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copied!<p>Personally I'd use a session variable and not a cookie.</p> <p>Something like this should work:</p> <pre><code><?php session_start(); // add to the top of your page if (!isset($_SESSION['dark_theme'])) { $_SESSION['dark_theme']==false; } if ($_GET['changetheme']!='') { if ($_GET['changetheme']=='dark') { $_SESSION['dark_theme']=true; } else { $_SESSION['dark_theme']=false; } } ?> </code></pre> <p>This bit, place where you want the link:</p> <pre><code><?php if(!$_SESSION['dark_theme']){ ?> <a href="?changetheme=dark" id="darken">Make it Dark</a> <? }else{ ?> <a href="?changetheme=light" id="lighten">Make it Light</a> <? } ?> </code></pre> <p>Or do it using CSS+JavaScript:</p> <p>The HTML:</p> <pre><code><a href="#" id="darken">Make it Dark</a> <a href="#" id="lighten">Make it Light</a> </code></pre> <p>The CSS:</p> <p>In your "dark" stylesheet:</p> <pre><code>#darken { display:none; } </code></pre> <p>In your "light" stylesheet:</p> <pre><code>#lighten { display:none; } </code></pre> <p>JavaScript (note, I'm using JQuery as it's much easier to write than normal JS - just you'll need to include JQuery if it's not already on the site):</p> <pre><code>(function($, undefined) { $('#darken').click(function() { $(this).preventDefault(); // stops the link from functioning as a link chooseStyle('none', 60); //call your change stylesheet function $('#darken').hide(); //hide the dark link $('#lighten').show(); // show the light link }) $('#lighten').click(function() { $(this).preventDefault(); // stops the link from functioning as a link chooseStyle('none', 60); //call your change stylesheet function $('#lighten').hide(); //hide the light link $('#darken').show(); // show the dark link }) })(jQuery); </code></pre>

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