JavaScript code is executed client-side, so it will have no bearing whatsoever on the host you are using.
However in order for the client to receive the JavaScript code in order to execute it, you have to have the relevant code in the correct place on the server, as defined by your HTML.
Code:
<script src="../assets/js/swapimage.js" type="text/JavaScript" language="JavaScript"></script>
<script src="../assets/js/swapimagerestore.js" type="text/JavaScript" language="JavaScript"></script>
<script src="../assets/js/preloadimages.js" type="text/JavaScript" language="JavaScript"></script>
<script src="../assets/js/showHideLayers.js" type="text/JavaScript" language="JavaScript"></script>
<script src="../assets/js/findobject.js" type="text/JavaScript" language="JavaScript"></script>
<script src="../assets/js/jumpMenu.js" type="text/JavaScript" language="JavaScript"></script>
Make sure all these files, and most likely the last one, are where they should be.