I have server software running for templates.
When the user has finished editing the template they click a button that takes them to a proof page.
The button uses javascript and what I need is for a loader gif to appear while the server is thinking about loading the next page as some of the templates are quite large and can take a few seconds before it does anything and I need to let the user know something is happening.
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The page also uses prototype-1.6.0.3 and scriptaculos