JavaScript not working in Firefox

Question

I have put a snippet of JavaScript into a Script Editor Web Part. It's function is to display an alert box and redirect the page after an Infopath form submission. I got it from this website and modified it.

https://askmanisha.wordpress.com/2013/08/20/redirection-to-a-page-on-infopath-form-closure-inside-an-infopath-form-web-part/

    <script>
 function pagecontainerload()
 {
  setTimeout(setEventHandler,5000);
 }

 function setEventHandler()
 {
  var btnSend = document.getElementById("ButtonID");

  btnSend.onmouseup = function(){Button.OnClick(this, event); alert("Your request has been successfuly submitted.");      window.location='website.com';};
 }
 </script>

The script works fine in Chrome and IE, but not in Firefox.

Any suggestions?

Answer 1

The problem was in the event being undefined. IE and Chrome are okay with it, but FF doesn't like it. In the last line, the code should be function(event){Button.OnClick(this, event)

Answer 2

May be something: under IE, getElementById looks for elements by ID and by name, while under FF, it's only by ID. Are you sure your ButtonID element has its ID set to ButtonID and not only its name?

If the name attribute has to be used, you may call getElementsByName instead (mind it may return more than one element).