The HTML content of this string is shown in a tab title while remote content is loading. Pass in empty string to deactivate that behavior. An span element must be present in the A tag of the title, for the spinner content to be visible.

 

Sorry, but can anybody explain me and/or give me a code example of the part underlined ???

I have this:

1. <li><a href="./myScript.php">My Tab Label</a><span></span></li>

and try this also:

1. <li><span><a href="./myScript.php">My Tab Label</a></span></li>

But it doesn't do anything 

Thank you very much