Call a function only once
<p>I've 3 divs (<code>#Mask #Intro #Container</code>) so if you click on Mask, Intro gets hidden and Container appears.
The problem is that I just want to load this only one time, not every time I refresh the page or anytime I click on the menu or a link, etc.</p>

<p>How can I do this?</p>

<p>This is the script I'm using for now:</p>

<pre><code>$(document).ready(function(){
    $("div#mask").click(function() {
        $("div#intro").fadeToggle('slow');
        $("div#container").fadeToggle('slow');
        $("div#mask").css("z-index", "-99");
    });
});
</code></pre>

<p>Thank you!</p>
