Guille San wrote:
> Hi
> I only have one question more. How can I do this example with prototype:
> 
> Example in jQuery
> -------------------
> $(document).ready(function() {
>   $('#my_element').hide();
> });

I wish Prototype had this built-in. However, it's pretty easy to add the 
onDOMReady extension script and then use the following:

Event.onDOMReady(function() {
  $('my_element').hide();
});

You can find that extension script here:
http://smoothoperatah.com/files/onDOMReady.js

Otherwise, you can also just wait for the whole page to load with 
something like:
Event.observe(window, "load", function() {
  $('my_element').hide();
});

I prefer using the onDOMReady extension because it's designed to wait 
only for the DOM itself to load and not the entire page, and does so 
with cross browser support.
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