How to close jquery dialog upon form data upload completion

My form is posting text and files(images), this all works in the backend and I have no problems with this. Its posting to itself. (php)

I have created a jquery dialog that opens as the submit button is clicked. This shows that the files are uploading.

How can I close the dialogue upon errors or once the files/data have been uploaded?

  $(document).ready(function() {
    $("#dialog").dialog({width: 400,autoOpen: false,hide: 'fade', show: 'fade', position: 'center', modal: 'true', closeOnEscape: true}); 
    $("#go").click(function() {
      $("#dialog").dialog('open')
    });
    $("#hide").click(function() {
      $开发者_运维知识库("#dialog").dialog('close')
    });
  });

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I think that it will be complete when the $(body).load() event is fired, but I'm not 100% on that