if (oldKey0 != key || $(".current").length != currentLength) {

              //重置

              index0 = 0;

              var index = 0;

              $(".contrast .result").each(function () {

                  $(this).replaceWith($(this).html());

              });

              pos0 = new Array();

              if ($(".contrast-wrap").hasClass("current")) {

                  currentLength = $(".current").length;

                  $(".current .contrast").each(function () {

                      $(this).html($(this).html().replace(new RegExp(key, "gm"), "<span id='result" + (index++) + "' class='result'>" + key + "</span>")); // 替换

                  });

              } else {

                  $(".contrast-wrap").addClass('current');

                  currentLength = $(".current").length;

                  $(".contrast").each(function () {

                      $(this).html($(this).html().replace(new RegExp(key, "gm"), "<span id='result" + (index++) + "' class='result'>" + key + "</span>")); // 替换

                  });

              }

              //$("#key").val(key);

              oldKey0 = key;

              //$(".contrast .result").each(function () {

              //    $(this).parents('.contrast-wrap').addClass('current');

              //    pos0.push($(this).offset().top);

              //});

              // pos0.push($(".contrast .result:eq(2)").offset().top - $(".contrast .result:eq(2)").parents(".contrast").offset().top);

              oldCount0 = $(".contrast .result").length;

              newflag = 0;

          }

      }

      function focusMove(index0) {

          $(".contrast .result:eq(" + index0 + ")").parents('.contrast-wrap').addClass('current');

          $(".contrast .result:eq(" + index0 + ")").addClass("res");

          var top = $(".contrast .result:eq(" + index0 + ")").offset().top + $(".contrast .result:eq(" + index0 + ")").parents(".contrast").scrollTop();

          var intop = top - $(".contrast .result:eq(" + index0 + ")").parents(".contrast").offset().top;

          $(".contrast .result:eq(" + index0 + ")").parents(".contrast").animate({ scrollTop: intop }, 200);

          if ($(".contrast .result:eq(" + index0 + ")").parents(".contrast").scrollTop() == 0) {

              $("html, body").animate({ scrollTop: top - 200 }, 200);

          } else {

              $("html, body").animate({ scrollTop: $(".contrast .result:eq(" + index0 + ")").parents(".contrast").offset().top - 200 }, 200);

          }

      }

      $('#key').change(function () {

          if ($('#key').val() == "") {

              index0 = 0;

              $(".contrast .result").each(function () {

                  $(this).replaceWith($(this).html());

              });

              oldKey0 = "";

          }

      });

  </script>