$(function () {
    $("#searchkey").click(function () {

        if ($.trim($("#searchinput").val()) == '请输入产品关键字' || $.trim($("#searchinput").val()).length == 0) {
            alert("请输入产品关键字");
            $("#searchinput").focus();
            return false;
        }
        else {
            window.location.href = "/search.shtml?keywords=" + escape($.trim($("#searchinput").val()));
        }
    })
    $("#searchinput").keydown(function (event) {

        if (event.keyCode == 13) {
            $("#searchkey").click();
        }
    })
});