function change_image(img) {
    var src = img.attr("orig");
    if (src == undefined) {
      src = img.attr("src");
    }
    var fname = src.split(".");
    img.attr("src", fname[0] + "_over" + "." + fname[1]);
    img.attr("orig", src);
  }
  
  function unset_image(img) {
    var orig = img.attr("orig");
    if (orig != undefined) {
      img.attr("src", orig);
      img.removeAttr("orig");
    }
  }
  
  $(document).ready(function() {
    $('#nav-one').clickMenu();
    $("li.main").hover(
      function() {
        var img = $(this).children("img");
        change_image(img);
      },
      function() {
        var img = $(this).children("img");
        unset_image(img);
      }
    );
    
    $(".tab").each(
      function() {
        var img = $(this).children("img");
        if ($(this).attr("click") == "true") {
          change_image(img);
        }
      }
    );
    $(".go").click(
      function() { 
        var sele = $("#" + $(this).attr("to"));
        window.open(sele.val());
      }
    );
    $("#menu").css("display", "block");
  });


  function deleteCue(form) {
    if (form.query.value == "請輸入關鍵字或證券代碼") {
      form.query.value = ""
    }
    form.query.focus()
  }
  
  $(document).ready(function() {
    $(".channel select").change(
      function() { 
        var opt = $(this).children("option").get($(this).attr("selectedIndex"));
        window.open(opt.value);
      }
    );
  });