为什么jQuery“切换”？按钮触发表单上的“提交”按钮？

我构建了一个相当复杂的表单，其中包含一个隐藏部分，用户可以切换打开该部分以便在必要时输入更多信息。但是，当您点击标有我有更多本地性的此切换按钮时，它会触发提交按钮并过早提交表单。

I have built a fairly complex form which includes a hidden section that the user can toggle open for entering more information if necessary. However, when you click on this toggle button labeled I have more Nativities, it triggers the submit button and prematurely submits the form.

表单现在是开发人员，但可以在这里找到它。

The form is in dev right now, but it can be found here.

我用于切换按钮的代码是：

The code I am using for the toggle button is:

<script type="text/javascript">
    $(function() {
        $("#schedule").accordion({ header: "h5", collapsible: true });
        $("#more-nativities").hide();
        $("#toggle").click(function()   {
            $("#more-nativities").slideToggle("slow");
        });
    });
    </script>

提交按钮的代码非常基本：

The code for the submit button is pretty basic:

<input id="submit2" type="image" src="_images/btn_register.jpg" name="submit"  alt="" onmouseover="javascript:this.src='_images/btn_register2.jpg'" onmouseout="javascript:this.src='_images/btn_register.jpg'"/>

切换按钮的代码是：

<button id="toggle">I have more nativities</button>

关于为什么切换按钮触发提交的任何想法？更重要的是如何解决问题？

Any ideas as to why the toggle button is triggering the submit? And more importantly how to solve the problem?

谢谢！