如何使用jquery将ctrl+enter绑定到ajax表单提交

The following code will submit an ajax form when the user hits ctrl+enter while in the feedback input area. It works fine - but only once. I need to bind this function to the comment form so it persists and allows multiple submissions. In other words - the form is cleared and represented to the user after each submission. However, the following code only works for the first submission and thus ctrl+enter doesn't work for the second submission.The following code will submit an ajax form whe