我正在通过“立即付款”按钮制作发票付款单。但是在设计了按钮代码之后，它没有显示付款选项，保持黑色覆盖，加载按钮显示。以下是完整的代码：

<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.3/jquery.min.js"></script>
<script type="text/javascript">
    function myFunction_eway() {
        var checkBox = document.getElementById("check_box_btn");

         if (checkBox.checked == true){

          } else {
              alert('Please Accept credit card fee');
          }
          var us_amount = $(".us_amount").val();
          var us_phone = $(".us_phone").val();
          var us_name = $(".us_name").val();
          var us_organization = $(".us_organization").val();
          var us_email = $(".us_email").val();
          var us_invoice = $(".us_invoice").val();
          var invoicedescription='Name: '+us_name+', Organization: '+us_organization;
          var discount='1.90';
          var amnt_gst_cal= (us_amount * discount / 100).toFixed(2);
          var us_amount1=parseFloat(amnt_gst_cal, 10) + parseFloat(us_amount, 10);
          var us_amount2=us_amount1*100;
          var get_btn_txt =  $('.eway-button span').text();
          $('.eway-button span').text("Pay Now");
          window.onload = setTimeout(
              function(){
                  $('.after_click_hide').hide();
                  $('div#product').hide();
                  $("div#product").css("display", "none!important");
                  $(".after_click_hide").css("display", "none");
                  $(".after_click_show").css("display", "block");
                  $('script.eway-paynow-button').attr('data-amount', us_amount2);
                  $('script.eway-paynow-button').attr('data-phone', us_phone);
                  $('script.eway-paynow-button').attr('data-invoiceref', us_invoice);
                  $('script.eway-paynow-button').attr('data-invoicedescription', invoicedescription);
                  $('script.eway-paynow-button').attr('data-email', us_email);
                 }, 200);
          e.preventDefault();
        return false;
     }
</script>

<style>
    label {
        cursor: pointer;
        display: inline-block;
        padding: 10px 0px;
        text-align: left;
        width: 250px;
        vertical-align: top;
    }
    input {
        font-size: inherit;
    }
</style>
<style> 
    #product {
        border: 3px solid #000;
        display:none;
    }
    #modal-dialog dl.dl-horizontal {
        border: 1px solid #000!important;
    }
    .eway-button span {
        width: 130px !important;
    }
</style>

<a style="font-family:avenir;"></a>
<div id="secondlist">
    <form action="?" method="POST" id="payment-form" >
      <div class="form-row">
        Name: <input type="text" style="font-family:avenir;" size="29.5" name="name" class="us_name" required="required" placeholder="First and Last Name" />
      </div>
       <div class="form-row">
        Organization: <input type="text" style="font-family:avenir;" size="29.5" name="organization" class="us_organization" required="required" placeholder="Organization" />
      </div>
      <div class="form-row">
        Email: <input type="email" style="font-family:avenir;" size="29.5" name="email" class="us_email" required="required" placeholder="name@youremail.com" />
      </div> 
      <div class="form-row">
        Phone: <input type="text" style="font-family:avenir;" size="29.5" name="phone" class="us_phone" required="required" onkeypress="return event.charCode >= 48 && event.charCode <= 57"  placeholder="Phone" />
      </div>
      <div class="form-row">
        Invoice Number: 
        <input type="text" size="14" style="font-family:avenir;" id="invoice" class="us_invoice" name="invoice" placeholder="Invoice #" required="required" />
      </div>
      <div class="form-row">
        Invoice Total $ (inc GST)
        <input type="text" size="14" style="font-family:avenir;" class="us_amount" name="amount" id="amount" required="required" placeholder="$0.00 aud" />
      </div>
      <div class="form-row">
        <span>
           Confirm
             <span style="margin-right: 10px;margin-top: 11px;">
                 <input type="checkbox" name="checkbox" value="1" class="check_box_btn" id="check_box_btn" required="required" />
                 <span style="margin-left:6px;">I understand a 1.90% credit card fee will be automatically added to this total</span>
            </span>
        </span>
      </div>
     <div class="form-row submit_b_t_n">
         <br>
          <button type="button" style="background-color:#485787;color:white;width:150px;height:40px;" class="right after_click_hide" onclick="return myFunction_eway();">Submit Payment</button>
     </div>
    </form>
</div>
<div></div>

<div class="after_click_show" style="display:none">
    <script src="https://secure.ewaypayments.com/scripts/eCrypt.min.js"
      class="eway-paynow-button"
      data-publicapikey=""
      data-amount=""
      data-currency="AUD"
      data-email=""
      data-invoiceref=""
      data-invoicedescription=""
      data-phone=""
      data-label="Pay Now"
      data-allowedit="true"
      data-submitform="yes"
      data-resulturl="">
    </script> 
</div>

谁能告诉我什么是错误或者我如何解决这个问题？同时，我尝试只加载自定义电子邮件发送的基本代码，但发现了相同的结果。
谢谢